[英]Blink cell on data change AngularJS
所以我是 Angular 和 JS 的新手,我一直在尝试做一些简单的事情,但没有成功。
我有一个包含数据的表格,每次更改此数据时,我都想制作淡入淡出动画,以便它闪烁。 我假设我可以使用$watch
来观察元素是否发生变化但它不起作用。
这是我到目前为止得到的:
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",
},
]
};
我添加了这个函数来观察整个数据集的变化,当它发生变化时我会发出警报。 我还添加了 var initialising
因此它不会在加载后立即显示。
var initializing = true
$scope.$watch('if',function(){
if (initializing) {
$timeout(function() { initializing = false; });
} else {
alert('hey')
}
})
我的问题是,我怎样才能让它观看所有单元格并执行一个仅对更改的数据执行动画的类?
作为这个线程https://groups.google.com/forum/#!msg/angular/xZptsb-NYc4/rKAxJ3dQhbMJ ,我最终做的是:
app.directive('highlightOnChange', function() {
return {
link: function($scope, element, attrs) {
attrs.$observe('highlightOnChange', function(val) {
var el = $(element);
el.removeClass('blink_me ');
_.defer(function() {
el.addClass('blink_me ')
});
});
}
};
});
也就是说,创建指令观察属性。 然后你可以像这样使用它:
<td md-cell highlight-on-change="{{item.name}}"></td>
...
假设您的 css 类是:
.blink_me {
animation: blinker 1s linear infinite;
}
@keyframes blinker {
50% {
opacity: 0;
}
}
我正在研究与@khateeb 类似的方法——除了我在元素的ng-model
上使用$watch
而不是在指令属性上使用$observe
。 两者都有效!
Plunker: https ://embed.plnkr.co/rZVjPmDft997Kmny1LS4/
片段:
(function() { "use strict"; var app = angular .module('plunker', []) .controller('MainCtrl', MainCtrl) .directive('flashTd', flashTD); function flashTD($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>
在我的演示中,我正在闪烁td
,但是您可以通过使用注释掉的row
变量而不是td
变量轻松地将其更改为闪烁目标的表行。
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)
}
})
}
}
}
<input type="text" class="input-sm" ng-model="item.thing2" ng-hide="!editRow" flash-td />
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