how to get the data from different pages

Currently, I can only get the data from the 1st page, through the below js code, how can I get all the data from other pages

$('table > tbody  > tr').each(function (i, el) {
    var selectedVal = $(this).find("option:selected").text();
    var $tds = $(this).find('td');
    var obj = {
        permNo: $tds.eq(0).text(),
        fileType: selectedVal,
        refer: $tds.eq(3).text()
    }
    permlist.push(obj);
})