javascript——浅谈Javascript模版（自定义）

 1 /** 2  * Created by Administrator on 15-1-19. 3  */ 4 function functionUtil() { 5  6 } 7  8 functionUtil = { 9     //某个DOM节点是否有某个属性10     hasAttr: function (el, name) {11         var attr = el.getAttributeNode && el.getAttributeNode(name);12         return attr ? attr.specified : false13     },14     //根据class获取元素15     getByClass: function (sClass, oParent) {16         oParent = oParent || document;17         if (!oParent.getElementsByClassName) {18             return oParent.getElementsByClassName(sClass);19         }20         var arr = [];21         var aEle = oParent.getElementsByTagName('*');22         var reg = new RegExp('(^|//s)' + sClass + '(//s|$)');23         //var reg = new RegExp('(^|[//x20//t//r//n//f])' + sClass + '([//x20//t//r//n//f]|$)');24         for (var i = 0; i < aEle.length; i++) {25             if (reg.test(aEle[i].className)) {26                 arr.push(aEle[i]);27             }28         }29         return arr;30     },31     //动态添加样式表32     addSheetFile: function (path) {33         var fileref = document.createElement("link")34         fileref.rel = "stylesheet";35         fileref.type = "text/CSS";36         fileref.href = path;37         fileref.media = "screen";38         var headobj = document.getElementsByTagName('head')[0];39         headobj.appendChild(fileref);40     },41     //根据指定格式如 ${name} 绑定json数据42     LoadJsonData: function (sParent, oJson) {43         var oParent = document.getElementById(sParent);44         if (oJson instanceof Array) {45             var str = oParent.innerHTML;46             for (var i = 0; i < oJson.length - 1; i++) {47                 oParent.innerHTML += str;48             }49             for (var d in oJson) {50                 oParent.children[d].innerHTML = oParent.children[d].innerHTML.replace(//$/{(/w+)/}/g, function (str, $1) {51                     return oJson[d][$1] ? oJson[d][$1] : '';52                 });53             }54 55         } else {56             oParent.innerHTML = oParent.innerHTML.replace(//$/{(/w+)/}/g, function (str, $1) {57                 return oJson[$1] ? oJson[$1] : '';58             });59         }60     },61     //根据指定格式如<%……%>绑定json数据62     TemplateEngine: function (html, options) {63         html = html.replace(/(&gt;)|(&lt;)/g, function (str, $1, $2) {64             switch (str) {65                 case $1:66                     return '>';67                 case $2:68                     return '<';69             }70         });71         var re = /<%([^%>]+)?%>/g, reExp = /(^( )?(if|for|else|switch|case|break|{|}))(.*)?/g, code = 'var r=[];/n', cursor = 0;72         var add = function (line, js) {73             js ? (code += line.match(reExp) ? line + '/n' : 'r.push(' + line + ');/n') :74                 (code += line != '' ? 'r.push("' + line.replace(/"/g, '//"') + '");/n' : '');75             return add;76         }77         while (match = re.exec(html)) {78             add(html.slice(cursor, match.index))(match[1], true);79             cursor = match.index + match[0].length;80         }81         add(html.substr(cursor, html.length - cursor));82         code += 'return r.join("");';83         return new Function(code.replace(/[/r/t/n]/g, '')).apply(options);84     }85 }

1、第一种方式:${key}

functionUtil.LoadJsonData(element, data);

”html“代码：

1 <div id="data">2     <div class="item">3         姓名：${name}<br/>4         年龄：${age}<br/>5         职业：${job}<br/><br/>6     </div>7 </div>

javascript代码:

 1 var data = [ 2            { 3                     name: '徐磊', 4                     age: 24, 5                     job: 'IT' 6                 }, 7                 { 8                     name: '李磊', 9                     age: 23,10                     job: '翻译'11                 }12     ];13 14 15 functionUtil.LoadJsonData('data', data);    

执行结果:

2、第二种方式<% 代码 %>

functionUtil.TemplateEngine(string,Object);

"html"代码：

 1 <div id="test3"> 2     <%if(this.isShow){ 3       for(var i in this.data){%> 4         <p href="#">姓名：<%this.data[i].name%></p> 5  6         <p href="#">年龄：<%this.data[i].age%></p> 7  8         <p href="#">工作：<%this.data[i].job%></p> 9         <br/>10     <%}}%>11 </div>

javascript代码：

 1 var person = { 2                 data: [ 3                     { 4                         name: '徐磊', 5                         age: 24, 6                         job: 'IT' 7                     }, 8                     { 9                         name: '李磊',10                         age: 23,11                         job: '翻译'12                     }13                 ],14                 isShow: true15             }16 17 18    document.getElementById("test3").innerHTML = functionUtil.TemplateEngine(document.getElementById("test3").innerHTML, person);

结果：

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