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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="UTF-8">
- <meta name="viewport" content="width=device-width, initial-scale=1.0">
- <title>Document</title>
- </head>
- <body>
- <button>按钮</button>
- <script>
- var oBtn = document.getElementsByTagName("button")[0];
- oBtn.onclick = function(e){
- console.log(e);
- }
- </script>
- </body>
- </html>
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