微信小程序中用到了大量Mustache語法,特發此文學習一下
1.簡單的變量調換:{{name}}
1 var data = { "name": "Willy" };
2 Mustache.render("{{name}} is awesome.",data);
返回成果 Willy is awesome.
2.若是變量含有html的代碼的,例如:<br>、<tr>等等而不想轉義可以在用{{&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"&"的成果是轉義為:<br>Willy<br> is awesome.(默認將"<"和">"轉義)
3.若是是對象,還能申明其屬性
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}}這個標簽很強大,有if斷定、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都邑輸出Shown.相反則是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);
輸出:<b>Moe</b>
<b>Larry</b>
<b>Curly</b>
6.若是迭代的是數組,還可以用{{.}}來調換每個元素
1 var data = {
2 "musketeers" : [ "Athos", "Aramis", "Porthos", "D""Artagnan" ]
3 };
4 var output = Mustache.render("{{#musketeers}}* {{&.}}{{/musketeers}}",
5 data);
6 console.log(output);
輸出:* Athos
* Aramis
* Porthos
* D""Artagnan
7.迭代輸出的還可所以一個function返回的成果,function可以讀取當前變量的高低文來獲取其他屬性履行其他操縱
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);
輸出: *John Lennon
*Paul McCartney
*George Harrison
*Ringo Starr
8:辦法里面可以再履行變量中的表達式
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);
輸出成果:
9.{{^}}與{{#}}相反,若是變量是null、undefined、
false、和空數組講輸出成果
10.{{! }}注釋
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