84669 person learning
152542 person learning
20005 person learning
5487 person learning
7821 person learning
359900 person learning
3350 person learning
180660 person learning
48569 person learning
18603 person learning
40936 person learning
1549 person learning
1183 person learning
32909 person learning
How to get response header information in js, use sessionstatus=XMLHttpRequest.getResponseHeader("sessionStatus"); and the result is null.
Please help me guys find out how to solve it. The screenshots are as follows:
var req = new XMLHttpRequest(); req.open('GET', document.location, false); req.send(null); var headers = req.getAllResponseHeaders().toLowerCase(); alert(headers);
See if you write sessionStatus in all lower case, try writing it in camel case.
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
See if you write sessionStatus in all lower case, try writing it in camel case.