How to get parameter value from URL query string

Question

How can I parse the below URL query string to get the value of the quantity parameter?

myurl/Channels/BuyCredits?quantity=2

I have tried numerous examples without success:

I just tried this example:

 marvmentApp.controller("channelCreditController", function($scope, $http, $compile, $location) {
 var params, test2;
 $scope.parseQueryString = function() {
 var objURL, str;
 str = window.location.search;
 objURL = {};
 str.replace(new RegExp("([^?=&]+)(=([^&]*))?", "g"), function(0,ドル 1,ドル 2,ドル 3ドル) {});
 objURL[1ドル] = 3ドル;
 return;
 return objURL;
 };
 params = $scope.parseQueryString();
 test2 = params['quantity'];
 debugger;
 });

I keep getting an error 1ドル is udefined

• Rudie: 0ドル - 3ドル only exist within the scope of your empty function function(0,ドル 1,ドル 2,ドル 3ドル) {}. (And there are much easier ways to extract a query param.)

Answer 1

Use the JavaScript location.search property. It will return the query string of your URL (including the "?" symbol).

If the URL is http://www.example.org/index.php?param=arg

The value location.search is ?param=arg.

To remove the "?", use the JS replace method:

var url = "?param=arg"; // pretend that the variable "url" is the query string
url = url.replace(/[\?]/,"");
document.getElementById('output').innerHTML = "Query string is: \"" + url + "\"";

<p id="output"></p>

Hope this helps!