js 60秒倒计时

js实现的60秒倒计时

 var wait = 60;

function countdown() {
    if (wait == 0) {
        $("#btnmoblie").attr("disabled",false);
        $("#btnmoblie").val("点击获取短信验证码");
        wait = 60;
    } else {
        $("#btnmoblie").attr("disabled", true);
        $("#btnmoblie").val("重新发送(" + wait + ")");
        wait--;
        setTimeout(countdown, 1000);
    }
}