``
data() {
return {
beforeTree: [
{
a: 1,
b: 2,
list: [
{
c: 3,
d: 4,
e: 5
},
{
c: 3,
d: 4,
e: 5,
list: [
{
f: 1,
g: 2,
z: 3
}
]
}
]
},
{
a: 3,
b: 2,
list: [
{
c: 3,
d: 4,
e: 5
},
{
c: 3,
d: 4,
e: 5,
list: [
{
f: 5,
g: 6,
z: 7
}
]
}
]
}
],
afterTree: [],
}
//=========三层以内==============================
changeTree() {
this.afterTree = []
this.beforeTree.forEach(item => {
if (Array.isArray(item.list) && item.list.length){
item.list.forEach(mItem => {
mItem.a = item.a
mItem.b = item.b
if (Array.isArray(mItem.list) && mItem.list.length){
mItem.list.forEach(lItem => {
lItem.a = mItem.a
lItem.b = mItem.b
lItem.c = mItem.c
lItem.d = mItem.d
lItem.e = mItem.e
this.afterTree.push(lItem)
})
}else{
this.afterTree.push(mItem)
}
})
}else{
this.afterTree.push(item)
}
})
console.log(this.beforeTree,'beforeTree')
console.log(this.afterTree,'afterTree')
},
