JavaScript to generate the questions using random numbers using Select operators randomly(+,*,-) for each...

I want to do this math game that generates numbers and operators randomly.

This is hint - x = Math.floor(Math.random()*101); will generate a random number between 0 and 100. Select operators randomly (+,*,-) for each equation. Please any one can help me.

var arr = 

while(arr.length < 8){

    var r = Math.floor(Math.random()*100) + 1;

    if(arr.indexOf(r) === -1) arr.push(r);

}

document.write(arr);

edited Nov 27 '18 at 3:29

Yong Quan

2,7382927

asked Nov 27 '18 at 3:12

siaylum

StackOverflow is not a code-writing service. Please read through the Help Center, in particular How do I ask a good question? If you run into a specific problem, research it thoroughly, search thoroughly here, and if you're still stuck post your code and a description of the problem. Also, remember to include Minimum, Complete, Verifiable Example. People will be glad to help

– Andreas
Nov 27 '18 at 3:13

var arr = while(arr.length < 8){ var r = Math.floor(Math.random()*100) + 1; if(arr.indexOf(r) === -1) arr.push(r); } document.write(arr); I wrote like this code for take random numbers. this is working properly. Now, I need to add math operations for that. How I can do that.@Andreas

– siaylum
Nov 27 '18 at 3:18

ok, edited. @Andreas.

– siaylum
Nov 27 '18 at 3:22

add a comment |

I want to do this math game that generates numbers and operators randomly.

This is hint - x = Math.floor(Math.random()*101); will generate a random number between 0 and 100. Select operators randomly (+,*,-) for each equation. Please any one can help me.

var arr = 

while(arr.length < 8){

    var r = Math.floor(Math.random()*100) + 1;

    if(arr.indexOf(r) === -1) arr.push(r);

}

document.write(arr);

edited Nov 27 '18 at 3:29

Yong Quan

2,7382927

asked Nov 27 '18 at 3:12

siaylum

StackOverflow is not a code-writing service. Please read through the Help Center, in particular How do I ask a good question? If you run into a specific problem, research it thoroughly, search thoroughly here, and if you're still stuck post your code and a description of the problem. Also, remember to include Minimum, Complete, Verifiable Example. People will be glad to help

– Andreas
Nov 27 '18 at 3:13

var arr = while(arr.length < 8){ var r = Math.floor(Math.random()*100) + 1; if(arr.indexOf(r) === -1) arr.push(r); } document.write(arr); I wrote like this code for take random numbers. this is working properly. Now, I need to add math operations for that. How I can do that.@Andreas

– siaylum
Nov 27 '18 at 3:18

ok, edited. @Andreas.

– siaylum
Nov 27 '18 at 3:22

add a comment |

I want to do this math game that generates numbers and operators randomly.

This is hint - x = Math.floor(Math.random()*101); will generate a random number between 0 and 100. Select operators randomly (+,*,-) for each equation. Please any one can help me.

var arr = 

while(arr.length < 8){

    var r = Math.floor(Math.random()*100) + 1;

    if(arr.indexOf(r) === -1) arr.push(r);

}

document.write(arr);

edited Nov 27 '18 at 3:29

Yong Quan

2,7382927

asked Nov 27 '18 at 3:12

siaylum

I want to do this math game that generates numbers and operators randomly.

This is hint - x = Math.floor(Math.random()*101); will generate a random number between 0 and 100. Select operators randomly (+,*,-) for each equation. Please any one can help me.

var arr = 

while(arr.length < 8){

    var r = Math.floor(Math.random()*100) + 1;

    if(arr.indexOf(r) === -1) arr.push(r);

}

document.write(arr);

var arr = 

while(arr.length < 8){

    var r = Math.floor(Math.random()*100) + 1;

    if(arr.indexOf(r) === -1) arr.push(r);

}

document.write(arr);

var arr = 

while(arr.length < 8){

    var r = Math.floor(Math.random()*100) + 1;

    if(arr.indexOf(r) === -1) arr.push(r);

}

document.write(arr);

javascript

edited Nov 27 '18 at 3:29

Yong Quan

2,7382927

asked Nov 27 '18 at 3:12

siaylum

edited Nov 27 '18 at 3:29

Yong Quan

2,7382927

asked Nov 27 '18 at 3:12

siaylum

edited Nov 27 '18 at 3:29

Yong Quan

2,7382927

edited Nov 27 '18 at 3:29

Yong Quan

2,7382927

edited Nov 27 '18 at 3:29

Yong Quan

2,7382927

asked Nov 27 '18 at 3:12

siaylum

asked Nov 27 '18 at 3:12

siaylum

asked Nov 27 '18 at 3:12

siaylum

StackOverflow is not a code-writing service. Please read through the Help Center, in particular How do I ask a good question? If you run into a specific problem, research it thoroughly, search thoroughly here, and if you're still stuck post your code and a description of the problem. Also, remember to include Minimum, Complete, Verifiable Example. People will be glad to help

