使用方法:time($("input"))
/* 倒计时函数 */
var wait = 60,
timer;
function time(o) {
if(wait == 0) {
o.removeAttr("disabled");
o.css("backgroundColor", "rgba(34,211,162,1)");
o.val("获取验证码");
wait = 60;
} else {
o.attr("disabled", true);
o.css("backgroundColor", "rgba(34,211,162,0.7)");
o.val("重新获取(" + wait + "s)");
wait--;
timer = setTimeout(function() {
time(o)
}, 1000)
}
}












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