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ionic+AngularJs实现获取验证码倒计时按钮

时间:2020-11-29 10:47:46 | 栏目:AngularJS | 点击:

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

   

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