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JS实现html打印功能,打印后返回原页面

发布时间:2020-04-23作者:小灵龙来源:未知点击:197


<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>打印功能</title>
  <style>
    h1{
        text-align: center;
    }
    #main {
        width: 800px;
        height: 200px;
        margin: 0 auto;
        border: 1px solid #ccc;
    }
    p {
        text-align: center;
    }
    span {
        display: inline-block;
        width: 100px;
        height: 40px;
        background: #3385FF;
        text-align: center;
        line-height: 40px;
        color: #fff;
        float: right;
        margin-top: 20px;
        margin-right: 320px;
        cursor: pointer;    }

  </style>
</head>
<body>
  <!--startprint-->
  <div id="main">
    <h1>xx报告</h1>
    <p>打印标题</p>
    <p>打印内容</p>
    <p>正文部分正文部分正文部分正文部分正文部分正文部分正文部分</p>
  </div>
  <!--endprint-->
  <span id="printBtn" onclick="preview()">打印</span>
  <script>
   //打印
        function preview()
        {
            bdhtml=window.document.body.innerHTML;
            sprnstr="<!--startprint-->";
            eprnstr="<!--endprint-->";
            prnhtml=bdhtml.substr(bdhtml.indexOf(sprnstr)+17);
            prnhtml=prnhtml.substring(0,prnhtml.indexOf(eprnstr));
            window.document.body.innerHTML=prnhtml;
            window.print();
            // 返回原界面         

          window.document.body.innerHTML = bdhtml
          window.location.reload()

        } 

  </script>
</body>
</html>

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