Getting variable out of double function
There was already post with same question, but none of answers was doing what i suppose to do. So here is code example:
function findIP(onNewIP) {
var myPeerConnection = window.RTCPeerConnection || window.mozRTCPeerConnection || window.webkitRTCPeerConnection;
var pc = new myPeerConnection({
iceServers: [{
urls: "stun:stun.l.google.com:19302"
}]
}),
noop = function() {},
localIPs = {},
ipRegex = /([0-9]{1,3}(.[0-9]{1,3}){3}|[a-f0-9]{1,4}(:[a-f0-9]{1,4}){7})/g,
key;
function ipIterate(ip) {
if (!localIPs[ip]) onNewIP(ip);
localIPs[ip] = true;
}
pc.createDataChannel("");
pc.createOffer(function(sdp) {
sdp.sdp.split('n').forEach(function(line) {
if (line.indexOf('candidate') < 0) return;
line.match(ipRegex).forEach(ipIterate);
});
pc.setLocalDescription(sdp, noop, noop);
}, noop);
pc.onicecandidate = function(ice) {
if (!ice || !ice.candidate || !ice.candidate.candidate || !ice.candidate.candidate.match(ipRegex)) return;
ice.candidate.candidate.match(ipRegex).forEach(ipIterate);
};
}
That code is JS function, and after is goes usage:
function addIP(ip) {
var li = document.createElement('li');
li.textContent = ip;
document.getElementById("IPLeak").appendChild(li);
}
findIP(addIP);
So what this usage is doing, is taking all 3 ip's(local,local ip6 and public ip4) and displaying it with li element.However, what i need, is only one ip address(public ip4), and it need to be stored into variable so i can process it further. In this case variable which need to be taken out it's ip variable in function addIP(ip).
I did found one code example which can get variable outside function:
<script>
function profileloader()
{
profile = ; // no "var" makes this global in scope
profile[0] = "Joe";
profile[1] = "Bloggs";
profile[2] = "images/joeb/pic.jpg";
profile[3] = "Web Site Manager";
}
profileloader();
document.write("Firstname is: " + profile[0]);
</script>But when i try to implement , problem is how it works with single function while in code there is function executing function, so i was not able to get variable output. Any ideas?
javascript
edited Nov 23 '18 at 13:10
Matt Morgan
2,2052820
asked Nov 23 '18 at 12:48
Luke Ventura
1
add a comment |
There was already post with same question, but none of answers was doing what i suppose to do. So here is code example:
function findIP(onNewIP) {
var myPeerConnection = window.RTCPeerConnection || window.mozRTCPeerConnection || window.webkitRTCPeerConnection;
var pc = new myPeerConnection({
iceServers: [{
urls: "stun:stun.l.google.com:19302"
}]
}),
noop = function() {},
localIPs = {},
ipRegex = /([0-9]{1,3}(.[0-9]{1,3}){3}|[a-f0-9]{1,4}(:[a-f0-9]{1,4}){7})/g,
key;
function ipIterate(ip) {
if (!localIPs[ip]) onNewIP(ip);
localIPs[ip] = true;
}
pc.createDataChannel("");
pc.createOffer(function(sdp) {
sdp.sdp.split('n').forEach(function(line) {
if (line.indexOf('candidate') < 0) return;
line.match(ipRegex).forEach(ipIterate);
});
pc.setLocalDescription(sdp, noop, noop);
}, noop);
pc.onicecandidate = function(ice) {
if (!ice || !ice.candidate || !ice.candidate.candidate || !ice.candidate.candidate.match(ipRegex)) return;
ice.candidate.candidate.match(ipRegex).forEach(ipIterate);
};
}
That code is JS function, and after is goes usage:
function addIP(ip) {
var li = document.createElement('li');
li.textContent = ip;
document.getElementById("IPLeak").appendChild(li);
}
findIP(addIP);
So what this usage is doing, is taking all 3 ip's(local,local ip6 and public ip4) and displaying it with li element.However, what i need, is only one ip address(public ip4), and it need to be stored into variable so i can process it further. In this case variable which need to be taken out it's ip variable in function addIP(ip).
