console.log(XMLHttpRequest) //XMLHttpRequest%20.html:11 function XMLHttpRequest() { [native code] }
var xmlhttp = new XMLHttpRequest();
console.log(xmlhttp) //XMLHttpRequest对象,下面内容
- onload:null
- onloadend:null
- onloadstart:null
- onprogress:null
- onreadystatechange:null
- ontimeout:null
- readyState:0
- response:""
- responseText:""
- responseType:""
- responseURL:""
- responseXML:null
- status:0
- statusText:""
- timeout:0
ajax
原文：https://www.cnblogs.com/shenlan88/p/11066396.html
