open detail in master view

Hi all,
when I create an master detail list view in V2019 there is an + in front of all master records.
When i use mouse and click on + the existing detail records will be shown. (if there some, othervise you see just the add button to add detail records)how can i simulate the mouse click by default for the first master record when open the master list page?try something like in client scripts → list page → client scriptdocument.getElementById(‘el1_inserat_preview’).dispatchEvent(new MouseEvent(‘click’);but no sucess

You may simply put the following code in Client Scripts → Table-Specific → List Page → Startup Script instead:$(‘span#el1_inserat_preview > .ew-preview-row-btn.ew-icon.icon-expand’).click();

Hi, try but no success, may typing issue?
I capture the relevant html structure 1st row master List view may this helps (sorry I’m js noop)1) preview closed

<tr data-rowindex="1" id="r1_inserat" data-rowtype="1" class="ew-table-row">
	<td class="ew-list-option-body" data-name="preview">
		<span id="el1_inserat_preview" class="inserat_preview">
			<i class="ew-preview-row-btn ew-icon icon-expand"></i>
			<div class="d-none ew-preview">
				<li class="nav-item">
					<a href="#" class="nav-link" data-toggle="tab" data-table="bewerber" data-url="bewerberpreview.php?t=inserat&amp;f=3pvUpgAAgCjSTpwtFuaqSdYmsiw.">bewerber</a>
				</li>
				<div data-table="bewerber" data-url="bewerberpreview.php?t=inserat&amp;f=3pvUpgAAgCjSTpwtFuaqSdYmsiw." class="btn-group btn-group-sm">
					<button type="button" class="btn btn-default" title="" onclick="window.location='bewerberlist.php?showmaster=inserat&amp;fk_in_id=1';return false;" data-original-title="bewerber">
						<i data-phrase="MasterDetailListLink" class="icon-table ew-icon" data-caption="Detail List"></i>
					</button>
				</div>
			</div>
		</span>
	</td>
  1. preview open
<tr data-rowindex="1" id="r1_inserat" data-rowtype="1" class="ew-table-row">
	<td class="ew-list-option-body" data-name="preview">
		<span id="el1_inserat_preview" class="inserat_preview">
			<i class="ew-preview-row-btn ew-icon icon-collapse"></i>
			<div class="d-none ew-preview">
				<li class="nav-item">
					<a href="#" class="nav-link" data-toggle="tab" data-table="bewerber" data-url="bewerberpreview.php?t=inserat&amp;f=3pvUpgAAgCjSTpwtFuaqSdYmsiw.">bewerber</a>
				</li>

BR
G

I’ve just tried the following code in Startup Script of List Page that belongs to orders table, and it works properly. The Detail preview table in first row of List page of orders table is expanded as expected.$(‘span#el1_orders_preview > .ew-preview-row-btn.ew-icon.icon-expand’).click();