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Check all checkbox in gridview once check header. Pure Javascript

function CheckAllRow(tableid, ChkId) { var TableData = document.getElementById("ctl00_hldPage_" + tableid); if ($("#" + ChkId).is(':checked')) { for (let line = 1; line < TableData.rows.length; line++) { var Id = TableData.rows[line].cells[2].children[0].children[0].id; $("#" + Id).attr("checked", true); } } else { for (let line = 1; line < TableData.rows.length; line++) { var Id = TableData.rows[line].cells[2].children[0].children[0].id; $("#" + Id).attr("checked", false); } } }

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