js 打印

function doPrint() {
        var newWindow = window.open("打印窗口", "_blank");//打印窗口要换成页面的url
        var docStr = document.getElementById("printArea").innerHTML;//获取div为printArea块的html
        newWindow.document.write(docStr);
        newWindow.document.close();
        newWindow.print();
        newWindow.close();
    }