– Andreas
Nov 27 '18 at 3:13

var arr = while(arr.length < 8){ var r = Math.floor(Math.random()*100) + 1; if(arr.indexOf(r) === -1) arr.push(r); } document.write(arr); I wrote like this code for take random numbers. this is working properly. Now, I need to add math operations for that. How I can do that.@Andreas

– siaylum
Nov 27 '18 at 3:18

ok, edited. @Andreas.

– siaylum
Nov 27 '18 at 3:22

add a comment |

StackOverflow is not a code-writing service. Please read through the Help Center, in particular How do I ask a good question? If you run into a specific problem, research it thoroughly, search thoroughly here, and if you're still stuck post your code and a description of the problem. Also, remember to include Minimum, Complete, Verifiable Example. People will be glad to help

– Andreas
Nov 27 '18 at 3:13

var arr = while(arr.length < 8){ var r = Math.floor(Math.random()*100) + 1; if(arr.indexOf(r) === -1) arr.push(r); } document.write(arr); I wrote like this code for take random numbers. this is working properly. Now, I need to add math operations for that. How I can do that.@Andreas

– siaylum
Nov 27 '18 at 3:18

ok, edited. @Andreas.

– siaylum
Nov 27 '18 at 3:22

StackOverflow is not a code-writing service. Please read through the Help Center, in particular How do I ask a good question? If you run into a specific problem, research it thoroughly, search thoroughly here, and if you're still stuck post your code and a description of the problem. Also, remember to include Minimum, Complete, Verifiable Example. People will be glad to help

– Andreas
Nov 27 '18 at 3:13

var arr =  while(arr.length < 8){     var r = Math.floor(Math.random()*100) + 1;     if(arr.indexOf(r) === -1) arr.push(r); } document.write(arr);

I wrote like this code for take random numbers. this is working properly. Now, I need to add math operations for that. How I can do that.@Andreas

– siaylum
Nov 27 '18 at 3:18

var arr =  while(arr.length < 8){     var r = Math.floor(Math.random()*100) + 1;     if(arr.indexOf(r) === -1) arr.push(r); } document.write(arr);

I wrote like this code for take random numbers. this is working properly. Now, I need to add math operations for that. How I can do that.@Andreas

– siaylum
Nov 27 '18 at 3:18

ok, edited. @Andreas.

– siaylum
Nov 27 '18 at 3:22

add a comment |

3 Answers
3

active

oldest

votes

Here's an ES6 implementation of that, I used console.log instead of document.write

let questionsCount = 10;



function generateQuestions() {

    let questions = ; 



    for(let i = 0;i < questionsCount;i++) {

      let n1 = Math.floor(Math.random() * 101);

      let n2 = Math.floor(Math.random() * 101);

      let operatorObj = randomOperator(n1,n2)

      questions.push({

         question: `${n1} ${operatorObj.operator} ${n2} ?`,

         answer: operatorObj.answer

      });

    }



    return questions;

}









 function randomOperator(n1,n2) {

    let n = Math.floor(Math.random() * 4);

    switch (n) {

       case 0: 

         return {operator: '+', answer: n1 + n2};

       case 1:

         return {operator: '-', answer: n1 - n2}

       case 2:

         return {operator: '*', answer: n1 * n2}

       case 3:

         return {operator: '/', answer: n1 / n2}

    }

 }



let questions = generateQuestions();



let answers = questions.map((question) => 

     prompt(question.question));



answers.forEach((answer,i) => {

    console.log(`${questions[i].question} ${answer} ${(answer == 

       questions[i].answer) ? 'Correct': `Wrong should be 

       ${questions[i].answer}`}`)

});

answered Nov 27 '18 at 3:53

onecompileman

4715

Thank you for your answer my friend, how to add 2 marks per correct answer).

