How to make use of it:

1. Download and import the jquery-getjs.js plugin.

<script src="/path/to/cdn/jquery.slim.min.js"></script>
<script src="/path/to/build/jquery-getjs.js"></script>

2. Get the worth of the given parameter from the present web page URL.

const myValue = $.getjs("site");

// returns
myValue = "WCF"

3. Execute a callback if the parameter exists.

$.getjs("site", function(value) {
  alert("Your site is "+value);
}

4. Execute a callback if no matched parameter exists.

$.getjs("surname", function(value) {
  alert("Your surname is "+value);
}, function() {
  alert("You need to provide a surname");
});

Get URL Parameter Values With jQuery, jquery-getjs Plugin/Github, getjson example with parameters, getjson not working

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