<input id="send" type="button" value="发送验证码">

<script>

    var times = 60, // 时间设置60秒

    timer = null;

    document.getElementById('send').onclick = function () {

     // 计时开始

     timer = setInterval(function () {

     times--;

     if (times <= 0) {

     send.value = '发送验证码';

     clearInterval(timer);

     send.disabled = false;

     times = 60;

     } else {

     send.value = times + '秒后重试';

     send.disabled = true;

     }

     }, 1000);

    }

    var times = 60,

        timer = null;

    $('#send').on('click', function () {

    var $this = $(this);

    // 计时开始

    timer = setInterval(function () {

    times--;

     if (times <= 0) {

        $this.val('发送验证码');

        clearInterval(timer);

        $this.attr('disabled', false);

        times = 60;

        } else {

            $this.val(times + '秒后重试');

            $this.attr('disabled', true);

        }

        }, 1000);

    });

</script>

var date = new Date();

    var dateYear = date.getFullYear();

    var dateMonth = date.getMonth() + 1;

    dateMonth = dateMonth < 10 ? '0'+dateMonth : dateMonth;

    var dateDays = date.getDate();

    dateDays = dateDays < 10 ? '0'+dateDays : dateDays;

    console.log(dateYear + '-' + dateMonth + '-' + dateDays);

var ipspan =document.querySelector(".span");

    function inspect(){

        var userAgent=navigator.userAgent;

        // 火狐浏览器

        if(userAgent.indexOf("Firefox") >-1){

            return "Firefox";

        }

        // 谷歌浏览器

        if(userAgent.indexOf("Chrome") >-1){

            return "Chrome";

        }

        // IE

        if(userAgent.indexOf("IE") >-1){

            return "IE";

        }

    }

    ipspan.onclick=function(){

        document.querySelector(".seebro").innerHTML =inspect();

    }

 (function(){

        var u = navigator.userAgent;

        var isAndroid =u.indexOf("Android") > -1 || u.indexOf("Adr") > -1; //Android终端  Google 浏览器默认为 Android 端

        var isIOS =!!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/); //IOS终端

        console.log(isAndroid);

        console.log(isIOS);

    }())