– siaylum
Nov 27 '18 at 4:09

add a comment |

You can use switch-case statement to select the operator and use Math.random() to randomize it

var arr = 

while(arr.length < 8){

    var r = Math.floor(Math.random()*100) + 1;

    if(arr.indexOf(r) === -1) arr.push(r);

}



for (var i=0; i<4; i++) {

    operator = Math.floor(Math.random() * 3);

    switch(operator) {

        case 0:

            eval(prompt(arr[i*2] + " + " + arr[i*2+1]));

            break;

        case 1:

            eval(prompt(arr[i*2] + " - " + arr[i*2+1]));

            break;

        case 2:

            eval(prompt(arr[i*2] + " * " + arr[i*2+1]));

            break;

    }

}

edited Nov 27 '18 at 4:00

answered Nov 27 '18 at 3:29

Andreas

1,97931018

How to show this equation in prompt. I wrote like this, but this is not working properly. eval(prompt (" + "));

– siaylum
Nov 27 '18 at 3:57

Edited my answer to use eval(prompt())

– Andreas
Nov 27 '18 at 4:01

Thank you for your answer my friend, how to add 2 marks per correct answer)

– siaylum
Nov 27 '18 at 4:12

Please attempt that by yourself first

– Andreas
Nov 27 '18 at 4:13

add a comment |

Better solution: While it doesn't use prompts I'm sure you can figure that part out.

works best on codepen, and not very well inside the awkward snippet

feature that stack-overflow provides (due to the reset button triggering reload)

here's the code in case your interested:

//Solve the equation - math problem game



//change * 4 if you want more operators then add the

//operator as a string inside the operator array...

//you may also add duplicate operators to increase odds

//higher odds of harder operator = harder mode

var a = location;

function start() {

document.body.innerHTML = null;

var operators = ["/", "*", "-", "+"],

  arr = ,

  arrCompiled,

  i = 0, a = location;

while (arr.length < 8) {

  var r = Math.floor(Math.random() * 100) + 1;

  if (arr.indexOf(r) === -1) arr.push(r);

}

while(i < arr.length) {

  var oper = ' '+operators[Math.floor(Math.random() * 4)]+' ';

  if (i === 0) {

    arrCompiled = arr.toString()

.replace(/,/, oper);

  }

  

  arrCompiled = arrCompiled.replace(/,/, oper);

  i++;

}

document.write('<div id="questions">'+arrCompiled+' = ???</div>');

document.getElementById("questions").insertAdjacentHTML('afterend', '<button id="solve">Solve</button>');

}

start();



document.getElementById('solve').addEventListener('click', function() {

  if (document.getElementById('solve')) {

  var x = document.getElementById('questions').innerText.replace(/?/g, "");

  var y = x.replace(/[^0-9*/+-.()]+/g, "");

  var z = Math.round(eval(y) * 100) / 100;

  document.write(x + z + ' - solved <a href="javascript:a.reload();"><button>New Problem</button></a>');

  document.getElementById('questions').remove();

  }

});

answered Nov 27 '18 at 6:05

Techtiger255 Code Mode

4511

Thank you for the your answer my friend.

– siaylum
Nov 28 '18 at 2:27

add a comment |

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3 Answers
3

active

oldest

votes

3 Answers
3

active

oldest

votes

Here's an ES6 implementation of that, I used console.log instead of document.write

let questionsCount = 10;



function generateQuestions() {

    let questions = ; 



    for(let i = 0;i < questionsCount;i++) {

      let n1 = Math.floor(Math.random() * 101);

      let n2 = Math.floor(Math.random() * 101);

      let operatorObj = randomOperator(n1,n2)

      questions.push({

         question: `${n1} ${operatorObj.operator} ${n2} ?`,

         answer: operatorObj.answer

      });

    }



    return questions;

}









 function randomOperator(n1,n2) {

    let n = Math.floor(Math.random() * 4);

    switch (n) {

       case 0: 

         return {operator: '+', answer: n1 + n2};

       case 1:

         return {operator: '-', answer: n1 - n2}

       case 2:

         return {operator: '*', answer: n1 * n2}

       case 3:

         return {operator: '/', answer: n1 / n2}

    }

 }



let questions = generateQuestions();



let answers = questions.map((question) => 

     prompt(question.question));



answers.forEach((answer,i) => {

    console.log(`${questions[i].question} ${answer} ${(answer == 

       questions[i].answer) ? 'Correct': `Wrong should be 

       ${questions[i].answer}`}`)

});

answered Nov 27 '18 at 3:53

onecompileman

4715

Thank you for your answer my friend, how to add 2 marks per correct answer).

