发送短信验证（防刷新）

//防止页面刷新倒计时失效
function monitor(obj) {
    var LocalDelay = getLocalDelay();
    var timeLine = parseInt((new Date().getTime() - LocalDelay.time) / 1000);
    if (timeLine > LocalDelay.delay) {
        console.log("过期");
    } else {
        _delay = LocalDelay.delay - timeLine;
        obj.text(_delay+'s').addClass("btn-disabled").removeClass('send-btn');
        var timer = setInterval(function() {
            if (_delay > 1) {
                _delay--;
                obj.text(_delay+'s');
                setLocalDelay(_delay);
            } else {
                clearInterval(timer);
                obj.text("发送验证码").removeClass("btn-disabled").addClass('send-btn');
            }
        }, 1000);
    }
};
//倒计时效果
/**
 * @param {Object} obj 获取验证码按钮
 * @param {Function} callback  获取验证码接口函数
 */
function countDown(obj, callback) {
    if (obj.text() == "发送验证码") {
        var _delay = 60;
        var delay = _delay;
        //    按钮禁用
        obj.text(_delay+'s').addClass("btn-disabled").removeClass('send-btn');
        var timer = setInterval(function() {
            if (delay > 1) {
                delay--;
                obj.text(delay+'s');
                setLocalDelay(delay);
            } else {
                clearInterval(timer);
                //    恢复按钮禁用状态
                obj.text("发送验证码").removeClass("btn-disabled").addClass('send-btn');
            }
        }, 1000);

        callback();
    } else {
        return false;
    }
}
//设置setLocalDelay
function setLocalDelay(delay) {
    //location.href作为页面的唯一标识，可能一个项目中会有很多页面需要获取验证码。
    localStorage.setItem("delay_" + location.href, delay);
    localStorage.setItem("time_" + location.href, new Date().getTime());
}
//getLocalDelay()
function getLocalDelay() {
    var LocalDelay = {};
    LocalDelay.delay = localStorage.getItem("delay_" + location.href);
    LocalDelay.time = localStorage.getItem("time_" + location.href);
    return LocalDelay;
}

//****************************获取验证码的  点击事件*************************************
//***********************************************************************************
var btn = document.getElementById("getCode");
//调用监听
monitor($(btn));
//点击click

btn.onclick = function() {
    //倒计时效果  getCode回调函数  获取验证码api
    countDown($(btn), getCode);
};

function getCode() {
    $.get("", function(data) {
        if (data.state ==0) {

        } else {

        }
    });
}