How to retrieve info from URL through client script on load?

[Mike S3]

I would like get the view name from the URL through a catalog script , I have the current script but I'm getting the following error message : 

TypeError: Cannot read properties of null (reading 'URL')

function onLoad() {

    var view = getParm('view');
	
    if (view.toString() == 'review2') {
		
         g_form.setValue('u_earb_request_type','review2');  
	  g_form.setReadOnly('u_request_name',false);
	   g_form.setReadOnly('u_assigned_lead',false);
	   g_form.setReadOnly('u_client_name',false);
    }


}

function getParm(value) {
    var url = document.URL.parseQuery();
    if (url[value]) {
        return decodeURI(url[value]);
    } else {
        return;
    }
}

[SD4]

Hi Mike,

can you show me the URL from which you are trying to fetch data

[Jaspal Singh · Accepted solution]

Can you try below code as is in your onLoad script once.

 function getParameterValue(name) {
        var url = top.location.href;
        var value = new URLSearchParams(url).get(name);
        if (value) {
            return value;
        }
        if (!value) {
            var gUrl = new GlideURL();
            gUrl.setFromCurrent();
            value = gUrl.getParam("view");
            return value; //this will give you the value


       if (value.toString() == 'review2') {
		
         g_form.setValue('u_earb_request_type','review2');  
	  g_form.setReadOnly('u_request_name',false);
	   g_form.setReadOnly('u_assigned_lead',false);
	   g_form.setReadOnly('u_client_name',false);
    }
        }
    }