Question

如何在XHRHttpRequest完成或返回响应时调用函数seccuss。不使用jquery。

xmlhttp = new XMLHttpRequest();
xmlhttp.success()

这种函数将在每次请求后调用

Answer 1

您可以使用以下代码。

var ajaxRequest;  

try{
    // Opera 8.0+, Firefox, Safari, Chrome
    ajaxRequest = new XMLHttpRequest();
} catch (e){
    // Internet Explorer Browsers
    try{
        ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
    } catch (e) {
        try{
            ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
        } catch (e){
            // Something went wrong
            console.log('something went wrong. Check the error! '+ e);              
        }
    }
}
// Create a function that will receive data sent from the server
ajaxRequest.onreadystatechange = function(){
    if(ajaxRequest.readyState == 4){
        var response = ajaxRequest.responseText;
       // do something here with the response object
       // you could JSON.parse to parse the response if it is json string
    }
}
ajaxRequest.open("GET", "get_data.php", true); // true for asynchronous request
ajaxRequest.send(null);   // initiate a send(call)

Answer 2

xmlhttp.onreadystatechange = function(){
     if(request.status===200){
         var response = xmlhttp.responseText;
         //do something with response
     }
}

XHRHttpRequest完成功能

2 个答案: