js简单实现发送验证码后的倒计时效果

简简单单

<javascript>
var time = 60;
function send(_this){
    var phone = "";
    // 发送短信业务代码--略
    if (time == 0) {
        _this.removeAttribute("disabed");
        _this.value = "发送短信";
        time = 60;
        time--;
        return;
    }else{
        _this.setAttribute('disabed',true);
        _this.value = "重新发送(" + time + "s)";
        time--;
    }
    // 定时器
    setTimeout(function(){
        send(_this);
    },1000);
}
</javascript>