<span style="font-size: 14px;"><input type="button" value="確定"id="rulesubmit" /> <scripttypescripttype="text/javascript"> var secs = 3; var wait = secs * 1000; var update = function(num,value){ if (num == (wait/1000)){  $("#rulesubmit").val("免費獲取"); } else{ printnr = (wait/1000) - num; $("#rulesubmit").val("免費獲取(" + printnr +")"); } }; var timer = function(){ $("#rulesubmit").attr("disabled",false); $("#rulesubmit").val("免費獲取"); }; $(function(){ (function(){ function getValidateCode(){ $("#rulesubmit").val("免費獲取(" + secs +")"); $("#rulesubmit").attr("disabled",true); for (i = 1; i <= secs;i++){ window.setTimeout("update(" + i + ")",i*1000); } window.setTimeout("timer()",wait); } $("#rulesubmit").click(function(){ getValidateCode(); }); })();//注意，我這里在測試的時候改成里匿名函數，其實不必這樣做也可以實現 //getValidateCode()當作一個單獨的函數，在$(function(){//點擊按鈕執行函數，即上面藍色部分代碼;}); }); </script></span>