JavaScript模板引擎使用

浏览数：19 / 时间：2015年06月08日

详细介绍参考 http://ejohn.org/blog/javascript-micro-templating/，这个模板引擎写得短小精悍，非常值得一看

1. [代码]tmpl.js

  
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    // Simple JavaScript Templating
  
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    // John Resig - http://ejohn.org/ - MIT Licensed
  
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    (function() {
  
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        var cache = {};
  
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        this.tmpl = function tmpl(str, data) {
  
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            // Figure out if we‘re getting a template, or if we need to
  
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            // load the template - and be sure to cache the result.
  
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            var fn =
  
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                !/\W/.test(str)
  
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                ?
  
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                cache[str] = cache[str] || tmpl(document.getElementById(str).innerHTML)
  
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                :
  
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                // Generate a reusable function that will serve as a template
  
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                // generator (and which will be cached).
  
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                new Function(
  
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                    "obj", "var p=[],print=function(){p.push.apply(p,arguments);};" +
  
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                    // Introduce the data as local variables using with(){}
  
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                    "with(obj){p.push(‘" +
  
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                    // Convert the template into pure JavaScript
  
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                    str
  
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                        .replace(/[\r\t\n]/g, " ")
  
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                        .split("<%").join("\t")
  
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                        .replace(/((^|%>)[^\t]*)‘/g, "$1\r")
  
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                        .replace(/\t=(.*?)%>/g, "‘,$1,‘")
  
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                        .split("\t")
  
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                        .join("‘);")
  
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                        .split("%>")
  
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                        .join("p.push(‘")
  
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                        .split("\r")
  
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                        .join("\\‘") +
  
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                    "‘);}return p.join(‘‘);"
  
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                );  // Function ends
  
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            // Provide some basic currying to the user
  
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            return data ? fn(data) : fn;
  
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        };
  
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    })();

2. [代码]index.html 跳至 [1] [2] [全屏预览]

  
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    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
  
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    "http://www.w3.org/TR/html4/loose.dtd">
  
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    <html xmlns="http://www.w3.org/1999/xhtml">
  
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        <head>
  
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            <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  
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            <title>JavaScript tmpl Use Demo</title>
  
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            <script type="text/javascript"src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
  
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            <script src="./tmpl.js" type="text/javascript"></script>
  
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                    <!-- 下面是模板user_tmpl -->
  
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            <script type="text/html" id="user_tmpl">
  
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                <% for ( var i = 0; i < users.length; i++ ) { %>
  
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                <li><a href="<%=users[i].url%>"><%=users[i].name%></a></li>
  
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                <% } %>
  
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            </script>
  
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            <script type="text/javascript">
  
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                            // 用来填充模板的数据
  
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                var users = [
  
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                    { url: "http://baidu.com", name: "jxq"},
  
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                    { url: "http://google.com", name: "william"}
  
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                ];
  
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                $(function() {
  
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                                   // 调用模板引擎函数将数据填充到模板获得最终内容
  
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                    $("#myUl").html(tmpl("user_tmpl", users));
  
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                });
  
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            </script>
  
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        </head>
  
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        <body>
  
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            <div>
  
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                <ul id="myUl">
  
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                </ul>
  
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            </div>
  
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        </body>
  
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    </html>