– siaylum
Nov 27 '18 at 4:09

add a comment |

Here's an ES6 implementation of that, I used console.log instead of document.write

let questionsCount = 10;



function generateQuestions() {

    let questions = ; 



    for(let i = 0;i < questionsCount;i++) {

      let n1 = Math.floor(Math.random() * 101);

      let n2 = Math.floor(Math.random() * 101);

      let operatorObj = randomOperator(n1,n2)

      questions.push({

         question: `${n1} ${operatorObj.operator} ${n2} ?`,

         answer: operatorObj.answer

      });

    }



    return questions;

}









 function randomOperator(n1,n2) {

    let n = Math.floor(Math.random() * 4);

    switch (n) {

       case 0: 

         return {operator: '+', answer: n1 + n2};

       case 1:

         return {operator: '-', answer: n1 - n2}

       case 2:

         return {operator: '*', answer: n1 * n2}

       case 3:

         return {operator: '/', answer: n1 / n2}

    }

 }



let questions = generateQuestions();



let answers = questions.map((question) => 

     prompt(question.question));



answers.forEach((answer,i) => {

    console.log(`${questions[i].question} ${answer} ${(answer == 

       questions[i].answer) ? 'Correct': `Wrong should be 

       ${questions[i].answer}`}`)

});

answered Nov 27 '18 at 3:53

onecompileman

4715

Thank you for your answer my friend, how to add 2 marks per correct answer).

– siaylum
Nov 27 '18 at 4:09

add a comment |

Here's an ES6 implementation of that, I used console.log instead of document.write

let questionsCount = 10;



function generateQuestions() {

    let questions = ; 



    for(let i = 0;i < questionsCount;i++) {

      let n1 = Math.floor(Math.random() * 101);

      let n2 = Math.floor(Math.random() * 101);

      let operatorObj = randomOperator(n1,n2)

      questions.push({

         question: `${n1} ${operatorObj.operator} ${n2} ?`,

         answer: operatorObj.answer

      });

    }



    return questions;

}









 function randomOperator(n1,n2) {

    let n = Math.floor(Math.random() * 4);

    switch (n) {

       case 0: 

         return {operator: '+', answer: n1 + n2};

       case 1:

         return {operator: '-', answer: n1 - n2}

       case 2:

         return {operator: '*', answer: n1 * n2}

       case 3:

         return {operator: '/', answer: n1 / n2}

    }

 }



let questions = generateQuestions();



let answers = questions.map((question) => 

     prompt(question.question));



answers.forEach((answer,i) => {

    console.log(`${questions[i].question} ${answer} ${(answer == 

       questions[i].answer) ? 'Correct': `Wrong should be 

       ${questions[i].answer}`}`)

});

answered Nov 27 '18 at 3:53

onecompileman

4715

Here's an ES6 implementation of that, I used console.log instead of document.write

let questionsCount = 10;



function generateQuestions() {

    let questions = ; 



    for(let i = 0;i < questionsCount;i++) {

      let n1 = Math.floor(Math.random() * 101);

      let n2 = Math.floor(Math.random() * 101);

      let operatorObj = randomOperator(n1,n2)

      questions.push({

         question: `${n1} ${operatorObj.operator} ${n2} ?`,

         answer: operatorObj.answer

      });

    }



    return questions;

}









 function randomOperator(n1,n2) {

    let n = Math.floor(Math.random() * 4);

    switch (n) {

       case 0: 

         return {operator: '+', answer: n1 + n2};

       case 1:

         return {operator: '-', answer: n1 - n2}

       case 2:

         return {operator: '*', answer: n1 * n2}

       case 3:

         return {operator: '/', answer: n1 / n2}

    }

 }



let questions = generateQuestions();



let answers = questions.map((question) => 

     prompt(question.question));



answers.forEach((answer,i) => {

    console.log(`${questions[i].question} ${answer} ${(answer == 

       questions[i].answer) ? 'Correct': `Wrong should be 

       ${questions[i].answer}`}`)

});

let questionsCount = 10;



function generateQuestions() {

    let questions = ; 



    for(let i = 0;i < questionsCount;i++) {

      let n1 = Math.floor(Math.random() * 101);

      let n2 = Math.floor(Math.random() * 101);

      let operatorObj = randomOperator(n1,n2)

      questions.push({

         question: `${n1} ${operatorObj.operator} ${n2} ?`,

         answer: operatorObj.answer

      });

    }



    return questions;

