浅谈javascript中自定义模版

/**
* Created by Administrator on 15-1-19.
*/
function functionUtil() {
}
functionUtil = {
//某个DOM节点是否有某个属性
hasAttr: function (el, name) {
var attr = el.getAttributeNode && el.getAttributeNode(name);
return attr ? attr.specified : false
},
//根据class获取元素
getByClass: function (sClass, oParent) {
oParent = oParent || document;
if (!oParent.getElementsByClassName) {
return oParent.getElementsByClassName(sClass);
}
var arr = [];
var aEle = oParent.getElementsByTagName('*');
var reg = new RegExp('(^|\s)' + sClass + '(\s|$)');
//var reg = new RegExp('(^|[\x20\t\r\n\f])' + sClass + '([\x20\t\r\n\f]|$)');
for (var i = 0; i < aEle.length; i++) {
if (reg.test(aEle[i].className)) {
arr.push(aEle[i]);
}
}
return arr;
},
//动态添加样式表
addSheetFile: function (path) {
var fileref = document.createElement("link")
fileref.rel = "stylesheet";
fileref.type = "text/css";
fileref.href = path;
fileref.media = "screen";
var headobj = document.getElementsByTagName('head')[0];
headobj.appendChild(fileref);
},
//根据指定格式如 ${name} 绑定json数据
LoadJsonData: function (sParent, oJson) {
var oParent = document.getElementById(sParent);
if (oJson instanceof Array) {
var str = oParent.innerHTML;
for (var i = 0; i < oJson.length - 1; i++) {
oParent.innerHTML += str;
}
for (var d in oJson) {
oParent.children[d].innerHTML = oParent.children[d].innerHTML.replace(/${(w+)}/g, function (str, $1) {
return oJson[d][$1] ? oJson[d][$1] : '';
});
}
} else {
oParent.innerHTML = oParent.innerHTML.replace(/${(w+)}/g, function (str, $1) {
return oJson[$1] ? oJson[$1] : '';
});
}
},
//根据指定格式如<%……%>绑定json数据
TemplateEngine: function (html, options) {
html = html.replace(/(>)|(<)/g, function (str, $1, $2) {
switch (str) {
case $1:
return '>';
case $2:
return '<';
}
});
var re = /<%([^%>]+)?%>/g, reExp = /(^( )?(if|for|else|switch|case|break|{|}))(.*)?/g, code = 'var r=[];
', cursor = 0;
var add = function (line, js) {
js ? (code += line.match(reExp) ? line + '
' : 'r.push(' + line + ');
') :
(code += line != '' ? 'r.push("' + line.replace(/"/g, '\"') + '");
' : '');
return add;
}
while (match = re.exec(html)) {
add(html.slice(cursor, match.index))(match[1], true);
cursor = match.index + match[0].length;
}
add(html.substr(cursor, html.length - cursor));
code += 'return r.join("");';
return new Function(code.replace(/[
]/g, '')).apply(options);
}
}

1、第一种方式:${key}
functionUtil.LoadJsonData(element, data);
”html“代码：


<div id="data">
<div class="item">
姓名：${name}<br/>
年龄：${age}<br/>
职业：${job}<br/><br/>
</div>
</div>

javascript代码:


var data = [
{
name: '徐磊',
age: 24,
job: 'IT'
},
{
name: '李磊',
age: 23,
job: '翻译'
}
];


functionUtil.LoadJsonData('data', data);

执行结果:

2、第二种方式<% 代码 %>
functionUtil.TemplateEngine(string,Object);
"html"代码：


<div id="test3">
<%if(this.isShow){
for(var i in this.data){%>
<p href="#">姓名：<%this.data[i].name%></p>

<p href="#">年龄：<%this.data[i].age%></p>

<p href="#">工作：<%this.data[i].job%></p>
<br/>
<%}}%>
</div>

javascript代码：


var person = {
data: [
{
name: '徐磊',
age: 24,
job: 'IT'
},
{
name: '李磊',
age: 23,
job: '翻译'
}
],
isShow: true
}


document.getElementById("test3").innerHTML = functionUtil.TemplateEngine(document.getElementById("test3").innerHTML, person);

结果：

以上就是本文的全部内容了，小伙伴们看完是否对javascript模板有了新的认识了呢，希望大家能够喜欢。


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