javascript - jQuery中each循环json正确的该怎么写?
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问题描述
问 题
需求:根据后台传来的json数据循环出一个多级导航菜单
问题:
1、循环时二级和三级子菜单li标签外层包裹ul标签怎么写?
2、我这样写是否正确?有没有更好的写法?应该怎样写?
ps:本人小白,还望大神耐心指点。多谢
json数据大概如下:
[
{ "id":"1" , "name":"类型一","type":"a",
"cc":[
{ "id":"1-1" , "name":"二级1.1","type":"bb" },
{ "id":"1-2" , "name":"二级1.2","type":"cc",
"cc":[
{ "id":"1-1-1" , "name":"三级1.1.1","type":"aaa" },
{ "id":"1-1-2" , "name":"三级1.1.2","type":"bbb" },
{ "id":"1-1-3" , "name":"三级1.1.3","type":"ccc" },
{ "id":"1-1-4" , "name":"三级1.1.4","type":"ddd" }
]},
{ "id":"1-3" , "name":"二级1.3","type":"dd" },
{ "id":"1-4" , "name":"二级1.4","type":"ee" }
]
},
{ "id":"2" , "name":"类型二","type":"b",
"cc":[
{ "id":"2-1" , "name":"二级2.1","type":"ff" },
{ "id":"2-2" , "name":"二级2.2","type":"gg",
"cc":[
{ "id":"2-2-1" , "name":"三级2.2.1","type":"fff" },
{ "id":"2-2-2" , "name":"三级2.2.2","type":"ggg" },
{ "id":"2-2-3" , "name":"三级2.2.3","type":"hhh" },
{ "id":"2-2-4" , "name":"三级2.2.4","type":"iii" }
]},
{ "id":"1-3" , "name":"二级2.3","type":"hh" },
{ "id":"1-4" , "name":"二级2.4","type":"ii" }
]},
{ "id":"3" , "name":"类型三","type":"c" },
{ "id":"4" , "name":"类型四","type":"d" }
]
jquery代码如下:
$(function () {
$.ajax({
type: "post",
url: "./json/test.json",
success: function (data) {
$.each(data, function(index, content){
var showList = $("<li class='nav" + content.id + "'> "+ content.name +" </li>");
$.each(data[index].cc,function (i,k) {
var showC = $("<li class='list" + k.id + "'> "+ k.name +" </li>");
$.each(data[index].cc[i].cc,function (m,n) {
var showCC = $("<li class='list" + n.id + "'> "+ n.name +" </li>");
showC.append(showCC)
});
showList.append(showC)
});
$(".nav-list").append(showList);
});
}
});
});
HTML 代码如下:
<ul class="nav-list"></ul>
解决方案
<script type="text/javascript">
$.ajax({
type: "get",
url: "/media/json/test.json",
success: function (data) {
var list = "";
$.each(data, function (index, item) {
list += "<li>" + item.name;
var data2 = item.cc;
if (data2) {
$.each(data2, function (index2, item2) {
if (index2 === 0) {
list += "<ul>";
}
list += "<li>" + item2.name;
var data3 = item2.cc;
if(data3) {
$.each(data3, function (index3, item3) {
if (index3 === 0) {
list += "<ul>";
}
list += "<li>" + item3.name + "</li>";
if (index3 + 1 === data3.length) {
list += "</ul>";
}
});
}
list += "</li>";
if (index2 + 1 === data2.length) {
list += "</ul>";
}
});
}
list += "</li>";
console.log(list);
});
console.log(list);
$("#nav-list").append(list);
}
});
</script>
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