用Js实现懒加载和跨域的实现步骤

来源：动视网责编：小采时间：2020-11-27 20:10:49

用Js实现懒加载和跨域的实现步骤

用Js实现懒加载和跨域的实现步骤:今天教大家怎样用javascript来实现懒加载和跨域，懒加载和跨域是什么？实现懒加载和跨域有什么要注意的？接下来就给大家介绍用Js实现懒加载和跨域的实现步骤<!DOCTYPE html> <html> <head> <meta charset=&q

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导读用Js实现懒加载和跨域的实现步骤:今天教大家怎样用javascript来实现懒加载和跨域，懒加载和跨域是什么？实现懒加载和跨域有什么要注意的？接下来就给大家介绍用Js实现懒加载和跨域的实现步骤<!DOCTYPE html> <html> <head> <meta charset=&q

今天教大家怎样用javascript来实现懒加载和跨域，懒加载和跨域是什么？实现懒加载和跨域有什么要注意的？接下来就给大家介绍用Js实现懒加载和跨域的实现步骤

<!DOCTYPE html>
<html>
<head>
 <meta charset="UTF-8">
 <title>跨域</title>
 <script src="ajax.js"></script>
 <script>
 getAJAX(function(data){
 console.log(data);
 },"http://10.9.156.51:8086/API/article/add.aspx");
 </script>
</head>
<body> 
</body>
</html>
<!DOCTYPE html>
<html>
<head>
 <meta charset="UTF-8">
 <title>查询数据</title>
 <style>
 #container{
 width: 992px;
 margin: 20px auto;
 }
 th,td{
 background:#fff;
 font-size:14px;
 height: 30px;
 text-align: center;
 "微软雅黑";
 }
 a{
 color:#00468C;
 text-decoration: none;
 }
 a:hover{
 color:#00468C;
 text-decoration: underline;
 }
 .even{
 background:#ff6600;
 }
 #cover{
 position: absolute;
 left: 0;
 top: 0;
 width:100%;
 height: 100%;
 background: #000;
 opacity:0.6;
 filter:alpha(opacity=60);
 display: none;
 }
 #updateform{
 width:300px;
 height: 300px;
 border:solid 1px #CCC;
 position: absolute;
 left:50%;
 margin-left: -150px;
 top:50%;
 margin-top: -200px;
 display: none;
 background: #fff;
 }
 #updateform h3{
 display: block;
 border-bottom:solid 1px #CCC;
 border-bottom:solid 1px #CCC;
 height: 38px;
 line-height: 38px;
 background: #ff6600;
 margin: 0;
 "">微软雅黑;
 color:#fff;
 font-size: 16px;
 }
 #updateform form div{
 padding-top: 10px;
 }
 </style>
 <script src="ajax.js"></script>
 <script>
 function createData(b){
 var str = "";
 for(var i = 2; i < b.length; i++){
 var css = "";
 if(i % 2 == 0){
 css = "even"
 }
 str += "<tr>"
 + "<td class='"+css+"'>"+b[i].ID+"</td>"
 + "<td class='"+css+"'>"+b[i].ATitle+"</td>" 
 + "<td class='"+css+"'>"+b[i].AClickCount+"</td>" 
 + "<td class='"+css+"'>"+b[i].ATime+"</td>"
 + "<td class='"+css+"'>"
 + "<a href=\"javascript:;\" onclick='updateData(this)'>修改</a> | <a href=\"javascript:;\" onclick='delDOM(this)'>删除</a>"
 + "</td>"
 + "</tr>";
 }
 var html = "<table id=\"tb1\" cellspacing=\"1\" style=\"width:990px; background:#000;\">"
 + "<tr>"
 + "<th>编号</th>" 
 + "<th>标题</th>" 
 + "<th>点击量</th>" 
 + "<th>发布时间</th>" 
 + "<th>操作</th>"
 + "</tr>"
 + str
 + "</table>";
 container.innerHTML = html;
 }
 window.onload = function(){
 var url = "../../API/article/get.aspx";
 getAJAX(function(data){
 createData(data);
 },url);
 }
 function delDOM(obj){
 var tb1 = document.getElementById("tb1");
 var id = obj.parentNode.parentNode.children[0].innerHTML;
 getAJAX(function(data){
 if(data.result == "ok"){
 tb1.children[0].removeChild(obj.parentNode.parentNode);
 }
 },"../../API/article/del.aspx?id="+id+"");
 }
 function updateData(obj){
 var cover = document.getElementById("cover");
 var updateform = document.getElementById("updateform");
 console.log(cover);
 cover.style.display = "block";
 updateform.style.display = "block";
 var atitle = obj.parentNode.parentNode.children[1].innerHTML;
 var clickcount = obj.parentNode.parentNode.children[2].innerHTML;
 var id = obj.parentNode.parentNode.children[0].innerHTML;
 var form = document.forms[0];
 form.elements[0].value = atitle;
 form.elements[1].value = clickcount;
 form.elements[2].onclick = function(){
 var xhr = createXHR();
 xhr.open("POST","../../API/article/update.aspx",true);
 xhr.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
 xhr.onreadystatechange = function(){
 if(xhr.readyState == 4){
 if(xhr.status == 200){
 var data = eval("("+xhr.responseText+")");
 if(data.result == "ok"){
 updateform.style.display = "none";
 cover.style.display = "none";
 
 obj.parentNode.parentNode.children[1].innerHTML = form.elements[0].value;
 obj.parentNode.parentNode.children[2].innerHTML = form.elements[1].value;
 
 // var url = "../../API/article/get.aspx";
 // getAJAX(function(data){
 // createData(data);
 // },url);
 }
 }
 }
 }
 xhr.send("atitle="+form.elements[0].value+"&aclickcount="+form.elements[1].value+"&id="+id+"");
 }
 }
 
 
 
 </script>
</head>
<body>
 <div id="cover"></div>
 <div id="updateform">
 <h3>修改数据</h3>
 <form>
 <div>标 题：<input type="text"></div>
 <div>点击量：<input type="text"></div>
 <div><input type="button" value="保存数据"></div>
 </form>
 </div>
 <div id="container">
 
 </div>
</body>
</html>

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用Js实现懒加载和跨域的实现步骤

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