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數據更改時閃爍單元格 AngularJS

[英]Blink cell on data change AngularJS

所以我是 Angular 和 JS 的新手,我一直在嘗試做一些簡單的事情,但沒有成功。

我有一個包含數據的表格,每次更改此數據時,我都想制作淡入淡出動畫,以便它閃爍。 我假設我可以使用$watch來觀察元素是否發生變化但它不起作用。

這是我到目前為止得到的:

HTML:

<tbody md-body>
   <tr md-row ng-repeat="item in info.data">
      <td md-cell>{{item.name}}</td>
      <td md-cell>{{item.id}}</td>
      <td md-cell>{{item.thing2}}</td>
      <td md-cell>{{item.thing3}}</td>
      <td md-cell>{{item.thing4}}</td>
      <td md-cell>{{item.thing5}}</td>
   </tr>
 </tbody>

JS:

 $scope.info = {
  "data": [
    {
      name: "ELI 0001",
      id: "123",
      thing1: "thing",
      thing2: "thing",
      thing3: "thing",
      thing4: "thing",
      thing5:"thing",
    },
    {
      name: "ELI 0001",
      id: "123",
      thing1: "thing",
      thing2: "thing",
      thing3: "thing",
      thing4: "thing",
      thing5:"thing",
    },
  ]
};

我添加了這個函數來觀察整個數據集的變化,當它發生變化時我會發出警報。 我還添加了 var initialising因此它不會在加載后立即顯示。

var initializing = true
$scope.$watch('if',function(){
  if (initializing) {
    $timeout(function() { initializing = false; });
  } else {
    alert('hey')
  }
})

我的問題是,我怎樣才能讓它觀看所有單元格並執行一個僅對更改的數據執行動畫的類?

作為這個線程https://groups.google.com/forum/#!msg/angular/xZptsb-NYc4/rKAxJ3dQhbMJ ,我最終做的是:

app.directive('highlightOnChange', function() {
  return {
    link: function($scope, element, attrs) {
      attrs.$observe('highlightOnChange', function(val) {
        var el = $(element);
        el.removeClass('blink_me ');
        _.defer(function() {
          el.addClass('blink_me ')
        });
      });
    }
  };
});

也就是說,創建指令觀察屬性。 然后你可以像這樣使用它:

<td md-cell highlight-on-change="{{item.name}}"></td>
...

假設您的 css 類是:

.blink_me {
  animation: blinker 1s linear infinite;
}    
@keyframes blinker {
  50% {
    opacity: 0;
  }
}

我正在研究與@khateeb 類似的方法——除了我在元素的ng-model上使用$watch而不是在指令屬性上使用$observe 兩者都有效!

Plunker: https ://embed.plnkr.co/rZVjPmDft997Kmny1LS4/

片段:

 (function() { "use strict"; var app = angular .module('plunker', []) .controller('MainCtrl', MainCtrl) .directive('flashTd', flashTD); function flashTD($timeout, $compile) { return { scope: { ngModel: '=' }, link: function($scope, elem, attrs) { // Set a watch on ng-model to wait for value change $scope.$watch('ngModel', function(newVal, oldVal) { if (newVal !== oldVal) { // Flash row // var row = angular.element(elem[0].parentNode.parentNode); // Flash td var td = angular.element(elem[0].parentNode); // Using a timeout to simulate remote data change $timeout(function() { if (td.hasClass('flash')) { td.removeClass('flash'); } $timeout(function() { td.addClass('flash') }) }, 2000) } }) } } } MainCtrl.$inject = ["$scope"]; function MainCtrl($scope) { // Sample Data $scope.info = { "data": [{ name: "ELI 0001", id: "123", thing1: "thing", thing2: "thing", thing3: "thing", thing4: "thing", thing5: "thing", }, { name: "ELI 0001", id: "1234", thing1: "thing", thing2: "thing", thing3: "thing", thing4: "thing", thing5: "thing", }] }; } })()
 .editPencil:hover { cursor: pointer; } /* https://stackoverflow.com/questions/14607695/flashing-table-row */ @keyframes flash { from { background-color: #ffbe76; } to { background-color: inherit; } } .flash { animation: flash 1s 1; }
 <!DOCTYPE html> <html ng-app="plunker"> <head> <meta charset="utf-8" /> <title>AngularJS - Flash TD on Change</title> <link data-require="bootstrap@3.3.7" data-semver="3.3.7" rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" /> <link rel="stylesheet" href="style.css" /> <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script> <script data-require="bootstrap@3.3.7" data-semver="3.3.7" src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script> <script> document.write('<base href="' + document.location + '" />'); </script> <script data-require="angular.js@1.3.x" src="https://code.angularjs.org/1.3.20/angular.js" data-semver="1.3.20"></script> <script src="app.js"></script> </head> <body ng-controller="MainCtrl"> <div class="container"> <div class="row"> <div class="col-xs-12"> <div class="jumbotron text-center"> <h3>AngularJS - Flash TD on Change</h3> </div> </div> <div class="col-xs-12 col-sm-12 col-md-12"> <form class="form"> <div class="form-group"> <table class="table"> <thead> <tr> <th></th> <th>Name</th> <th>Id</th> <th>Thing1</th> <th>Thing2</th> <th>Thing3</th> <th>Thing4</th> <th>Thing5</th> </tr> </thead> <tbody> <tr ng-repeat="item in info.data"> <td class="editPencil glyphicon-pencil text-center" style="transform: rotate(45deg)" ng-click="editRow = !editRow"></td> <td> <span ng-hide="editRow">{{ item.name }}</span> <input type="text" class="input-sm" ng-model="item.name" ng-hide="!editRow" flash-td /> </td> <td> <span ng-hide="editRow">{{ item.id }}</span> <input type="text" class="input-sm" ng-model="item.id" ng-hide="!editRow" flash-td /> </td> <td> <span ng-hide="editRow">{{ item.thing1 }}</span> <input type="text" class="input-sm" ng-model="item.thing1" ng-hide="!editRow" flash-td /> </td> <td> <span ng-hide="editRow">{{ item.thing2 }}</span> <input type="text" class="input-sm" ng-model="item.thing2" ng-hide="!editRow" flash-td /> </td> <td> <span ng-hide="editRow">{{ item.thing3 }}</span> <input type="text" class="input-sm" ng-model="item.thing3" ng-hide="!editRow" flash-td /> </td> <td> <span ng-hide="editRow">{{ item.thing4 }}</span> <input type="text" class="input-sm" ng-model="item.thing4" ng-hide="!editRow" flash-td /> </td> <td> <span ng-hide="editRow">{{ item.thing5 }}</span> <input type="text" class="input-sm" ng-model="item.thing5" ng-hide="!editRow" flash-td /> </td> </tr> </tbody> </table> </div> </form> </div> </div> </div> </body> </html>

指令

在我的演示中,我正在閃爍td ,但是您可以通過使用注釋掉的row變量而不是td變量輕松地將其更改為閃爍目標的表行。

app.directive('flashTd', flashTD);

function flashTD($timeout, $compile) {
    return {
      scope: {
        ngModel: '='
      },
      link: function($scope, elem, attrs) {

        // Set a watch on ng-model to wait for value change
        $scope.$watch('ngModel', function(newVal, oldVal) {
          if (newVal !== oldVal) {
            // Flash row
            // var row = angular.element(elem[0].parentNode.parentNode);

            // Flash td
            var td = angular.element(elem[0].parentNode);

            // Using a timeout to simulate remote data change
            $timeout(function() {

              if(td.hasClass('flash')) {
                td.removeClass('flash');
              }

              $timeout(function() {
                td.addClass('flash')
              })

            }, 2000)

           }
        })
      }
    }
  }

HTML 元素

 <input type="text" class="input-sm" ng-model="item.thing2" ng-hide="!editRow" flash-td />

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