ionic+AngularJs实现获取验证码倒计时按钮

按钮功能为:点击“获取验证码”——按钮不可用-设置倒计时-60秒后重新获取。

主要实现原理:点击后,设置一个$interval,每一秒更改一次剩余时间,并依赖Angular数据绑定实时显示在页面中。设置一个$timeout,60秒后将按钮初始化到可用状态。

实现代码:

(1)js代码,设置成一个directive以便多次调用。

angular.module('winwin').directive('timerbutton', function($timeout, $interval){ return { restrict: 'AE', scope: { showTimer: '=', timeout: '=' }, link: function(scope, element, attrs){ scope.timer = false; scope.timeout = 60000; scope.timerCount = scope.timeout / 1000; scope.text = "获取验证码"; scope.onClick = function(){ scope.showTimer = true; scope.timer = true; scope.text = "秒后重新获取"; var counter = $interval(function(){ scope.timerCount = scope.timerCount - 1; }, 1000); $timeout(function(){ scope.text = "获取验证码"; scope.timer = false; $interval.cancel(counter); scope.showTimer = false; scope.timerCount = scope.timeout / 1000; }, scope.timeout); } }, template: '<button on-tap="onClick()" ng-disabled="timer"><span ng-if="showTimer">{{ timerCount }}</span>{{text}}</button>' }; });

(2)html代码

<timerbutton show-timer="false">获取验证码</timerbutton>

实现效果:

(1)点击之前

  

(2)点击之后

  

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