}









 function randomOperator(n1,n2) {

    let n = Math.floor(Math.random() * 4);

    switch (n) {

       case 0: 

         return {operator: '+', answer: n1 + n2};

       case 1:

         return {operator: '-', answer: n1 - n2}

       case 2:

         return {operator: '*', answer: n1 * n2}

       case 3:

         return {operator: '/', answer: n1 / n2}

    }

 }



let questions = generateQuestions();



let answers = questions.map((question) => 

     prompt(question.question));



answers.forEach((answer,i) => {

    console.log(`${questions[i].question} ${answer} ${(answer == 

       questions[i].answer) ? 'Correct': `Wrong should be 

       ${questions[i].answer}`}`)

});

let questionsCount = 10;



function generateQuestions() {

    let questions = ; 



    for(let i = 0;i < questionsCount;i++) {

      let n1 = Math.floor(Math.random() * 101);

      let n2 = Math.floor(Math.random() * 101);

      let operatorObj = randomOperator(n1,n2)

      questions.push({

         question: `${n1} ${operatorObj.operator} ${n2} ?`,

         answer: operatorObj.answer

      });

    }



    return questions;

}









 function randomOperator(n1,n2) {

    let n = Math.floor(Math.random() * 4);

    switch (n) {

       case 0: 

         return {operator: '+', answer: n1 + n2};

       case 1:

         return {operator: '-', answer: n1 - n2}

       case 2:

         return {operator: '*', answer: n1 * n2}

       case 3:

         return {operator: '/', answer: n1 / n2}

    }

 }



let questions = generateQuestions();



let answers = questions.map((question) => 

     prompt(question.question));



answers.forEach((answer,i) => {

    console.log(`${questions[i].question} ${answer} ${(answer == 

       questions[i].answer) ? 'Correct': `Wrong should be 

       ${questions[i].answer}`}`)

});

answered Nov 27 '18 at 3:53

onecompileman

4715

answered Nov 27 '18 at 3:53

onecompileman

4715

answered Nov 27 '18 at 3:53

onecompileman

4715

answered Nov 27 '18 at 3:53

onecompileman

4715

Thank you for your answer my friend, how to add 2 marks per correct answer).

– siaylum
Nov 27 '18 at 4:09

add a comment |

Thank you for your answer my friend, how to add 2 marks per correct answer).

– siaylum
Nov 27 '18 at 4:09

Thank you for your answer my friend, how to add 2 marks per correct answer).

– siaylum
Nov 27 '18 at 4:09

add a comment |

You can use switch-case statement to select the operator and use Math.random() to randomize it

var arr = 

while(arr.length < 8){

    var r = Math.floor(Math.random()*100) + 1;

    if(arr.indexOf(r) === -1) arr.push(r);

}



for (var i=0; i<4; i++) {

    operator = Math.floor(Math.random() * 3);

    switch(operator) {

        case 0:

            eval(prompt(arr[i*2] + " + " + arr[i*2+1]));

            break;

        case 1:

            eval(prompt(arr[i*2] + " - " + arr[i*2+1]));

            break;

        case 2:

            eval(prompt(arr[i*2] + " * " + arr[i*2+1]));

            break;

    }

}

edited Nov 27 '18 at 4:00

answered Nov 27 '18 at 3:29

Andreas

1,97931018

How to show this equation in prompt. I wrote like this, but this is not working properly. eval(prompt (" + "));

– siaylum
Nov 27 '18 at 3:57

Edited my answer to use eval(prompt())

– Andreas
Nov 27 '18 at 4:01

Thank you for your answer my friend, how to add 2 marks per correct answer)

– siaylum
Nov 27 '18 at 4:12

Please attempt that by yourself first

– Andreas
Nov 27 '18 at 4:13

add a comment |

You can use switch-case statement to select the operator and use Math.random() to randomize it

var arr = 

while(arr.length < 8){

    var r = Math.floor(Math.random()*100) + 1;

    if(arr.indexOf(r) === -1) arr.push(r);

}



for (var i=0; i<4; i++) {

    operator = Math.floor(Math.random() * 3);

    switch(operator) {

        case 0:

            eval(prompt(arr[i*2] + " + " + arr[i*2+1]));

            break;

        case 1:

            eval(prompt(arr[i*2] + " - " + arr[i*2+1]));

            break;

        case 2:

            eval(prompt(arr[i*2] + " * " + arr[i*2+1]));

            break;

    }

}

edited Nov 27 '18 at 4:00

answered Nov 27 '18 at 3:29

Andreas

1,97931018

How to show this equation in prompt. I wrote like this, but this is not working properly. eval(prompt (" + "));

