由网友(记得最初的那个你、)分享简介：如何检查是否一个Ajax的功能是忙碌从previous电话吗？我怎么能prevent调用一个Ajax功能，如果它的 readyState的！= 4 还没有从previous电话？How to check if an ajax function is busy from a previous call? How ca...

如何检查是否一个Ajax的功能是忙碌从previous电话吗？我怎么能prevent调用一个Ajax功能，如果它的 readyState的！= 4 还没有从previous电话？

How to check if an ajax function is busy from a previous call? How can i prevent the call to an ajax function if it's readyState != 4 yet from a previous call?

推荐答案

您可以使用布尔和适当的onreadystatechange functoin;

You can use a boolean and an appropriate onreadystatechange functoin;

var inprogress = true;
ajaxRequest = ...
ajaxRequest.onreadystatechange = function(){
    if(ajaxRequest.readyState == 4){
    	inprogress = false;
    }
}