1 <!DOCTYPE html>
2 <html lang="en">
3
4 <head>
5 <meta charset="UTF-8">
6 <meta http-equiv="X-UA-Compatible" content="IE=edge">
7 <meta name="viewport" content="width=device-width, initial-scale=1.0">
8 <title>Document</title>
9 </head>
10
11 <body>
12 <script>
13 window.onload = function() {
14 let selectElt = document.getElementById("mySelect");
15 selectElt.onchange = function() {
16 alert(selectElt.value);
17 }
18 }
19 </script>
20 <select name="mySelect" id="" onchange="alert(this.value);">
21 <option value="">--请选择省份--</option>
22 <option value="001">河北省</option>
23 <option value="002">河北省</option>
24 <option value="003">河北省</option>
25 <option value="004">河北省</option>
26 </select>
27 </body>
28
29 </html>