– siaylum
Nov 27 '18 at 3:57

Edited my answer to use eval(prompt())

– Andreas
Nov 27 '18 at 4:01

Thank you for your answer my friend, how to add 2 marks per correct answer)

– siaylum
Nov 27 '18 at 4:12

Please attempt that by yourself first

– Andreas
Nov 27 '18 at 4:13

add a comment |

You can use switch-case statement to select the operator and use Math.random() to randomize it

var arr = 

while(arr.length < 8){

    var r = Math.floor(Math.random()*100) + 1;

    if(arr.indexOf(r) === -1) arr.push(r);

}



for (var i=0; i<4; i++) {

    operator = Math.floor(Math.random() * 3);

    switch(operator) {

        case 0:

            eval(prompt(arr[i*2] + " + " + arr[i*2+1]));

            break;

        case 1:

            eval(prompt(arr[i*2] + " - " + arr[i*2+1]));

            break;

        case 2:

            eval(prompt(arr[i*2] + " * " + arr[i*2+1]));

            break;

    }

}

edited Nov 27 '18 at 4:00

answered Nov 27 '18 at 3:29

Andreas

1,97931018

You can use switch-case statement to select the operator and use Math.random() to randomize it

var arr = 

while(arr.length < 8){

    var r = Math.floor(Math.random()*100) + 1;

    if(arr.indexOf(r) === -1) arr.push(r);

}



for (var i=0; i<4; i++) {

    operator = Math.floor(Math.random() * 3);

    switch(operator) {

        case 0:

            eval(prompt(arr[i*2] + " + " + arr[i*2+1]));

            break;

        case 1:

            eval(prompt(arr[i*2] + " - " + arr[i*2+1]));

            break;

        case 2:

            eval(prompt(arr[i*2] + " * " + arr[i*2+1]));

            break;

    }

}

edited Nov 27 '18 at 4:00

answered Nov 27 '18 at 3:29

Andreas

1,97931018

edited Nov 27 '18 at 4:00

answered Nov 27 '18 at 3:29

Andreas

1,97931018

answered Nov 27 '18 at 3:29

Andreas

1,97931018

answered Nov 27 '18 at 3:29

Andreas

1,97931018

How to show this equation in prompt. I wrote like this, but this is not working properly. eval(prompt (" + "));

– siaylum
Nov 27 '18 at 3:57

Edited my answer to use eval(prompt())

– Andreas
Nov 27 '18 at 4:01

Thank you for your answer my friend, how to add 2 marks per correct answer)

– siaylum
Nov 27 '18 at 4:12

Please attempt that by yourself first

– Andreas
Nov 27 '18 at 4:13

add a comment |

How to show this equation in prompt. I wrote like this, but this is not working properly. eval(prompt (" + "));

– siaylum
Nov 27 '18 at 3:57

Edited my answer to use eval(prompt())

– Andreas
Nov 27 '18 at 4:01

Thank you for your answer my friend, how to add 2 marks per correct answer)

– siaylum
Nov 27 '18 at 4:12

Please attempt that by yourself first

– Andreas
Nov 27 '18 at 4:13

How to show this equation in prompt. I wrote like this, but this is not working properly. eval(prompt (" + "));

– siaylum
Nov 27 '18 at 3:57

Edited my answer to use eval(prompt())

– Andreas
Nov 27 '18 at 4:01

Thank you for your answer my friend, how to add 2 marks per correct answer)

– siaylum
Nov 27 '18 at 4:12

Please attempt that by yourself first

– Andreas
Nov 27 '18 at 4:13

add a comment |

//Solve the equation - math problem game



//change * 4 if you want more operators then add the

//operator as a string inside the operator array...

//you may also add duplicate operators to increase odds

//higher odds of harder operator = harder mode

var a = location;

function start() {

document.body.innerHTML = null;

var operators = ["/", "*", "-", "+"],

  arr = ,

  arrCompiled,

  i = 0, a = location;

while (arr.length < 8) {

  var r = Math.floor(Math.random() * 100) + 1;

  if (arr.indexOf(r) === -1) arr.push(r);

}

while(i < arr.length) {

  var oper = ' '+operators[Math.floor(Math.random() * 4)]+' ';

  if (i === 0) {

    arrCompiled = arr.toString()

.replace(/,/, oper);

  }

  

  arrCompiled = arrCompiled.replace(/,/, oper);

  i++;

}

document.write('<div id="questions">'+arrCompiled+' = ???</div>');

document.getElementById("questions").insertAdjacentHTML('afterend', '<button id="solve">Solve</button>');

}

start();



document.getElementById('solve').addEventListener('click', function() {

  if (document.getElementById('solve')) {

  var x = document.getElementById('questions').innerText.replace(/?/g, "");

  var y = x.replace(/[^0-9*/+-.()]+/g, "");

  var z = Math.round(eval(y) * 100) / 100;

  document.write(x + z + ' - solved <a href="javascript:a.reload();"><button>New Problem</button></a>');

  document.getElementById('questions').remove();

  }

});

answered Nov 27 '18 at 6:05

Techtiger255 Code Mode

4511

Thank you for the your answer my friend.

