• underscore中template的使用Demo


    在客户端渲染数据时,一般可通过underscore中的template对数据模板进行渲染,例如:

    定义模板,需要把type类型设置为“text/template”

    <script type="text/template" id="tpl">
    <% _.each(data, function (item) { %>
      <div class="outer">
        <%= item.title %> - <%= item.url %> - <%= item.film %>
      </div>
    <% }); %>
    </script>

    在js调用模板的时候,传入模板数据,例如:

    var datas = [
      {
        title: '标题1',
        url: 'http://www.baidu.com',
        film: '电影名称1'
      },
      {
        title: '标题2',
        url: 'http://www.baidu.com',
        film: '电影名称2'
      },
      {
        title: '标题3',
        url: 'http://www.baidu.com',
        film: '电影名称3'
      },
      {
        title: '标题4',
        url: 'http://www.baidu.com',
        film: '电影名称4'
      },
      {
        title: '标题5',
        url: 'http://www.baidu.com',
        film: '电影名称5'
      }
      ,
      {
        title: '标题6666',
        url: 'http://www.baidu.com',
        film: '电影名称5'
      }
    ];
    
    var t=_.template($("#tpl").html());
    $('#content').html(t({"data":datas}));  //这里把模板中的数据源取别名为data,则模板中的数据源也用这个别名,与此保持一致

    例如:根据拼音首字母对城市进行分组,代码如下:

    首先数据源文件city.js中的数据格式如下;

    {"status":0,"msg":"","data":[{"cityId":340800,"cityName":"u5b89u5e86u5e02","cityPinYin":"anqingshi"},{"cityId":210300,"cityName":"u978du5c71u5e02","cityPinYin":"anshanshi"},{"cityId":410500,"cityName":"u5b89u9633u5e02","cityPinYin":"anyangshi"},{"cityId":340300,"cityName":"u868cu57e0u5e02","cityPinYin":"bangbushi"},{"cityId":130600,"cityName":"u4fddu5b9au5e02","cityPinYin":"baodingshi"},{"cityId":110100,"cityName":"u5317u4eacu5e02","cityPinYin":"beijingshi"},{"cityId":530500,"cityName":"u4fddu5c71u5e02","cityPinYin":"baoshanshi"},{"cityId":150200,"cityName":"u5305u5934u5e02","cityPinYin":"baotoushi"},{"cityId":341600,"cityName":"u4eb3u5ddeu5e02","cityPinYin":"bozhoushi"},{"cityId":220100,"cityName":"u957fu6625u5e02","cityPinYin":"changchunshi"},{"cityId":430700,"cityName":"u5e38u5fb7u5e02","cityPinYin":"changdeshi"},{"cityId":510100,"cityName":"u6210u90fdu5e02","cityPinYin":"chengdoushi"},{"cityId":150400,"cityName":"u8d64u5cf0u5e02","cityPinYin":"chifengshi"},{"cityId":500100,"cityName":"u91cdu5e86u5e02","cityPinYin":"chongqingshi"},{"cityId":430100,"cityName":"u957fu6c99u5e02","cityPinYin":"changshashi"},{"cityId":130900,"cityName":"u6ca7u5ddeu5e02","cityPinYin":"cangzhoushi"},{"cityId":320400,"cityName":"u5e38u5ddeu5e02","cityPinYin":"changzhoushi"},{"cityId":431000,"cityName":"u90f4u5ddeu5e02","cityPinYin":"chenzhoushi"},{"cityId":210600,"cityName":"u4e39u4e1cu5e02","cityPinYin":"dandongshi"},{"cityId":441900,"cityName":"u4e1cu839eu5e02","cityPinYin":"dongguanshi"},{"cityId":210200,"cityName":"u5927u8fdeu5e02","cityPinYin":"dalianshi"},{"cityId":230600,"cityName":"u5927u5e86u5e02","cityPinYin":"daqingshi"},{"cityId":370500,"cityName":"u4e1cu8425u5e02","cityPinYin":"dongyingshi"},{"cityId":371400,"cityName":"u5fb7u5ddeu5e02","cityPinYin":"dezhoushi"},{"cityId":440600,"cityName":"u4f5bu5c71u5e02","cityPinYin":"foshanshi"},{"cityId":210400,"cityName":"u629au987au5e02","cityPinYin":"fushunshi"},{"cityId":341200,"cityName":"u961cu9633u5e02","cityPinYin":"fuyangshi"},{"cityId":361000,"cityName":"u629au5ddeu5e02","cityPinYin":"fuzhoushi"},{"cityId":350100,"cityName":"u798fu5ddeu5e02","cityPinYin":"fuzhoushi"},{"cityId":450300,"cityName":"u6842u6797u5e02","cityPinYin":"guilinshi"},{"cityId":510800,"cityName":"u5e7fu5143u5e02","cityPinYin":"guangyuanshi"},{"cityId":640400,"cityName":"u56fau539fu5e02","cityPinYin":"guyuanshi"},{"cityId":440100,"cityName":"u5e7fu5ddeu5e02","cityPinYin":"guangzhoushi"},{"cityId":360700,"cityName":"u8d63u5ddeu5e02","cityPinYin":"ganzhoushi"},{"cityId":320800,"cityName":"u6deeu5b89u5e02","cityPinYin":"huaianshi"},{"cityId":130400,"cityName":"u90afu90f8u5e02","cityPinYin":"handanshi"},{"cityId":230100,"cityName":"u54c8u5c14u6ee8u5e02","cityPinYin":"haerbinshi"},{"cityId":340100,"cityName":"u5408u80a5u5e02","cityPinYin":"hefeishi"},{"cityId":150100,"cityName":"u547cu548cu6d69u7279u5e02","cityPinYin":"huhehaoteshi"},{"cityId":431200,"cityName":"u6000u5316u5e02","cityPinYin":"huaihuashi"},{"cityId":150700,"cityName":"u547cu4f26u8d1du5c14u5e02","cityPinYin":"hulunbeiershi"},{"cityId":420200,"cityName":"u9ec4u77f3u5e02","cityPinYin":"huangshishi"},{"cityId":430400,"cityName":"u8861u9633u5e02","cityPinYin":"hengyangshi"},{"cityId":330500,"cityName":"u6e56u5ddeu5e02","cityPinYin":"huzhoushi"},{"cityId":330100,"cityName":"u676du5ddeu5e02","cityPinYin":"hangzhoushi"},{"cityId":441300,"cityName":"u60e0u5ddeu5e02","cityPinYin":"huizhoushi"},{"cityId":360800,"cityName":"u5409u5b89u5e02","cityPinYin":"jianshi"},{"cityId":330700,"cityName":"u91d1u534eu5e02","cityPinYin":"jinhuashi"},{"cityId":440700,"cityName":"u6c5fu95e8u5e02","cityPinYin":"jiangmenshi"},{"cityId":230800,"cityName":"u4f73u6728u65afu5e02","cityPinYin":"jiamusishi"},{"cityId":370800,"cityName":"u6d4eu5b81u5e02","cityPinYin":"jiningshi"},{"cityId":370100,"cityName":"u6d4eu5357u5e02","cityPinYin":"jinanshi"},{"cityId":330400,"cityName":"u5609u5174u5e02","cityPinYin":"jiaxingshi"},{"cityId":445200,"cityName":"u63edu9633u5e02","cityPinYin":"jieyangshi"},{"cityId":210700,"cityName":"u9526u5ddeu5e02","cityPinYin":"jinzhoushi"},{"cityId":421000,"cityName":"u8346u5ddeu5e02","cityPinYin":"jingzhoushi"},{"cityId":410200,"cityName":"u5f00u5c01u5e02","cityPinYin":"kaifengshi"},{"cityId":530100,"cityName":"u6606u660eu5e02","cityPinYin":"kunmingshi"},{"cityId":131000,"cityName":"u5ecau574au5e02","cityPinYin":"langfangshi"},{"cityId":411100,"cityName":"u6f2fu6cb3u5e02","cityPinYin":"luoheshi"},{"cityId":320700,"cityName":"u8fdeu4e91u6e2fu5e02","cityPinYin":"lianyungangshi"},{"cityId":350800,"cityName":"u9f99u5ca9u5e02","cityPinYin":"longyanshi"},{"cityId":410300,"cityName":"u6d1bu9633u5e02","cityPinYin":"luoyangshi"},{"cityId":620100,"cityName":"u5170u5ddeu5e02","cityPinYin":"lanzhoushi"},{"cityId":450200,"cityName":"u67f3u5ddeu5e02","cityPinYin":"liuzhoushi"},{"cityId":340500,"cityName":"u9a6cu978du5c71u5e02","cityPinYin":"maanshanshi"},{"cityId":440900,"cityName":"u8302u540du5e02","cityPinYin":"maomingshi"},{"cityId":510700,"cityName":"u7ef5u963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    View Code

