Unable to get the parameter value from URL

[Rakesh50]

We are trying to get the value from URL by using onload catalog client script but we couldn't.

URL : https://test.service-now.com/nav_to.do?uri=%2Fu_cx_catalog_picker.do%3Fsysparm_parent_anchor%3Dhttps:%2F%2Ftest.service-now.com%2Finteraction.do%253Fsysparm_record_list%253DORDERBYDESCnumber%2526sysparm_record_rows%253D29%2526sysparm_record_row%253D8%2526sysparm_record_target%253Dinteraction%2526sys_id%253D0ae8bcc71bafc1d8c8e7db9ebd4bcb06%26sysparm_parent_number%3DIMS0000028%26sysparm_parent_sys_id%3D0ae8bcc71bafc1d8c8e7db9ebd4bcb06%26sysparm_parent_table%3Dinteraction

From above URL we need sysparm_parent_sys_id parameter value. We tried below script please check and let us know if any corrections 

function onLoad() {
//Type appropriate comment here, and begin script below
var InteractionSysID = getParameterValue('sysparm_parent_sys_id');

alert(InteractionSysID);
if(InteractionSysID !='')
g_form.setValue('interaction',InteractionSysID);
function getParameterValue(name) {
var url = top.location.href;
var value = new URLSearchParams(url).get(name);
if (value) {
return value;
}
}
}

In alert we are getting null value

[rahul16]

not worked

[Rakesh50]

Hi @Chetan Mahajan 

Tried but showing below error

[Jaspal Singh]

Try below.

function onLoad() {
	
	var v_sURLParam = "";
	v_sURLParam = "sysparm_parent_sys_id";
	
	
	var v_sID = getParameterValue(v_sURLParam);
	if (v_sID) {
		g_form.setValue('interaction', v_sID);
	}
	
}

function getParameterValue(name) {
	name = name.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
	var regexS = "[\\?&]" + name + "=([^&#]*)";
	var regex = new RegExp(regexS);
	var results = regex.exec(top.location);
	if (results == null) {
		return "";
	} else {
		return unescape(results[1]);
	}
}