– siaylum
Nov 28 '18 at 2:27

add a comment |

//Solve the equation - math problem game



//change * 4 if you want more operators then add the

//operator as a string inside the operator array...

//you may also add duplicate operators to increase odds

//higher odds of harder operator = harder mode

var a = location;

function start() {

document.body.innerHTML = null;

var operators = ["/", "*", "-", "+"],

  arr = ,

  arrCompiled,

  i = 0, a = location;

while (arr.length < 8) {

  var r = Math.floor(Math.random() * 100) + 1;

  if (arr.indexOf(r) === -1) arr.push(r);

}

while(i < arr.length) {

  var oper = ' '+operators[Math.floor(Math.random() * 4)]+' ';

  if (i === 0) {

    arrCompiled = arr.toString()

.replace(/,/, oper);

  }

  

  arrCompiled = arrCompiled.replace(/,/, oper);

  i++;

}

document.write('<div id="questions">'+arrCompiled+' = ???</div>');

document.getElementById("questions").insertAdjacentHTML('afterend', '<button id="solve">Solve</button>');

}

start();



document.getElementById('solve').addEventListener('click', function() {

  if (document.getElementById('solve')) {

  var x = document.getElementById('questions').innerText.replace(/?/g, "");

  var y = x.replace(/[^0-9*/+-.()]+/g, "");

  var z = Math.round(eval(y) * 100) / 100;

  document.write(x + z + ' - solved <a href="javascript:a.reload();"><button>New Problem</button></a>');

  document.getElementById('questions').remove();

  }

});

answered Nov 27 '18 at 6:05

Techtiger255 Code Mode

4511

Thank you for the your answer my friend.

– siaylum
Nov 28 '18 at 2:27

add a comment |

//Solve the equation - math problem game



//change * 4 if you want more operators then add the

//operator as a string inside the operator array...

//you may also add duplicate operators to increase odds

//higher odds of harder operator = harder mode

var a = location;

function start() {

document.body.innerHTML = null;

var operators = ["/", "*", "-", "+"],

  arr = ,

  arrCompiled,

  i = 0, a = location;

while (arr.length < 8) {

  var r = Math.floor(Math.random() * 100) + 1;

  if (arr.indexOf(r) === -1) arr.push(r);

}

while(i < arr.length) {

  var oper = ' '+operators[Math.floor(Math.random() * 4)]+' ';

  if (i === 0) {

    arrCompiled = arr.toString()

.replace(/,/, oper);

  }

  

  arrCompiled = arrCompiled.replace(/,/, oper);

  i++;

}

document.write('<div id="questions">'+arrCompiled+' = ???</div>');

document.getElementById("questions").insertAdjacentHTML('afterend', '<button id="solve">Solve</button>');

}

start();



document.getElementById('solve').addEventListener('click', function() {

  if (document.getElementById('solve')) {

  var x = document.getElementById('questions').innerText.replace(/?/g, "");

  var y = x.replace(/[^0-9*/+-.()]+/g, "");

  var z = Math.round(eval(y) * 100) / 100;

  document.write(x + z + ' - solved <a href="javascript:a.reload();"><button>New Problem</button></a>');

  document.getElementById('questions').remove();

  }

});

answered Nov 27 '18 at 6:05

Techtiger255 Code Mode

4511

//Solve the equation - math problem game



//change * 4 if you want more operators then add the

//operator as a string inside the operator array...

