Mustache.js语法学习笔记

时间:2022-04-22 18:26:21

原文地址:http://www.cnblogs.com/flypig88/archive/2012/05/14/2497780.html

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:&lt;br&gt;Willy&lt;br&gt; is awesome.(默认将"<"和">"转义)

3.如果是对象,还能解释其属性

Mustache.js语法学习笔记
 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);
Mustache.js语法学习笔记

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

Mustache.js语法学习笔记
 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);
Mustache.js语法学习笔记

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

Mustache.js语法学习笔记
 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);
Mustache.js语法学习笔记

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

Mustache.js语法学习笔记
 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);
Mustache.js语法学习笔记

输出结果:

Hi {{age}}Tater.
<b>Hi 18Tater.</b>

9.{{^}}与{{#}}相反,如果变量是null、undefined、 false、和空数组讲输出结果

10.{{!  }}注释