javascript获得select的value 

 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>

 

posted @ 2023-03-07 19:07  jason2018  阅读(80)  评论(0)    收藏  举报