    js请求数据组装数据:

     var isTest = (window.location.href.indexOf('localhost') >0 || window.location.href.indexOf('127.0.0.1') >0);
        var url = isTest ? './data/city.js' : '真实url';
        var cityMap={};
        $.ajax({
            type:"Get",
            url:url,
            timeout:5000,
            data:"",
            success:function(result){
                if(isTest){
                    result=JSON.parse(result);
                }
                //alert(result.data);
               if(result.data && result.data.length>0){
                       $.each(result.data,function(i,item){
                           var firstChar=item.cityPinYin.charAt(0).toUpperCase();
                           cityMap[firstChar]=cityMap[firstChar]?cityMap[firstChar]:[];
                           cityMap[firstChar].push({
                               cityId:item.cityId,
                               cityName:item.cityName
                           });
                       });
                      
                    //获得模板
                    var lettTemp=_.template($("#letterList").html());
                    var cityTemp=_.template($("#cityList").html());
     
                   //渲染模板
                  $("#fixedNav").html(lettTemp({"data":cityMap}));
                   $("#contentList").append(cityTemp({"data":cityMap}));
    
                    // $.each(cityMap,function(key,item){
                    //    console.log("key="+key);
                    //    $.each(item,function(i,city){
                    //       console.log("cityName="+city.cityName);
                    //    })
                    // });
                    // console.log(cityMap);
                   
               }
            }
    
        })

    模板:

    <script type="text/template" id="letterList">
          <a href="javascript:;" style="line-height: 27.2727px;" class="">*</a>
          <%_.each(data,function(value,index,obj){%>
              <a href="javascript:void(0)" class="ng-binding ng-scope" style="line-height: 27.2727px;" data-id="<%=index%>"><%=index%></a>
          <%})%>
    </script>

    <script type="text/template" id="cityList"> <%_.each(data,function(cityList,index){%> <div class="ng-scope"> <dt class="ng-binding" id="<%=index%>"> <%=index%> </dt> <%_.each(cityList,function(item,index){%> <dd class="ng-binding ng-scope" data-id="<%=item.cityId%>"><%=item.cityName%></dd> <%})%> </div> <%})%> </script>

    备注:

    例如如上模板渲染中的_.each方法,此方法中第一个参数为value值,第二个参数为index值,区别与jquery中的$.each方法

    具体此方法的用法请参考官方文档

    以及:http://blog.itrunc.com/2014/04/29/underscore-each/

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  • 原文地址:https://www.cnblogs.com/alice626/p/5518489.html
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