Prime NG select all itens of current page
var el = document.querySelectorAll('#checkboxMark > div > div.ui-chkbox-box.ui-widget.ui-state-default');
for (var i=0;i<=el.length; i++) {
el[i].click();
}
var el = document.querySelectorAll('#checkboxMark > div > div.ui-chkbox-box.ui-widget.ui-state-active');
for (var i=0;i<=el.length; i++) {
el[i].click();
}
<td>
<p-tableCheckbox id="checkboxMark"[value]="rowData"></p-tableCheckbox>
</td>