原数组：
arr=[
{ name: '北京', id: 110000, childList: [{ name: '北京', id: 110001, childList: [ { name: '东城', id: 110101},{ name: '西城', id: 110102} ] }] },
{ name: '天津', id: 120000, childList: [{ name: '天津', id: 120001, childList: [ { name: '和平', id: 120101},{ name: '河东', id: 120102} ] }] },
....
{ name: '广东', id: 440000, childList: [{ name: '广州', id: 440001, childList: [ { name: '荔湾', id: 440101},{ name: '越秀', id: 440102} ] }] }
]
方法：
function find(list, id) {
return list && id? (function filter(arr) {
for (var i = 0; i < arr.length; ++i) {
var itemId = arr[i].id;
var children = arr[i].childList || [];
var _ret = arr[i];
if (id === itemId) {
return _ret;
} else if (children.length) {
_ret = filter(children);
if (_ret) return _ret;
}
}
return null;
})(list) : null;
}
console.dir(find(arr, 110101));
源地址： 三维数组取值
标签：arr,name,递归,三维,ret,childList,数组,var,id From： https://www.cnblogs.com/ifeelthecall/p/16833562.html