ajax ajaxError() method
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Ajax
English [ˈeɪˌdʒæks] American [ˈeˌdʒæks]
n. The full name is "Asynchronous JavaScript and XML" (asynchronous JavaScript and XML); refers to a A web development technology for creating interactive web applications. ;Ajax copper-tin-lead bearing alloy, Agnes explosive
errors
n. Error (plural form of error); fault, mistake
ajax ajaxError() methodsyntax
Function: ajaxError() method executes the function when an error occurs in the AJAX request. It is an Ajax event.
Syntax: .ajaxError(function(event,xhr,options,exc))
Parameters:
| Parameters | Description |
| function(event,xhr,options,exc) | Required. Specifies a function to run when a request fails. Additional parameters: event - Contains the event object xhr - Contains the XMLHttpRequest object options - Contains the options used in the AJAX request exc - Contains the JavaScript exception. |
Description: The XMLHttpRequest object and settings are passed as parameters to the callback function. The caught error can be passed as the last parameter: function (event, XMLHttpRequest, ajaxOptions, thrownError) {// thrownError will only be passed when an exception occurs this;}
ajax ajaxError() methodexample
<html>
<head>
<script type="text/javascript" src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("div").ajaxError(function(){
alert("发生错误！");
});
$("button").click(function(){
$("h2").text("文本已经改变");
});
});
</script>
</head>
<body>
<div id="txt"><h2>通过 AJAX 改变文本</h2></div>
<button>改变内容</button>
</body>
</html>Click the "Run instance" button to view the online instance