jQuery getJSON with timeout

问题

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?

jQuery.getJSON("http://boss.yahooapis.com/ysearch/...etc",
        function (data) {
              //result set here
            });

回答1:

You can use the timeout option

http://api.jquery.com/jQuery.ajax/

$.ajax({
  url: url,
  dataType: 'json',
  data: data,
  success: callback,
  timeout: 3000 //3 second timeout
});

回答2:

 $.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3:

    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4:

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.

来源：https://stackoverflow.com/questions/4138470/jquery-getjson-with-timeout

标签

jquery

timeout

getjson