jquery 实现倒计时60秒
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<html><head><meta http-equiv="content-type" content="text/html; charset=UTF-8"><meta content="width=device-width,initial-scale=1.0,maximum-scale=1.0,user-scalable=no" id="viewport" name="viewport"><title>jquery 实现倒计时60秒</title><script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js"></script>
</head><body><input type="button" id="btn" value="免费获取验证码" /><script type="text/javascript">var countdown = 60;$('#btn').css('background', '#0af');$('#btn').css('border', 'none');$('#btn').css('borderRadius', '5px');$('#btn').css('height', '30px');$('#btn').css('color', '#fff');$('#btn').css('cursor', 'pointer');function getCountTime(obj) {if (countdown == 0) {obj.attr('disabled', false);obj.val("免费获取验证码");countdown = 60;$('#btn').css('background', '#0af');return;} else {obj.attr('disabled', true);obj.val("重新发送(" + countdown + ")");countdown--;$('#btn').css('background', '#999')}setTimeout(function () {getCountTime(obj)}, 1000)}$('#btn').click(function () {getCountTime($('#btn'))})</script>
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