微信小程序入门——Mustache语法学习

it2022-05-09  33

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 = { "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 = { 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:<br>Willy<br> is awesome.(默认将"<"和">"转义)

 

3.若是是对象,还能申明其属性

 

1 var data = { 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 = { 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 = { 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 = { 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 = { 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 = { 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

 

转载于:https://www.cnblogs.com/tuyile006/p/6269746.html

相关资源:数据结构—成绩单生成器

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