/** * Created by Administrator on 15-1-19. */function functionUtil() {}functionUtil = { //Does a DOM node have a certain attribute hasAttr: function (el, name) { var attr = el.getAttributeNode && el.getAttributeNode(name); return attr ? attr.specified : false }, //Get the element according to class 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; }, // Dynamically add stylesheet 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); }, //Bind json data according to the specified format such as ${name} LoadJsonData: function (sParent, oJson) { var oParent = document.getElementById(sParent); if (oJson instance of Array) { var str = oParent.innerHTML; for (var i = 0; i < oJson.length - 1; i++) { oParent.innerHTML += str; } for (var d in oJson) { oParent.children[d].innerHTML = oParent.children[d].innerHTML.replace(//$/{(/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] : ''; }); } }, //Bind json data according to the specified format such as <%...%>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=[];/n', cursor = 0; var add = function (line, js) { js ? (code += line.match(reExp) ? line + '/n' : 'r.push(' + line + ');/n') : (code += line != '' ? 'r.push("' + line.replace(/"/g, '//"') + '");/n' : ''); 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(/[/r/t/n]/g, '')).apply(options); }}1. The first method: ${key}
functionUtil.LoadJsonData(element, data);
"html" code:
<div id="data"> <div> Name: ${name}<br/> Age: ${age}<br/> Occupation: ${job}<br/><br/> </div></div>javascript code:
var data = [ { name: 'Xu Lei', age: 24, job: 'IT' }, { name: 'Li Lei', age: 23, job: 'Translation' } ];functionUtil.LoadJsonData('data', data);Execution results:
2. The second method <% code %>
functionUtil.TemplateEngine(string,Object);
"html" code:
<div id="test3"> <%if(this.isShow){ for(var i in this.data){%> <p href="#">Name: <%this.data[i].name%></p> <p href="#">Age: <%this.data[i].age%></p> <p href="#">Work: <%this.data[i].job%></p> <br/> <%}}%></div>javascript code:
var person = { data: [ { name: 'Xu Lei', age: 24, job: 'IT' }, { name: 'Li Lei', age: 23, job: 'Translation' } ], isShow: true } document.getElementById("test3").innerHTML = functionUtil.TemplateEngine(document.getElementById("test3").innerHTML, person);result:
The above is the entire content of this article. Have you gained a new understanding of JavaScript templates after reading it? I hope you can like it.