function getParameterByName(name, url) { if (!url) { url = window.location.href; } name = name.replace(/[[]]/g, "$&"); var regex = new RegExp("[?&]" + name + "(=([^&#]*)|&|#|$)"), results = regex.exec(url); if (!results) return null; if (!results[2]) return ''; return decodeURIComponent(results[2].replace('/+/g', " ")); } jQuery("#txtPS").val(getParameterByName("psname")); jQuery("#txtPS").prop("readonly", true);