jQuery自定义时长LED倒计时代码

js代码

<script type=\"text/javascript\">
$(document).ready(function() {
	var date_str = \"\";
	for (var i = 0; i <= 23; i++) {
		var d_;
		i < 10 ? d_ = \"0\" + i : d_ = i;
		date_str = date_str + \"<option>\" + d_ + \"</option><br/>\"
	}
	$(\"#_minute\").append(date_str);
	var time_str = \"\";
	for (var i = 0; i <= 59; i++) {
		var t_;
		i < 10 ? t_ = \"0\" + i : t_ = i;
		time_str = time_str + \"<option>\" + t_ + \"</option><br/>\"
	}
	$(\"#_second\").append(time_str);
});
$(document).ready(function() {
	$(\"#start_\").click(function() {
		var m_ = $(\"#_minute\").val();
		var s_ = $(\"#_second\").val();
		seconds_ = m_ * 60 + s_ * 1;
	});
	$(\"#reset_\").click(function() {
		$(\"#_minute\").val(\"00\");
		$(\"#_second\").val(\"00\");
		seconds_ = 0;
		clearInterval(timer);
	});
});
</script>