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微信小程序入门——Mustache语法学习

微信小程序中用到了大量Mustache语法,特发此文学习一下

 

1.简单的变量调换:{{name}}

 


1 var data = http://www.mamicode.com/{"name": "Willy" };
2 Mustache.render("{{name}} is awesome.",data);

 

返回成果 Willy is awesome.

 

2.若是变量含有html的代码的,例如:<br>、<tr>等等而不想转义可以在用{{&name}}

 


1 var data = http://www.mamicode.com/{>2             "name" : "<br>Willy<br>"
3 };
4 var output = Mustache.render("{{&name}} is awesome.", data);
5 console.log(output);

 

成果:<br>Willy<br> is awesome.

 

去掉"&"的成果是转义为:&lt;br&gt;Willy&lt;br&gt; is awesome.(默认将"<"和">"转义)

 

3.若是是对象,还能申明其属性

 


 1 var data = http://www.mamicode.com/{> 2             "name" : {
3 "first" : "Chen",
4 "last" : "Jackson"
5 },
6 "age" : 18
7 };
8 var output = Mustache.render(
9 "name:{{name.first}} {{name.last}},age:{{age}}", data);
10 console.log(output);

 

成果:name:Chen Jackson,age:18

 

4.{{#param}}这个标签很强大,有if断定、forEach的功能。

 

 

 


1 var data = http://www.mamicode.com/{>2                 "nothin":true
3 };
4 var output = Mustache.render(
5 "Shown.{{#nothin}}Never shown!{{/nothin}}", data);
6 console.log(output);

 

若是nothin是空或者null,或者是false都邑输出Shown.相反则是Shown.Never shown!。

 

5.迭代

 


 1 var data = http://www.mamicode.com/{> 2             "stooges" : [ {
3 "name" : "Moe"
4 }, {
5 "name" : "Larry"
6 }, {
7 "name" : "Curly"
8 } ]
9 };
10 var output = Mustache.render("{{#stooges}}<b>{{name}}</b>{{/stooges}}",
11 data);
12 console.log(output);

 

输出:<b>Moe</b>

 

        <b>Larry</b>

 

        <b>Curly</b>

 

6.若是迭代的是数组,还可以用{{.}}来调换每个元素

 


1 var data = http://www.mamicode.com/{>2             "musketeers" : [ "Athos", "Aramis", "Porthos", "D""Artagnan" ]
3 };
4 var output = Mustache.render("{{#musketeers}}* {{&.}}{{/musketeers}}",
5 data);
6 console.log(output);

 

输出:* Athos

 

        * Aramis

 

        * Porthos

 

        * D""Artagnan

 

7.迭代输出的还可所以一个function返回的成果,function可以读取当前变量的高低文来获取其他属性履行其他操纵

 


 1 var data = http://www.mamicode.com/{> 2             "beatles" : [ {
3 "firstName" : "John",
4 "lastName" : "Lennon"
5 }, {
6 "firstName" : "Paul",
7 "lastName" : "McCartney"
8 }, {
9 "firstName" : "George",
10 "lastName" : "Harrison"
11 }, {
12 "firstName" : "Ringo",
13 "lastName" : "Starr"
14 } ],
15 "name" : function() {
16 return this.firstName + " " + this.lastName;
17 }
18 };
19 var output = Mustache
20 .render("{{#beatles}} *{{name}}{{/beatles}}", data);
21 console.log(output);

 

输出: *John Lennon

 

         *Paul McCartney

 

         *George Harrison

 

         *Ringo Starr

 

8:办法里面可以再履行变量中的表达式

 


 1 var data = http://www.mamicode.com/{> 2             "name" : "{{age}}" + "Tater",
3 "bold" : function() {
4 return function(text, render) {
5 console.log(text);
6 return "<b>" + render(text) + "</b>";
7 };
8 },
9 "age" : 18
10 };
11 var output = Mustache.render("{{#bold}}Hi {{name}}.{{/bold}}", data);
12 console.log(output);

 

输出成果:

 

Hi {{age}}Tater.

 

<b>Hi 18Tater.</b>

 

9.{{^}}与{{#}}相反,若是变量是null、undefined、 false、和空数组讲输出成果

 

10.{{!  }}注释

 

微信小程序入门——Mustache语法学习