ajax提交加载进度条示例代码

 
.progress{z-index: 2000} 
.mask{position: fixed;top: 0;right: 0;bottom: 0;left: 0; z-index: 1000; background-color: #2F2F2F} 

 
<img id="progressImgage" class="progress" style="display:none" alt="" src="/ajax-loader.gif"/> 
<div id="maskOfProgressImage" class="mask" style="display:none"></div> 

 
<p> </p><p>var img = $("#progressImgage"); 
var mask = $("#maskOfProgressImage");</p> 

 
$.ajax({ 
url:url, 
type:"post", 
dataType:"json", 
data:data, 
beforeSend:function(xhr){ 
img.show().css({ 
"position": "fixed", 
"top": "40%", 
"left": "45%", 
"margin-top": function () { return -1 * img.height() / 2; }, 
"margin-left": function () { return -1 * img.width() / 2; } 
}); 
mask.show().css("opacity", "0.1"); 
}, 
success:function(result){ 
doSuccess() 
}, 
complete:function(xhr){ 
img.hide(); 
mask.hide(); } 
}); 

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