jquery实现页面加载效果

2019-11-19 17:28:30

字体：大中小

来源：转载

供稿：网友

1、说明

Jquery页面加载可实现异步请求时提示“请稍后，正在加载...”效果，同步请求不可用（即ajax async: false）。

2、代码

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>jquery页面加载特效</title> <style type="text/css"> * {  margin: 0;  padding: 0;  list-style-type: none; } a, img {  border: 0; } .loading {  margin: 100px auto 0 auto;  width: 400px;  text-align: center;  font-size: 18px; } .loading .action {  text-decoration: none;  font-family: "微软雅黑" , "宋体"; } .cover {  position: fixed;  top: 0;  right: 0;  bottom: 0;  left: 0;  z-index: 998;  width: 100%;  height: 100%;  _padding: 0 20px 0 0;  background: #f6f4f5;  display: none; } .showLoad {  position: fixed;  top: 0;  left: 50%;  z-index: 9999;  opacity: 0;  filter: alpha(opacity=0);  margin-left: -80px; } *html, *html body {  background-image: url(about:blank);  background-attachment: fixed; } *html .showLoad, *html .cover {  position: absolute;  top: expression(eval(document.documentElement.scrollTop)); } #ajaxLoad {  border: 1px solid #8CBEDA;  font-size: 12px;  font-weight: bold; } #ajaxLoad div.loadAll {  width: 180px;  height: 50px;  line-height: 50px;  border: 2px solid #D6E7F2;  background: #fff; } #ajaxLoad img {  margin: 10px 15px;  float: left;  display: inline; } </style> <script type="text/javascript" src="js/jquery.min.js"></script> <script type="text/javascript"> $(function () {  var hei = $(document).height();  $(".cover").css({ "height": hei });  $(".action").click(function () {  startWaiting();  setTimeout(function () {   endWaiting();  }, 3000);  }); }); //开始加载 function startWaiting() {  $(".cover").css({ 'display': 'block', 'opacity': '0.8' });  $(".showLoad").stop(true).animate({ 'margin-top': '300px', 'opacity': '1' }, 200); } //结束加载 function endWaiting() {  $(".showLoad").stop(true).animate({ 'margin-top': '250px', 'opacity': '0' }, 400);  $(".cover").css({ 'display': 'none', 'opacity': '0' }); } </script></head><body> <div class="loading"> <a class="action" href="javascript:void(0);" rel="external nofollow" >点击加载特效</a></div> <div class="cover"> </div> <div id="ajaxLoad" class="showLoad"> <div class="loadAll">  <img src="image/waiting.gif">加载中，请稍候...</div> </div></body></html>