时间:2020-11-29 10:47:46 | 栏目:AngularJS | 点击:次
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()" class="button button-calm xgmm-btn" 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