前端打印功能

<!DOCTYPE html>
<html lang="en">
<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">
    <link rel="stylesheet" href="css/page/index.css">
    <title>window调用打印接口</title>
    <style>
        #pr{width:100px;height:40px;line-height:40px;text-align:center;background:#ccc;}
        .box{width:600px;background:red;}
    </style>
</head>
<body>
    <div class="box">
        <h1>要打印的内容</h1>
        <p>测试内容</p>
    </div>
    <div id="pr">点击打印</div>
</body>
</html>
<script>
    function $(selector){
        return document.querySelector(selector);
    }
    //获取整个页面
    $("#pr").onclick =function(){
        window.print();
    }
 
    /* 实现打印全部页面(也可以打印局部页面 - 看需求) ---- 
          我是只打印baby里边的内容
          获取我们定义的id
       */
    $("#pr").onclick =function(){
        var oldHtml = $("body").innerHTML; 
        var printbox = $(".box").innerHTML;
        $("body").innerHTML = printbox;
        window.print();
        $("body").innerHTML = oldHtml;
 
    }
</script>

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转载自www.cnblogs.com/qinyios/p/12674704.html