利用js将ajax获取到的后台数据动态加载至网页中的方法

<script>jQuery(function($) {/**********获取未处理报警信息总数**************/var result;$.ajax({async:false,cache:false,url: "alarm_findPageAlarm.do",//访问后台接口取数据// dataType : "json",type: 'POST',success: function(data){result = eval('('+ data +')');}});var alarmCount;alarmCount = result.total;/**********静态代码形式**********//* <li><a href="#" rel="external nofollow" class="dropdown-toggle"><i class="icon-desktop"></i><span class="menu-text"> 设备管理 </span><b class="arrow icon-angle-down"></b></a><ul class="submenu"><li><a href="smartTerminal.html" rel="external nofollow" ><i class="icon-double-angle-right"></i>智能终端管理</a></li><li><a href="labelPrinter.html" rel="external nofollow" ><i class="icon-double-angle-right"></i>标签打印机管理</a></li></ul></li>*//*****从后台取出导航栏数据******/$.ajax({async:true,cache:false,url: "user_getMenuBuf.do",// dataType : "json",type: 'POST',success: function(result){var result = eval('('+ result +')');if(result != undefined && result.length > 0){var firstMenu = [];var firstHref = [];var firstIcon = [];var subMenu = [];/******一级导航栏数据*******/for (var i = 0; i < result.length; i++){firstMenu[i] = result[i].name;firstHref[i] = result[i].url;firstIcon[i] = result[i].iconCls;/*******添加li标签********/var menuInfo = document.getElementById("menuInfo");var firstLi = document.createElement("li");//创建新的 li元素menuInfo.appendChild(firstLi);//将此li元素添加至页面的ul下一级中firstLi.style.borderBottom = "0px solid #CCEBF8";//设置li下边框样式/******设置选中li、离开li时li的样式********/firstLi.onmouseover = function(){this.style.background = "#23ACFA";};/* firstLi.onmouseover = function(){this.style.background = "#23ACFA";}; */firstLi.onmouseout=function(){this.style.background = "#0477C0";};/******添加a标签**********/var firstALabel = document.createElement("a");firstALabel.setAttribute("href", firstHref[i]);//js为新添加的a元素动态设置href属性firstALabel.setAttribute("class", "dropdown-toggle");//firstALabel.className = "dropdown-toggle";//兼容性好firstALabel.setAttribute("target", "content");//firstALabel.style.backgroundImage="url(./img/17.jpg)"firstALabel.style.background = "#0477C0";//js为新添加的a元素动态设置背景颜色// background:url(./img/17.jpg);firstALabel.style.marginLeft = "20px";//js为新添加的a元素动态设置左外边距firstLi.appendChild(firstALabel);firstALabel.onmouseover = function(){this.style.background = "#23ACFA";};/* firstALabel.onmouseover = function(){this.style.background = "#23ACFA";}; */firstALabel.onmouseout=function(){this.style.background = "#0477C0";};/*******添加i标签*******/var firstILavel = document.createElement("i");firstILavel.setAttribute("class", firstIcon[i]);firstILavel.style.color = "#F4F8FF";//动态设置i元素的颜色firstALabel.appendChild(firstILavel);/*********添加span标签**********/var firstSpan = document.createElement("span");firstSpan.className = "menu-text";firstSpan.innerHTML = firstMenu[i];//js为新添加的span元素动态设置显示内容firstSpan.style.fontSize = "14.5px";//js为新添加的span元素动态设置显示内容的字体大小firstSpan.style.color = "#66D2F1";//js为新添加的span元素动态设置显示内容的字体颜色firstSpan.style.marginLeft = "15px";firstALabel.appendChild(firstSpan);if (firstMenu[i] == "报警信息管理"){var alarmIcon = document.createElement("span");alarmIcon.className = "badge badge-important";alarmIcon.innerHTML = alarmCount; //alarmCount为全局变量，且是通过ajax从后台获取到的firstSpan.appendChild(alarmIcon);}if (result[i].children.length > 0){var secondHref = [];var secondMenu = [];var secondIcon = [];/*******添加b标签********/var firstBLabel = document.createElement("b");firstBLabel.className = "arrow icon-angle-down";firstBLabel.style.color = "white";firstALabel.appendChild(firstBLabel);/********添加ul标签************/var secondUl = document.createElement("ul");secondUl.setAttribute("class", "submenu");firstLi.appendChild(secondUl);for (var j = 0; j < result[i].children.length; j++){secondHref[j] = result[i].children[j].url;secondMenu[j] = result[i].children[j].name;secondIcon[j] = result[i].children[j].iconCls;/******添加li标签*******/var secondLi = document.createElement("li");secondLi.style.background = "#CCEBF8";secondUl.appendChild(secondLi);/*******添加a标签*******/var secondALabel = document.createElement("a");secondALabel.setAttribute("href", secondHref[j]);secondALabel.setAttribute("target", "content");//secondALabel.style.background = "#CCEBF8";secondLi.appendChild(secondALabel);/*******添加i标签**********/var secondILabel = document.createElement("i");secondILabel.setAttribute("class", "icon-double-angle-right");secondALabel.appendChild(secondILabel);/******添加二级导航信息********/secondALabel.innerHTML = secondMenu[j];secondALabel.style.fontSize = "15px";//secondALabel.style.marginLeft = "60px";}}}   }  },  error: function() {  alert("加载菜单失败");  } });})</script>