javascript: get Url parameter with javascript

here’s plenty of solution for get URL parameter with javascript.

1. Custom getUrlParam function with JQuery

var getUrlParameter = function getUrlParameter(sParam) {
    var sPageURL = decodeURIComponent(window.location.search.substring(1)),
        sURLVariables = sPageURL.split('&'),
        sParameterName,
        i;

    for (i = 0; i < sURLVariables.length; i++) {
        sParameterName = sURLVariables[i].split('=');

        if (sParameterName[0] === sParam) {
            return sParameterName[1] === undefined ? true : sParameterName[1];
        }
    }
};

// usage for example.com/?technology=jquery&blog=jquerybyexample
var tech = getUrlParameter('technology');
var blog = getUrlParameter('blog');

2. Using URLSearchParams (for supported browser)

let searchParams = new URLSearchParams(window.location.search)

searchParams.has('send') // true or false

3. using jquery.url.js

If you have to get url params for many time, you can use jquery.url.js for simple usage. Also you can get other url information such as protocol, path, etc.

You have to import jquery.url.js

<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="jquery.url.js"></script>

<!-- URL:  www.example.com/correct/?message=done&year=1990 -->

<script type="text/javascript">
$(function(){
    $.url.attr('protocol')  // --> Protocol: "http"
    $.url.attr('path')      // --> host: "www.example.com"
    $.url.attr('query')         // --> path: "/correct/"
    $.url.attr('message')       // --> query: "done"
    $.url.attr('year')      // --> query: "1990"
});