Home >Web Front-end >JS Tutorial >JS sends json format POST request
This time I will bring you JS to send json format POST request, what are the precautions for JS to send json format POST request, the following is a practical case, let's take a look.
<script type="text/javascript">
1. Get all parameter values of the url
function US() { var name, value; var str = location.href; var num = str.indexOf("?"); str = str.substr(num + 1); var arr = str.split("&"); for (var i = 0; i < arr.length; i++) { num = arr[i].indexOf("="); if (num > 0) { name = arr[i].substring(0, num); value = arr[i].substr(num + 1); this[name] = value; } } }
2. Use JS to send a POST request in JSON format
var us = new US(); var xhr = new XMLHttpRequest(); xhr.open("POST", "/searchguard/api/v1/auth/login", true); xhr.setRequestHeader("Content-type", "application/json"); xhr.setRequestHeader("kbn-version", "5.3.0"); xhr.onreadystatechange = function() { if (xhr.readyState == 4) { if (xhr.status == 200) { window.location.href = us.nextUrl; } } }; xhr.send(JSON.stringify({ "username" : us.u, "password" : us.p })); </script>
I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!
Recommended reading:
What functions does new() implement in JS?
Detailed explanation of how vue packages domain names based on parameter methods
The above is the detailed content of JS sends json format POST request. For more information, please follow other related articles on the PHP Chinese website!