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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>
- <select multiple>
- <option value="黑大">黑大</option>
- <option value="理工">理工</option>
- <option value="农大">农大</option>
- <option value="黑工程">黑工程</option>
- </select>
- <script>
- var oSel = document.getElementsByTagName("select");
- // 表单元素内容发生变化的时候会出发 onchange
- // oSel[0].onchange = function(){
- // console.log(this.selectedOptions)
- // console.log(this.selectedIndex);
- // console.log(this.options);
- // console.log(this.options[1].selected);
- // }
- oSel[0].ondblclick = function(){
- console.log(this);
- }
- </script>
- </body>
- </html>
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