<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>Title</title><script>
window.onload = function (){//獲取圖片對象
var img = document.getElementById("checkCode");//獲取超鏈接對象
var a = document.getElementById("change");//綁定點擊事件
img.onclick = function (){//獲取毫秒值對象
var date =newDate().getTime();
img.src ="/checkCodeServlet?"+date;}
a.onclick = function (){//獲取毫秒值對象
var date =newDate().getTime();
img.src ="/checkCodeServlet?"+date;}}</script></head><body><img id="checkCode" src="/checkCodeServlet" alt=""><a id="change" href="#">看不清?換一張</a></body></html>