layui admin 根据后台json数据动态生成左侧菜单栏

1.使用模板方式加载菜单

lay-url=“菜单接口”

lay-headers=“将token带入请求头”，如果没有，去掉就行

在模板中使用console.log 示例： {{# console.log(1) }}

layui.data(‘layuiAdmin’).token 调用本地存储的token,token名需要和本地存储对应

json字段名不需要和这里的一样，json字段名改变，模板里面也要相应的修改

	<div class="layui-side layui-side-menu">
        <div class="layui-side-scroll">
          <script type="text/html" template lay-url="https://easy-mock.com/mock/5c131015dada7b27ac3a5c36/titi/treemenu"
          lay-headers="{'x-auth-token': layui.data('layuiAdmin').token}"
          lay-done="layui.element.render('nav', 'layadmin-system-side-menu');" id="TPL_layout">
            
            <ul class="layui-nav layui-nav-tree" lay-shrink="all" id="LAY-system-side-menu" lay-filter="layadmin-system-side-menu">
              {{# 
                var path =  layui.router().path
                ,dataName = layui.setter.response.dataName;
                
                layui.each(d[dataName], function(index, item){ 
                  var hasChildren = typeof item.list === 'object' && item.list.length > 0
                  ,classSelected = function(){
                    if(index == 0){
                      return hasChildren ? 'layui-nav-itemed' : 'layui-this';
                    }
                    return '';
                  }
                  ,url = typeof item.href === 'string' ? item.href : item.name;
              }}
              <li data-name="{{ item.name || '' }}" data-jump="{{ item.href || '' }}" class="layui-nav-item {{ classSelected() }}">
                <a href="javascript:;" {{ hasChildren ? '' : 'lay-href="'+ url +'"' }} lay-tips="{{ item.title }}" lay-direction="2">
                  <i class="layui-icon {{ item.icon }}"></i>
                  <cite>{{ item.title }}</cite>
                </a>
                {{# if(hasChildren){ }} 
                  <dl class="layui-nav-child">
                  {{# layui.each(item.list, function(index2, item2){ 
                    var hasChildren2 = typeof item2.list == 'object' && item2.list.length > 0
                    ,classSelected2 = function(){
                      if(index==0){
                        return hasChildren2 ? 'layui-nav-itemed' : 'layui-this';
                      }
                      return '';
                    }
                    ,url2 = typeof item2.href === 'string' 
                      ? item2.href 
                    : [item.name, item2.name, ''].join('/');
                  }}
                    <dd  data-name="{{ item2.name || '' }}"  data-jump="{{ item2.href || '' }}" 
                    {{ classSelected2() ? ('class="'+ classSelected2() +'"') : '' }}>
                      <a href="javascript:;" {{ hasChildren2 ? '' : 'lay-href="'+ url2 +'"' }}>{{ item2.title }}</a>
                      {{# if(hasChildren2){ }}
                        <dl class="layui-nav-child">
                          {{# layui.each(item2.list, function(index3, item3){ 
                            var match = path[0] == item.name && path[1] == item2.name && path[2] == item3.name
                            ,url3 = typeof item3.href === 'string' 
                              ? item3.href 
                            : [item.name, item2.name, item3.name].join('/')
                          }}
                            <dd data-name="{{ item3.name || '' }}"  data-jump="{{ item3.href || '' }}" 
                            {{ match ? 'class="layui-this"' : '' }}>
                              <a href="javascript:;" lay-href="{{ url3 }}">{{ item3.title }}</a>
                            </dd>
                          {{# }); }}
                        </dl>
                      {{# } }}
                    </dd>
                  {{# }); }}
                </dl>
                {{# } }}
              </li>
              {{# }); }}
            </ul>
          </script>
        </div>
      </div>

2.后台返回的json格式（示例）：

{
  "code": 200,
  "data": [
    {
      "title": "主页",
      "icon": "layui-icon-home",
      "list": [
        {
        "title": "主页",
        "icon": "layui-icon-home",
        "href": "home/home.html"
        }
      ]
    },
    {
      "title": "系统管理",
      "icon": "layui-icon-senior",
      "list": [
        {
          "title": "部门管理",
          "href": "systemManage/branch.html"
        },
        {
          "title": "用户管理",
          "href": "systemManage/user.html",
          "list":[
		  	{
				"title": "用户管理1",
          		"href": "systemManage/user1.html",
			}
		  ]
        }
       ]
    }
  }

3.效果图