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doT.js模板引擎

    最近，我爱模板网在做H5+手机APP，调取接口数据并显示出来的时候，经常要用到显示大量的数据到页面中。js字符串拼接太麻烦，用vue.js等又有点大材小用。百度找到了今天的主角：doT.js。(点击下载：doT.js)
    doT.js是一款优秀js模板引擎。它的特点是快，小，无依赖其他插件。压缩版仅有4K大小，下面我们就简单的用用它：

doT.js常见用法： 
{{= }} for interpolation
{{ }} for evaluation
{{~ }} for array iteration
{{? }} for conditionals
{{! }} for interpolation with encoding
{{# }} for compile-time evaluation/includes and partials
{{## #}} for compile-time defines
调用方式： 
var tmpText = doT.template(模板);
tmpText(数据源);

例子一：for interpolation 赋值

格式： 
{{= }}
数据源： 
{"name":"Jake","age":31}
区域: 
<div id="interpolation"></div>
模板： 
<script id="interpolationtmpl" type="text/x-dot-template">
    <div>Hi {{=it.name}}!</div>
    <div>{{=it.age || ''}}</div>
</script>
调用方式： 
var dataInter = {"name":"Jake","age":31};
var interText = doT.template($("#interpolationtmpl").text());
$("#interpolation").html(interText(dataInter));

例子二：for evaluation for in 循环

格式： 
{{ for var key in data { }} 
{{= key }} 
{{ } }}
数据源： 
{"name":"Jake","age":31,"interests":["basketball","hockey","photography"],"contact":{"email":"jake@xyz.com","phone":"999999999"}}
区域： 
<div id="evaluation"></div>
模板： 
<script id="evaluationtmpl" type="text/x-dot-template">
    {{ for(var prop in it) { }}
        <div>KEY:{{= prop }}---VALUE:{{= it[prop] }}</div>
    {{ } }}
</script>
调用方式： 
var dataEval = {"name":"Jake","age":31,"interests":["basketball","hockey","photography"],"contact":{"email":"jake@xyz.com","phone":"999999999"}};
var evalText = doT.template($("#evaluationtmpl").text());
$("#evaluation").html(evalText(dataEval));

例子三：for array iteration 数组

格式： 
{{~data.array :value:index }}
    ...
{{~}}
数据源: 
{"array":["banana","apple","orange"]}
区域： 
<div id="arrays"></div>
模板： 
<script id="arraystmpl" type="text/x-dot-template">
    {{~it.array:value:index}}
        <div>{{= index+1 }}{{= value }}!</div>
    {{~}}
</script>
调用方式： 
var dataArr = {"array":["banana","apple","orange"]};
var arrText = doT.template($("#arraystmpl").text());
$("#arrays").html(arrText(dataArr));

例子四：{{? }} for conditionals 条件

格式： 
{{? }} if
{{?? }} else if
{{??}} else
数据源： 
{"name":"Jake","age":31}
区域： 
<div id="condition"></div>
模板： 
<script id="conditionstmpl" type="text/x-dot-template">
    {{? !it.name }}
    <div>Oh, I love your name, {{=it.name}}!</div>
    {{?? !it.age === 0}}
    <div>Guess nobody named you yet!</div>
    {{??}}
    You are {{=it.age}} and still dont have a name?
    {{?}}
</script>
调用方式： 
var dataEncode = {"uri":"http://jq22.com/?keywords=Yoga","html":"<div style='background: #f00; height: 30px; line-height: 30px;'>html元素</div>"};
var EncodeText = doT.template($("#encodetmpl").text());
$("#encode").html(EncodeText(dataEncode));

例子五：for interpolation with encoding

数据源： 
{"uri":"http://www.5imoban.net"}
格式： 
{{!it.uri}}
区域： 
<div id="encode"></div>
模板： 
<script id="encodetmpl" type="text/x-dot-template">
    Visit {{!it.uri}} {{!it.html}}
</script>
调用方式： 
var dataEncode = {"uri":"http://jq22.com/?keywords=Yoga","html":"<div style='background: #f00; height: 30px; line-height: 30px;'>html元素</div>"};
var EncodeText = doT.template($("#encodetmpl").text());
$("#encode").html(EncodeText(dataEncode));

例子六：
{{# }} for compile-time evaluation/includes and partials
{{## #}} for compile-time defines

数据源： 
{"name":"Jake","age":31}
区域： 
<div id="part"></div>
模板： 
<script id="parttmpl" type="text/x-dot-template">
    {{##def.snippet:
    <div>{{=it.name}}</div>{{#def.joke}}
    #}}
    {{#def.snippet}}
    {{=it.html}}
</script>
调用方式： 
var dataPart = {"name":"Jake","age":31,"html":"<div style='background: #f00; height: 30px; line-height: 30px;'>html元素</div>"};
var defPart = {"joke":"<div>{{=it.name}} who?</div>"};
var partText = doT.template($("#parttmpl").text(), undefined, defPart);
$("#part").html(partText(dataPart));

TAGS: doT.js