Mustache.js语法学习笔记
看了Mustache的github,学学其中的语法,做个笔记
1.简单的变量替换:{{name}}
1 var data = { "name": "Willy" }; 2 Mustache.render("{{name}} is awesome.",data);
返回结果 Willy is awesome.
2.如果变量含有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);
结果:<br>Willy<br> is awesome.
去掉"&"的结果是转义为:<br>Willy<br> is awesome.(默认将"<"和">"转义)
3.如果是对象,还能解释其属性
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);
结果:name:Chen Jackson,age:18
4.{{#param}}这个标签很强大,有if判断、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);
如果nothin是空或者null,或者是false都会输出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.如果迭代的是数组,还可以用{{.}}来替代每个元素
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.迭代输出的还可以是一个function返回的结果,function可以读取当前变量的上下文来获取其他属性执行其他操作
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:方法里面可以再执行变量中的表达式
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);
输出结果:
9.{{^}}与{{#}}相反,如果变量是null、undefined、
false、和空数组讲输出结果
10.{{! }}注释