JS打印页面指定区域

//打印
function printPage(areaId) {
if (parent.$("#PrinFrame").length == 0) {
parent.$("body").append('<iframe id="PrinFrame" style="display: none; "></iframe>');
}

parent.$("#PrinFrame").attr("src", window.location.href);

parent.$("#PrinFrame").one("load", function () {
setTimeout(function () {
var html = '<table style="width:970px;"><tr><td>';
html += $("#" + areaId).html();
html += '</td></tr></table>';
parent.$("#PrinFrame").contents().find("body").html(html);
parent.$("#PrinFrame")[0].contentWindow.document.execCommand('Print');
}, 100);
});
}