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css - Angular : How to *retrieve* css property from element in directive?

转载 作者:行者123 更新时间:2023-11-28 08:52:49 25 4
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我可以在指令中的元素上设置 css 属性。但是我无法使用相同的方法检索元素的 css 属性,它只返回一个空字符串。

即:var test = element.css("background-size");//不起作用!

我做错了什么?在下面的指令中查看我的链接处理程序:

link: function($scope, element, attrs) {

//debugger;

//handler for close button:
//its the first child within the parent element:
$scope.closeBtn = angular.element(element.children()[0]);


//save the background image so we can toggle its visibility:
$scope.backgroundImg = element.css("background","url(../../a0DK0000003XvBYMA0/assets/images/tabbed_panel_bkgd.png) no-repeat") ;//className:
element.css("background-position","0px 35px");
element.css("background-size", "924px 580px");

//above I was able to set css properties, but why can't I retrieve css properties like this??:
var test = element.css("background-size");

$scope.closeBtn.bind('click',function(){
TweenLite.to(element, .75, {top:"635px",ease:Power2.easeOut,
onComplete:function(){
$scope.opened = false;
$scope.closeBtn.css('opacity',0);
} });
})
//hander to raise tab panel:
element.bind('click', function() {
if(!$scope.opened){
//debugger;
$scope.closeBtn.css('opacity',1);
TweenLite.to(element, .75, {top:"150px",ease:Power2.easeOut});
$scope.opened = true;
}
});

}

最佳答案

我从我的问题后退了一步,意识到如果我正在尝试像以前使用 JQuery 那样检索 css 属性,那么我可能没有以“Angular 方式”应用解决方案。我原来的问题是我需要存储 css 属性,所以我可以稍后重新应用它们。因此,我没有使用这种方法,而是使用 ng-class 指令来切换类,这样我就不必存储任何东西。

<html>
<body>

<tabbed-Panel ng-class="btmTabPanelClass" >
<div ng-show="opened" class="tabPanelCloseBtn"> </div>
<tabs>
<pane ng-repeat="pane in panes" heading="{{pane.title}}" active="pane.active">
<div class ="tabPanelContent" ng-include src="activeContent()"></div>
</pane>
</tabs>

</tabbed-Panel>
</div
</body>
</html>



angular.module('directives', ['baseModule','ui.bootstrap'])


.directive('tabbedPanel',['$animator',function($animator) {

//debugger;
return {
//scope:{},
restrict:"E",

//add controller to here
controller:function($scope){
//debugger;

$scope.bTabClicked = 0;
$scope.curTabIdx = 0;
$scope.opened = false;
$scope.closeBtn = null;

$scope.arClasses = ["bottomTabPanel", " bp_off"];
$scope.btmTabPanelClass = $scope.arClasses[0] + $scope.arClasses[1] ;


//get the tabs from the flows.json so we can create a model for the tab panel!
$scope.panes = $scope.flows[$scope.getCurFlowIdx()].array_data[$scope.getCurPageIdx()].tab_data;

//first tab is active by default:
//$scope.panes[0].active = true;

//set the content for the current tab:
$scope.activeContent = function() {
for (var i=0;i<$scope.panes.length;i++) {

if ($scope.panes[i].active) {
$scope.curTabIdx = i;
return $scope.panes[i].content;
}
}
};


//tab click watcher (to make sure user clicks on tab and not tab container):
$scope.$watch('activeContent()', function(paneIndex) {
++$scope.bTabClicked;
});

//--------------------------------------------------
},
link: function($scope, element, attrs) {

//debugger;

//handler for close button:
//its the first child within the parent element:
$scope.closeBtn = angular.element(element.children()[0]);

$scope.closeBtn.bind('click',function(){
// set all tabs to inactive:

$scope.bTabClicked = 0;

for (var i=0;i<$scope.panes.length;i++)
$scope.panes[i].active = false;

TweenLite.to(element, .75, {top:"635px",ease:Power2.easeOut,
onComplete:function(){
$scope.opened = false;
$scope.btmTabPanelClass = $scope.arClasses[0] + $scope.arClasses[1] ;
$scope.$apply(); //force binding to update
$scope.bTabClicked = 0;
} });
})

/*hander to raise tab panel:*/
element.bind('click', function() {
if(!$scope.opened && $scope.bTabClicked){
//debugger;
TweenLite.to(element, .75, {top:"150px",ease:Power2.easeOut});
$scope.opened = true;
$scope.btmTabPanelClass = $scope.arClasses[0] ;
$scope.$apply(); //force binding to update
}
else
$scope.bTabClicked = 0;

});

}
};
}]);

关于css - Angular : How to *retrieve* css property from element in directive?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/16945784/

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