//you may also add duplicate operators to increase odds

//higher odds of harder operator = harder mode

var a = location;

function start() {

document.body.innerHTML = null;

var operators = ["/", "*", "-", "+"],

  arr = ,

  arrCompiled,

  i = 0, a = location;

while (arr.length < 8) {

  var r = Math.floor(Math.random() * 100) + 1;

  if (arr.indexOf(r) === -1) arr.push(r);

}

while(i < arr.length) {

  var oper = ' '+operators[Math.floor(Math.random() * 4)]+' ';

  if (i === 0) {

    arrCompiled = arr.toString()

.replace(/,/, oper);

  }

  

  arrCompiled = arrCompiled.replace(/,/, oper);

  i++;

}

document.write('<div id="questions">'+arrCompiled+' = ???</div>');

document.getElementById("questions").insertAdjacentHTML('afterend', '<button id="solve">Solve</button>');

}

start();



document.getElementById('solve').addEventListener('click', function() {

  if (document.getElementById('solve')) {

  var x = document.getElementById('questions').innerText.replace(/?/g, "");

  var y = x.replace(/[^0-9*/+-.()]+/g, "");

  var z = Math.round(eval(y) * 100) / 100;

  document.write(x + z + ' - solved <a href="javascript:a.reload();"><button>New Problem</button></a>');

  document.getElementById('questions').remove();

  }

});

//Solve the equation - math problem game



//change * 4 if you want more operators then add the

//operator as a string inside the operator array...

//you may also add duplicate operators to increase odds

//higher odds of harder operator = harder mode

var a = location;

function start() {

document.body.innerHTML = null;

var operators = ["/", "*", "-", "+"],

  arr = ,

  arrCompiled,

  i = 0, a = location;

while (arr.length < 8) {

  var r = Math.floor(Math.random() * 100) + 1;

  if (arr.indexOf(r) === -1) arr.push(r);

}

while(i < arr.length) {

  var oper = ' '+operators[Math.floor(Math.random() * 4)]+' ';

  if (i === 0) {

    arrCompiled = arr.toString()

.replace(/,/, oper);

  }

  

  arrCompiled = arrCompiled.replace(/,/, oper);

  i++;

}

document.write('<div id="questions">'+arrCompiled+' = ???</div>');

document.getElementById("questions").insertAdjacentHTML('afterend', '<button id="solve">Solve</button>');

}

start();



document.getElementById('solve').addEventListener('click', function() {

  if (document.getElementById('solve')) {

  var x = document.getElementById('questions').innerText.replace(/?/g, "");

  var y = x.replace(/[^0-9*/+-.()]+/g, "");

  var z = Math.round(eval(y) * 100) / 100;

  document.write(x + z + ' - solved <a href="javascript:a.reload();"><button>New Problem</button></a>');

  document.getElementById('questions').remove();

  }

});

//Solve the equation - math problem game



//change * 4 if you want more operators then add the

//operator as a string inside the operator array...

//you may also add duplicate operators to increase odds

//higher odds of harder operator = harder mode

var a = location;

function start() {

document.body.innerHTML = null;

var operators = ["/", "*", "-", "+"],

  arr = ,

  arrCompiled,

  i = 0, a = location;

while (arr.length < 8) {

  var r = Math.floor(Math.random() * 100) + 1;

  if (arr.indexOf(r) === -1) arr.push(r);

}

while(i < arr.length) {

  var oper = ' '+operators[Math.floor(Math.random() * 4)]+' ';

  if (i === 0) {

    arrCompiled = arr.toString()

.replace(/,/, oper);

  }

  

  arrCompiled = arrCompiled.replace(/,/, oper);

  i++;

}

document.write('<div id="questions">'+arrCompiled+' = ???</div>');

document.getElementById("questions").insertAdjacentHTML('afterend', '<button id="solve">Solve</button>');

}

start();



document.getElementById('solve').addEventListener('click', function() {

  if (document.getElementById('solve')) {

  var x = document.getElementById('questions').innerText.replace(/?/g, "");

  var y = x.replace(/[^0-9*/+-.()]+/g, "");

  var z = Math.round(eval(y) * 100) / 100;

  document.write(x + z + ' - solved <a href="javascript:a.reload();"><button>New Problem</button></a>');

  document.getElementById('questions').remove();

  }

});

answered Nov 27 '18 at 6:05

Techtiger255 Code Mode

4511

answered Nov 27 '18 at 6:05

Techtiger255 Code Mode

4511

answered Nov 27 '18 at 6:05

Techtiger255 Code Mode

4511

answered Nov 27 '18 at 6:05

Techtiger255 Code Mode

4511

Thank you for the your answer my friend.

– siaylum
Nov 28 '18 at 2:27

add a comment |

Thank you for the your answer my friend.

– siaylum
Nov 28 '18 at 2:27

Thank you for the your answer my friend.

– siaylum
Nov 28 '18 at 2:27

add a comment |

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