JavaScript打印页面

打印整个页面，去除打印按钮

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title></title>
    <style type="text/css">
        * {
            margin: 0px;
            padding: 0px;
        }
  </style>
</head>
<body ondragstart="return false">
    <div class="zhengshucontent">
        <img class="zsbg" src="~/Content/JobInjuryCertManager/Image/zhengshubg.png">
        <div class="bainhao">@(certInfo != null && certInfo.Id > 0 ? certInfo.CertNumber : "")</div>
        <div class="photo">
            <img src="@(certInfo != null && certInfo.Id > 0 ? certInfo.PhotoUrl : "")">
        </div>
        <div class="center">

            <div class="name">@(certInfo != null && certInfo.Id > 0 ? certInfo.Name : "")</div>
            <div class="idnumber">@(certInfo != null && certInfo.Id > 0 ? certInfo.PersonalId : "")</div>

        </div>
        <div class="bottombox">
            <div class="jigou">@(certInfo != null && certInfo.Id > 0 ? certInfo.DepartmentName : "")</div>
            <div class="yearmonnthday"><span>@(certInfo != null && certInfo.Id > 0 ? certInfo.CreateTime.ToString("yyyy") : "")</span><span>@(certInfo != null && certInfo.Id > 0 ? certInfo.CreateTime.ToString("MM") : "")</span><span>@(certInfo != null && certInfo.Id > 0 ? certInfo.CreateTime.ToString("dd") : "")</span></div>
        </div>
        <div class="erweima">
            <img src="@(certInfo != null && certInfo.Id > 0 ? certInfo.ErWeiMa : "")">
        </div>
    </div>
    <!--endprint-->
    <button onclick="printCert()">打印</button>
</body>
</html>

<script>
function printCert() {
        var eprnstr = "<!--endprint-->";
        var oldstr = document.body.innerHTML;
        var newstr = oldstr.substring(0, oldstr.indexOf(eprnstr));

        document.body.innerHTML = newstr + "</body></html>";
        window.print();
        document.body.innerHTML = "";
        document.body.innerHTML = oldstr;
    }
</script>

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原文地址：https://www.cnblogs.com/xiaonangua/p/13435544.html