//模板引擎的代码 (function () { //underscore抄的模板引擎; var escaper = /\\|'|\r|\n|\t|\u2028|\u2029/g; var escapes = { "'": "'", '\\': '\\', '\r': 'r', '\n': 'n', '\t': 't', '\u2028': 'u2028', '\u2029': 'u2029' }; $.templateSettings = { evaluate : /<%([\s\S]+?)%>/g, interpolate : /<%=([\s\S]+?)%>/g, escape : /<%-([\s\S]+?)%>/g } $.template = function(text, data, settings) { var render; settings = $.extend({}, settings, $.templateSettings); // Combine delimiters into one regular expression via alternation. var matcher = new RegExp([ (settings.escape || noMatch).source, (settings.interpolate || noMatch).source, (settings.evaluate || noMatch).source ].join('|') + '|$', 'g'); // Compile the template source, escaping string literals appropriately. var index = 0; var source = "__p+='"; text.replace(matcher, function(match, escape, interpolate, evaluate, offset) { source += text.slice(index, offset) .replace(escaper, function(match) { return '\\' + escapes[match]; }); if (escape) { source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'"; } if (interpolate) { source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'"; } if (evaluate) { source += "';\n" + evaluate + "\n__p+='"; } index = offset + match.length; return match; }); source += "';\n"; // If a variable is not specified, place data values in local scope. if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n'; source = "var __t,__p='',__j=Array.prototype.join," + "print=function(){__p+=__j.call(arguments,'');};\n" + source + "return __p;\n"; try { render = new Function(settings.variable || 'obj', '_', source); } catch (e) { e.source = source; throw e; } if (data) return render(data, _); var template = function(data) { return render.call(this, data); }; // Provide the compiled function source as a convenience for precompilation. template.source = 'function(' + (settings.variable || 'obj') + '){\n' + source + '}'; return template; }; })();
模板的使用的DEMO如下, 也可以参考官方的文档：：