模板渲染引擎

 var template = (function () {
            /*  Simple JavaScript Templating
             John Resig - http://ejohn.org/ - MIT Licensed */
            var cache = {};
            return tmpl = function (str, data) {
                /* Figure out if we're getting a template, or if we need to */
                /* load the template - and be sure to cache the result. */
                var fn = !/W/.test(str) ? cache[str] = cache[str] || tmpl(document.getElementById(str).innerHTML) :

                    /* Generate a reusable function that will serve as a template */
                    /*  generator (and which will be cached). */
                        new Function("obj", "var p=[],print=function(){p.push.apply(p,arguments);};" +

                                    /* Introduce the data as local variables using with(){} */
                                "with(obj){p.push('" +

                                    /* Convert the template into pure JavaScript */
                                    /* modified by yiguo .for extension function */
                                str.replace(/[
	
]/g, " ").split("<%").join("	").replace(/((^|%>)[^	]*)'/g, "$1
").replace(/	=(.*?)%>/g, function (a, b, c) {
                                    var arr = b.split("|");
                                    if (arr.length > 1) {
                                        b = "tmpl.fns['" + arr[1] + "' ](" + arr[0] + ",'" + arr[2] + "')";
                                    }
                                    return "'," + b + ",'";

                                }).split("	").join("');").split("%>").join("p.push('").split("
").join("\'") + "');}return p.join('');");

                /* Provide some basic currying to the user*/
                return data ? fn(data) : fn;
            };
        })();