<!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>