jQuery getJSON 超时
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jQuery getJSON with timeout
提问by Scott B
When making a call out to the yahoo web service (http://boss.yahooapis.com/ysearch) to return a data set, is it possible to set a timeout and exit the routine once its elapsed?
当调用雅虎 Web 服务 (http://boss.yahooapis.com/ysearch) 以返回数据集时，是否可以设置超时并在超时后退出例程？
jQuery.getJSON("http://boss.yahooapis.com/ysearch/...etc",
function (data) {
//result set here
});
回答by Galen
You can use the timeout option
您可以使用超时选项
http://api.jquery.com/jQuery.ajax/
http://api.jquery.com/jQuery.ajax/
$.ajax({
url: url,
dataType: 'json',
data: data,
success: callback,
timeout: 3000 //3 second timeout
});
回答by anson chow
$.ajax({
url: url,
dataType: 'json',
data: data,
success: callback,
timeout: 3000 //3 second timeout,
error: function(jqXHR, status, errorThrown){ //the status returned will be "timeout"
//do something
}
});
回答by Mahesh
function testAjax() {
var params = "test=123";
var isneedtoKillAjax = true; // set this true
// Fire the checkajaxkill method after 10 seonds
setTimeout(function() {
checkajaxkill();
}, 10000); // 10 seconds
// For testing purpose set the sleep for 12 seconds in php page
var myAjaxCall = jQuery.getJSON('index2.php', params, function(data, textStatus){
isneedtoKillAjax = false; // set to false
// Do your actions based on result (data OR textStatus)
});
function checkajaxkill(){
// Check isneedtoKillAjax is true or false,
// if true abort the getJsonRequest
if(isneedtoKillAjax){
myAjaxCall.abort();
alert('killing the ajax call');
}else{
alert('no need to kill ajax');
}
}
}
回答by Chris Laplante
The timeout option proposed by Galen is the best way. If you want an alternate method, you could record the time when the request was initiated and, in your callback, compare it to the current time. Ignore the result if a certain amount of time has elapsed. Of course this would not cancel the request.
Galen 提出的超时选项是最好的方法。如果你想要一个替代方法，你可以记录请求发起的时间，并在你的回调中，将它与当前时间进行比较。如果经过一定时间，则忽略结果。当然，这不会取消请求。
