Dom manupaulation

[SravyaA]

Hello All,

We have one catalog client script which uses dom manipulation.

function onSubmit() {

    //var checkValueOfField = g_form.getValue('u_select_user_profile');

    // check CT or ITP access is contained within the variable

    //if (checkValueOfField.indexOf('d03dd507db1d3f40034de0a1ca96196c')>=0 || checkValueOfField.indexOf('1a3dd507db1d3f40034de0a1ca96199e')>=0){

    //run attachment check

    if (g_form.getValue('type_request') == "inquiry") {

        if ((this.document.getElementsByClassName('get-attachment').length == 0)) {

            // no attachment uploaded, we alert user and dont submit request

            alert('Attachment (screenshot of error) is mandatory for incident submission.');

            return false;

        }

    }

}

It is not working as excepted. We  identified that Dom manipulation is not working on current ServiceNow version .
:

Based on the below link:

https://www.servicenow.com/community/developer-blog/isolate-script-in-london/ba-p/2275821

We made isolated script to false and created the property which mentioned in the article but the issue remains same. 

Please do need full help.

Regards,

sravya.A

[jusfory1]

You can't access dom by the key word 'document' directly as this code snapt revoled in js sandbox, but can get access dom by this methoed

var form_field_name='';//like number or state anything else;
var rootEle = g_form.getElement(form_field_name).getRootNode();// DOM;