// example url: https://mydomain.com/?fname=johnny&lname=depp const urlParams = new URLSearchParams(window.location.search); const firstName = urlParams.get('fname'); // johnny
serialize = function(obj) { var str = []; for (var p in obj) if (obj.hasOwnProperty(p)) { str.push(encodeURIComponent(p) + "=" + encodeURIComponent(obj[p])); } return str.join("&"); } console.log(serialize({ foo: "hi there", bar: "100%" })); // foo=hi%20there&bar=100%25