add current loggedin user to watchlist using client script...

[hasthipooji]

   IN THIS CODE WHILE DISPLAYING IN G_FORM IT IS NOT SHOWING .....

g_form.addInfoMessage("userId ofwatchlist "+g_form.getDisplayBox('watch_list').value);

}
THIS ISNOT DISPLAYING IN MY FORM WHY? WHATS THE MISTAKE IN CODE

var watchList=g_form.getValue('watch_list');

    var userId= g_user.userID;

    if (!watchList.includes(userId)) {

    if(watchList==""){

        g_form.setValue('watch_list',userId);

    }

    else{

        g_form.setValue('watch_list',watchList+" "+userId);

    }

  }

        g_form.addInfoMessage("userId ofwatchlist "+g_form.getDisplayBox('watch_list').value);

}

[M Iftikhar]

Hello @hasthipooji,

The issue is that g_form.getDisplayBox('watch_list').value  returns null or undefined, because the Watch list field is not a simple reference field , it’s a Glide List type. The  g_form.getDisplayBox('watch_list').value method works with reference fields, not glide lists.

You can fix it by using getDisplayValue() instead.Corrected version of your script:

    var watchList = g_form.getValue('watch_list');
    var userId = g_user.userID;

    // If user not already in watch list
    if (!watchList.includes(userId)) {
        if (watchList == "") {
            g_form.setValue('watch_list', userId);
        } else {
            g_form.setValue('watch_list', watchList + "," + userId);
        }
    }

    // Wait a bit for the display value to update
    setTimeout(function() {
        g_form.addInfoMessage("userId of Watch List: " + g_form.getDisplayValue('watch_list'));
    }, 1000);

This should correctly display the updated watch list on your form.

If my response helped, please mark it as the accepted solution so others can benefit as well.