vue 学习笔记（三）报错： TypeError: Cannot set property '0' of undefined
TypeError: Cannot set property '0' of undefined具体报错代码如下submit () {back.submitForm().then((response) => {let sets = []if (response.data !== undefined) {for (let ...
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TypeError: Cannot set property '0' of undefined
具体报错代码如下
submit () {
back.submitForm().then((response) => {
let sets = []
if (response.data !== undefined) {
for (let i = 0; i < response.data.length; i++) {
console.log(response.data[0].name)
let groupinfo = {}
groupinfo.name = response.data[i].name
for (let j = 0; j < response.data[i].total; j++) {
let ingroup = {}
ingroup = response.data[i].powerSockets[j]
groupinfo.items[j] = ingroup
}
sets[i] = groupinfo
}
}
this.list = sets
})
}
groupinfo.items[j] = ingroup
该行报错，只找到空值。
解决方法：
submit () {
back.submitForm().then((response) => {
let sets = []
if (response.data !== undefined) {
for (let i = 0; i < response.data.length; i++) {
console.log(response.data)
let groupinfo = {}
let ingroup = []
if (response.data[i].powerSockets !== undefined) {
for (let j = 0; j < response.data[i].total; j++) {
let obj = {}
obj.item = response.data[i].powerSockets[j].used
ingroup[j] = obj
}
}
groupinfo.name = response.data[i].name
groupinfo.children = ingroup
sets[i] = groupinfo
}
}
this.list = sets
})
}
TypeError: Cannot set property '0' of undefined
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