This time I will show you how to use JSON format to send POST requests, and what are the precautions for using JSON format to send POST requests. The following is a practical case, let's take a look.
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:
Five common knowledge points in JS interviews
What are the ways to make an Observer in Vue
The above is the detailed content of How to send POST request using JSON format. For more information, please follow other related articles on the PHP Chinese website!