點擊獲取驗證碼(倒計時60秒)

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js"></script>
<script type="text/javascript"> 
var countdown=60; 
function sendemail(){
    var obj = $("#btn");
    settime(obj);
    
    }
function settime(obj) { //發送驗證碼倒計時
    if (countdown == 0) { 
        obj.attr('disabled',false); 
        //obj.removeattr("disabled"); 
        obj.val("免費獲取驗證碼");
        countdown = 60; 
        return;
    } else { 
        obj.attr('disabled',true);
        obj.val("從新發送(" + countdown + ")");
        countdown--; 
    } 
setTimeout(function() { 
    settime(obj) }
    ,1000) 
}
</script>
<body> 
<input type="button" id="btn" value="獲取驗證碼" onclick="sendemail()"/> 
  
</body>
</html>
相關文章
相關標籤/搜索