I did found one code example which can get variable outside function:
<script>
function profileloader()
{
profile = ; // no "var" makes this global in scope
profile[0] = "Joe";
profile[1] = "Bloggs";
profile[2] = "images/joeb/pic.jpg";
profile[3] = "Web Site Manager";
}
profileloader();
document.write("Firstname is: " + profile[0]);
</script>But when i try to implement , problem is how it works with single function while in code there is function executing function, so i was not able to get variable output. Any ideas?
javascript
edited Nov 23 '18 at 13:10
Matt Morgan
2,2052820
asked Nov 23 '18 at 12:48
Luke Ventura
1
add a comment |
There was already post with same question, but none of answers was doing what i suppose to do. So here is code example:
function findIP(onNewIP) {
var myPeerConnection = window.RTCPeerConnection || window.mozRTCPeerConnection || window.webkitRTCPeerConnection;
var pc = new myPeerConnection({
iceServers: [{
urls: "stun:stun.l.google.com:19302"
}]
}),
noop = function() {},
localIPs = {},
ipRegex = /([0-9]{1,3}(.[0-9]{1,3}){3}|[a-f0-9]{1,4}(:[a-f0-9]{1,4}){7})/g,
key;
function ipIterate(ip) {
if (!localIPs[ip]) onNewIP(ip);
localIPs[ip] = true;
}
pc.createDataChannel("");
pc.createOffer(function(sdp) {
sdp.sdp.split('n').forEach(function(line) {
if (line.indexOf('candidate') < 0) return;
line.match(ipRegex).forEach(ipIterate);
});
pc.setLocalDescription(sdp, noop, noop);
}, noop);
pc.onicecandidate = function(ice) {
if (!ice || !ice.candidate || !ice.candidate.candidate || !ice.candidate.candidate.match(ipRegex)) return;
ice.candidate.candidate.match(ipRegex).forEach(ipIterate);
};
}
That code is JS function, and after is goes usage:
function addIP(ip) {
var li = document.createElement('li');
li.textContent = ip;
document.getElementById("IPLeak").appendChild(li);
}
findIP(addIP);
So what this usage is doing, is taking all 3 ip's(local,local ip6 and public ip4) and displaying it with li element.However, what i need, is only one ip address(public ip4), and it need to be stored into variable so i can process it further. In this case variable which need to be taken out it's ip variable in function addIP(ip).
I did found one code example which can get variable outside function:
<script>
function profileloader()
{
profile = ; // no "var" makes this global in scope
profile[0] = "Joe";
profile[1] = "Bloggs";
profile[2] = "images/joeb/pic.jpg";
profile[3] = "Web Site Manager";
}
profileloader();
document.write("Firstname is: " + profile[0]);
</script>But when i try to implement , problem is how it works with single function while in code there is function executing function, so i was not able to get variable output. Any ideas?
javascript
edited Nov 23 '18 at 13:10
Matt Morgan
2,2052820
asked Nov 23 '18 at 12:48
Luke Ventura
1
There was already post with same question, but none of answers was doing what i suppose to do. So here is code example:
function findIP(onNewIP) {
var myPeerConnection = window.RTCPeerConnection || window.mozRTCPeerConnection || window.webkitRTCPeerConnection;
var pc = new myPeerConnection({
iceServers: [{
urls: "stun:stun.l.google.com:19302"
}]
}),
noop = function() {},
localIPs = {},
ipRegex = /([0-9]{1,3}(.[0-9]{1,3}){3}|[a-f0-9]{1,4}(:[a-f0-9]{1,4}){7})/g,
key;
function ipIterate(ip) {
if (!localIPs[ip]) onNewIP(ip);
localIPs[ip] = true;
}
pc.createDataChannel("");
pc.createOffer(function(sdp) {
sdp.sdp.split('n').forEach(function(line) {
if (line.indexOf('candidate') < 0) return;
line.match(ipRegex).forEach(ipIterate);
});
pc.setLocalDescription(sdp, noop, noop);
}, noop);
pc.onicecandidate = function(ice) {
if (!ice || !ice.candidate || !ice.candidate.candidate || !ice.candidate.candidate.match(ipRegex)) return;
ice.candidate.candidate.match(ipRegex).forEach(ipIterate);
};
}
That code is JS function, and after is goes usage:
function addIP(ip) {
var li = document.createElement('li');
li.textContent = ip;
document.getElementById("IPLeak").appendChild(li);
}
findIP(addIP);
So what this usage is doing, is taking all 3 ip's(local,local ip6 and public ip4) and displaying it with li element.However, what i need, is only one ip address(public ip4), and it need to be stored into variable so i can process it further. In this case variable which need to be taken out it's ip variable in function addIP(ip).
I did found one code example which can get variable outside function:
<script>
function profileloader()
{
profile = ; // no "var" makes this global in scope
profile[0] = "Joe";
profile[1] = "Bloggs";
profile[2] = "images/joeb/pic.jpg";
profile[3] = "Web Site Manager";
}
profileloader();
document.write("Firstname is: " + profile[0]);
</script>But when i try to implement , problem is how it works with single function while in code there is function executing function, so i was not able to get variable output. Any ideas?
