vue2 'computed' value created after 'created' value
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0
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I am confused cause when I search google and find articles all tell me in vue's life cycle, 'computed' was before 'created',but in my code, i got result 2
before result 1, how can resolve this?
computed: {
options() {
const imgData = {
img: this.modifyData,
fixedNumber: this.ratio
}
console.log(1)
return Object.assign({}, this.defaultOptions, imgData)
}
},
watch: {
modifyData(nval) {
// nothing to do yet
}
},
created() {
console.log(2)
},
...
update:
'this.modifyData' was from axios.get(...) , so it would be undefined at the beginning, Though i have solved this problem but still confused why result 2 was go before result 1?
vuejs2
asked Nov 22 at 2:07
Veexyy
83
add a comment |
up vote
0
down vote
favorite
I am confused cause when I search google and find articles all tell me in vue's life cycle, 'computed' was before 'created',but in my code, i got result 2
before result 1, how can resolve this?
computed: {
options() {
const imgData = {
img: this.modifyData,
fixedNumber: this.ratio
}
console.log(1)
return Object.assign({}, this.defaultOptions, imgData)
}
},
watch: {
modifyData(nval) {
// nothing to do yet
}
},
created() {
console.log(2)
},
...
update:
'this.modifyData' was from axios.get(...) , so it would be undefined at the beginning, Though i have solved this problem but still confused why result 2 was go before result 1?
vuejs2
asked Nov 22 at 2:07
Veexyy
83
2
Can you link to these articles? Computed properties only execute during rendering and only when required by changes to reactive data
– Phil
Nov 22 at 2:10
I suggest you read this ~ vuejs.org/v2/guide/instance.html#Lifecycle-Diagram
– Phil
Nov 22 at 2:23
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I am confused cause when I search google and find articles all tell me in vue's life cycle, 'computed' was before 'created',but in my code, i got result 2
before result 1, how can resolve this?
computed: {
options() {
const imgData = {
img: this.modifyData,
fixedNumber: this.ratio
}
console.log(1)
return Object.assign({}, this.defaultOptions, imgData)
}
},
watch: {
modifyData(nval) {
// nothing to do yet
}
},
created() {
console.log(2)
},
...
update:
'this.modifyData' was from axios.get(...) , so it would be undefined at the beginning, Though i have solved this problem but still confused why result 2 was go before result 1?
vuejs2
asked Nov 22 at 2:07
Veexyy
83
I am confused cause when I search google and find articles all tell me in vue's life cycle, 'computed' was before 'created',but in my code, i got result 2
before result 1, how can resolve this?
computed: {
options() {
const imgData = {
img: this.modifyData,
fixedNumber: this.ratio
}
console.log(1)
return Object.assign({}, this.defaultOptions, imgData)
}
},
watch: {
modifyData(nval) {
// nothing to do yet
}
},
created() {
console.log(2)
},
...
update:
'this.modifyData' was from axios.get(...) , so it would be undefined at the beginning, Though i have solved this problem but still confused why result 2 was go before result 1?
vuejs2
vuejs2
asked Nov 22 at 2:07
Veexyy
83
asked Nov 22 at 2:07
Veexyy
83
edited Nov 22 at 2:37
asked Nov 22 at 2:07
Veexyy
83
asked Nov 22 at 2:07
Veexyy
83
asked Nov 22 at 2:07
Veexyy
83
83
2
Can you link to these articles? Computed properties only execute during rendering and only when required by changes to reactive data
– Phil
Nov 22 at 2:10
I suggest you read this ~ vuejs.org/v2/guide/instance.html#Lifecycle-Diagram
– Phil
Nov 22 at 2:23
add a comment |
2
Can you link to these articles? Computed properties only execute during rendering and only when required by changes to reactive data
– Phil
Nov 22 at 2:10
I suggest you read this ~ vuejs.org/v2/guide/instance.html#Lifecycle-Diagram
– Phil
Nov 22 at 2:23
2
2
Can you link to these articles? Computed properties only execute during rendering and only when required by changes to reactive data
– Phil
Nov 22 at 2:10
Can you link to these articles? Computed properties only execute during rendering and only when required by changes to reactive data
– Phil
Nov 22 at 2:10
I suggest you read this ~ vuejs.org/v2/guide/instance.html#Lifecycle-Diagram
– Phil
Nov 22 at 2:23
I suggest you read this ~ vuejs.org/v2/guide/instance.html#Lifecycle-Diagram
– Phil
Nov 22 at 2:23
add a comment |
1 Answer
1
active
oldest
votes
up vote
0
down vote
accepted
When the vue instance is initialize, the created function is ran. That is why you see 2. The reason that the value from your computed property logs out 1 later is that computed properties are lazy, meaning that their values are not created until they are needed.
answered Nov 22 at 5:22
Austio
4,4871128
add a comment |
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
0
down vote
accepted
When the vue instance is initialize, the created function is ran. That is why you see 2. The reason that the value from your computed property logs out 1 later is that computed properties are lazy, meaning that their values are not created until they are needed.
answered Nov 22 at 5:22
Austio
4,4871128
add a comment |
up vote
0
down vote
accepted
When the vue instance is initialize, the created function is ran. That is why you see 2. The reason that the value from your computed property logs out 1 later is that computed properties are lazy, meaning that their values are not created until they are needed.
answered Nov 22 at 5:22
Austio
4,4871128
add a comment |
up vote
0
down vote
accepted
up vote
0
down vote
accepted
When the vue instance is initialize, the created function is ran. That is why you see 2. The reason that the value from your computed property logs out 1 later is that computed properties are lazy, meaning that their values are not created until they are needed.
answered Nov 22 at 5:22
Austio
4,4871128
When the vue instance is initialize, the created function is ran. That is why you see 2. The reason that the value from your computed property logs out 1 later is that computed properties are lazy, meaning that their values are not created until they are needed.
answered Nov 22 at 5:22
Austio
4,4871128
answered Nov 22 at 5:22
Austio
4,4871128
answered Nov 22 at 5:22
Austio
4,4871128
answered Nov 22 at 5:22
Austio
4,4871128
4,4871128
add a comment |
add a comment |
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2
Can you link to these articles? Computed properties only execute during rendering and only when required by changes to reactive data
– Phil
Nov 22 at 2:10
I suggest you read this ~ vuejs.org/v2/guide/instance.html#Lifecycle-Diagram
– Phil
Nov 22 at 2:23