fmpq.com
源代码：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Fmpq教程(fmpq.com)</title> <script> function removeLastOption(){ var x=document.getElementById("mySelect"); if (x.length>0){ x.remove(x.length-1); } } </script> </head> <body> <form> <select id="mySelect"> <option>Apple</option> <option>Pear</option> <option>Banana</option> <option>Orange</option> </select> <input type="button" onclick="removeLastOption()" value="移除最后一个选项"> </form> </body> </html>
运行结果