<script>
function profileloader()
{
profile = ; // no "var" makes this global in scope
profile[0] = "Joe";
profile[1] = "Bloggs";
profile[2] = "images/joeb/pic.jpg";
profile[3] = "Web Site Manager";
}
profileloader();
document.write("Firstname is: " + profile[0]);
</script><script>
function profileloader()
{
profile = ; // no "var" makes this global in scope
profile[0] = "Joe";
profile[1] = "Bloggs";
profile[2] = "images/joeb/pic.jpg";
profile[3] = "Web Site Manager";
}
profileloader();
document.write("Firstname is: " + profile[0]);
</script>javascript
javascript
edited Nov 23 '18 at 13:10
Matt Morgan
2,2052820
asked Nov 23 '18 at 12:48
Luke Ventura
1
edited Nov 23 '18 at 13:10
Matt Morgan
2,2052820
asked Nov 23 '18 at 12:48
Luke Ventura
1
edited Nov 23 '18 at 13:10
Matt Morgan
2,2052820
edited Nov 23 '18 at 13:10
Matt Morgan
2,2052820
edited Nov 23 '18 at 13:10
Matt Morgan
2,2052820
2,2052820
asked Nov 23 '18 at 12:48
Luke Ventura
1
asked Nov 23 '18 at 12:48
Luke Ventura
1
asked Nov 23 '18 at 12:48
Luke Ventura
1
1
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
you need to learn about callbacks https://developer.mozilla.org/en-US/docs/Glossary/Callback_function
you function findIP takes a callback that function gets called a couple of times with an ip, so to log for example all ips you could call
findIP(function(ip){console.log(ip)});
answered Nov 23 '18 at 13:07
L.A
10318
I see that command is working, but i still dont get why not using something like, findIP(function(ip){var x="(ip)"}); it's not working. I read about that callback function but not sure how exactly to make it work.
– Luke Ventura
Nov 23 '18 at 17:55
add a comment |
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1 Answer
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1 Answer
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active
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oldest
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oldest
votes
you need to learn about callbacks https://developer.mozilla.org/en-US/docs/Glossary/Callback_function
you function findIP takes a callback that function gets called a couple of times with an ip, so to log for example all ips you could call
findIP(function(ip){console.log(ip)});
answered Nov 23 '18 at 13:07
L.A
10318
I see that command is working, but i still dont get why not using something like, findIP(function(ip){var x="(ip)"}); it's not working. I read about that callback function but not sure how exactly to make it work.
– Luke Ventura
Nov 23 '18 at 17:55
add a comment |
you need to learn about callbacks https://developer.mozilla.org/en-US/docs/Glossary/Callback_function
you function findIP takes a callback that function gets called a couple of times with an ip, so to log for example all ips you could call
findIP(function(ip){console.log(ip)});
answered Nov 23 '18 at 13:07
L.A
10318
I see that command is working, but i still dont get why not using something like, findIP(function(ip){var x="(ip)"}); it's not working. I read about that callback function but not sure how exactly to make it work.
– Luke Ventura
Nov 23 '18 at 17:55
add a comment |
you need to learn about callbacks https://developer.mozilla.org/en-US/docs/Glossary/Callback_function
you function findIP takes a callback that function gets called a couple of times with an ip, so to log for example all ips you could call
findIP(function(ip){console.log(ip)});
answered Nov 23 '18 at 13:07
L.A
10318
you need to learn about callbacks https://developer.mozilla.org/en-US/docs/Glossary/Callback_function
you function findIP takes a callback that function gets called a couple of times with an ip, so to log for example all ips you could call
findIP(function(ip){console.log(ip)});
answered Nov 23 '18 at 13:07
L.A
10318
answered Nov 23 '18 at 13:07
L.A
10318
answered Nov 23 '18 at 13:07
L.A
10318
answered Nov 23 '18 at 13:07
L.A
10318
10318
I see that command is working, but i still dont get why not using something like, findIP(function(ip){var x="(ip)"}); it's not working. I read about that callback function but not sure how exactly to make it work.
– Luke Ventura
Nov 23 '18 at 17:55
add a comment |
I see that command is working, but i still dont get why not using something like, findIP(function(ip){var x="(ip)"}); it's not working. I read about that callback function but not sure how exactly to make it work.
– Luke Ventura
Nov 23 '18 at 17:55
I see that command is working, but i still dont get why not using something like, findIP(function(ip){var x="(ip)"}); it's not working. I read about that callback function but not sure how exactly to make it work.
– Luke Ventura
Nov 23 '18 at 17:55
I see that command is working, but i still dont get why not using something like, findIP(function(ip){var x="(ip)"}); it's not working. I read about that callback function but not sure how exactly to make it work.
– Luke Ventura
Nov 23 '18 at 17:55
add a comment |
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