Home > Article > Web Front-end > How to use JS to obtain url parameters and send POST request in json format
This time I will show you how to use JS to get url parameters to send a POST request in json format , 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;
}
}
}
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!
How to implement local preview of jQuery uploaded images
How to use Koa2 file upload and download
The above is the detailed content of How to use JS to obtain url parameters and send POST request in json format. For more information, please follow other related articles on the PHP Chinese website!