vue2 'computed' value created after 'created' value
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 '18 at 2:07
VeexyyVeexyy
133
add a comment |
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 '18 at 2:07
VeexyyVeexyy
133
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 '18 at 2:10
I suggest you read this ~ vuejs.org/v2/guide/instance.html#Lifecycle-Diagram
– Phil
Nov 22 '18 at 2:23
add a comment |
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 '18 at 2:07
VeexyyVeexyy
133
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 '18 at 2:07
VeexyyVeexyy
133
asked Nov 22 '18 at 2:07
VeexyyVeexyy
133
edited Nov 22 '18 at 2:37
Veexyy
asked Nov 22 '18 at 2:07
VeexyyVeexyy
133
asked Nov 22 '18 at 2:07
VeexyyVeexyy
133
asked Nov 22 '18 at 2:07
VeexyyVeexyy
133
133
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 '18 at 2:10
I suggest you read this ~ vuejs.org/v2/guide/instance.html#Lifecycle-Diagram
– Phil
Nov 22 '18 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 '18 at 2:10
I suggest you read this ~ vuejs.org/v2/guide/instance.html#Lifecycle-Diagram
– Phil
Nov 22 '18 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 '18 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 '18 at 2:10
I suggest you read this ~ vuejs.org/v2/guide/instance.html#Lifecycle-Diagram
– Phil
Nov 22 '18 at 2:23
I suggest you read this ~ vuejs.org/v2/guide/instance.html#Lifecycle-Diagram
– Phil
Nov 22 '18 at 2:23
add a comment |
1 Answer
1
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oldest
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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 '18 at 5:22
AustioAustio
4,5171228
add a comment |
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active
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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 '18 at 5:22
AustioAustio
4,5171228
add a comment |
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 '18 at 5:22
AustioAustio
4,5171228
add a comment |
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 '18 at 5:22
AustioAustio
4,5171228
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 '18 at 5:22
AustioAustio
4,5171228
answered Nov 22 '18 at 5:22
AustioAustio
4,5171228
answered Nov 22 '18 at 5:22
AustioAustio
4,5171228
answered Nov 22 '18 at 5:22
AustioAustio
4,5171228
4,5171228
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 '18 at 2:10
I suggest you read this ~ vuejs.org/v2/guide/instance.html#Lifecycle-Diagram
– Phil
Nov 22 '18 at 2:23