前言

我在写小程序的时候，出现一个问题，就是多层列表的嵌套渲染，其中包括wx:for以及wx:key的使用，借此总结下来，一是给自己总结问题，二是希望阔以帮助到大家…

一层循环

{
	channel: [
		{
			id: 1005000,
			name: "居家",
			url: "/pages/category/category?id=1005000",
			icon_url: "https://yanxuan.nosdn.127.net/4f00675caefd0d4177892ad18bfc2df6.png",
			sort_order: 1
		},
		{
			id: 1005001,
			name: "餐厨",
			url: "/pages/category/category?id=1005001",
			icon_url: "https://yanxuan.nosdn.127.net/4aab4598017b5749e3b63309d25e9f6b.png",
			sort_order: 2
		},
		{
			id: 1005002,
			name: "服装",
			url: "/pages/category/category?id=1005002",
			icon_url: "https://yanxuan.nosdn.127.net/93168242df456b5f7bf3c89653b3db76.png",
			sort_order: 4
		},
		{
			id: 1008000,
			name: "配件",
			url: "/pages/category/category?id=1008000"