SCRIPT5009: ‘URLSearchParams’ is undefined in IE 11

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Got a solution by replacing the code with the following:

$.urlParam = function(name){
    var results = new RegExp('[\?&]' + name + '=([^&#]*)').exec(window.location.href);
    if (results == null){
       return null;
    }
    else {
       return decodeURI(results[1]) || 0;
    }
}

So for example “example.com?param1=name&param2=&id=6”

$.urlParam('param1');  // name
$.urlParam('id');      // 6
$.urlParam('param2');  // null

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