Angularjs：如何*从指令中的元素中检索* css属性？
发布时间：2020-12-17 16:59:05 所属栏目：安全 来源：网络整理
导读：我可以在指令中的元素上设置css属性.但我无法使用相同的方法检索元素上的css属性,它只返回一个空字符串. 即：var test = element.css(“background-size”); //不起作用！ 我究竟做错了什么？请参阅我的指令中的链接处理程序： link: function($scope,elemen
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我可以在指令中的元素上设置css属性.但我无法使用相同的方法检索元素上的css属性,它只返回一个空字符串.
即：var test = element.css(“background-size”); //不起作用！ 我究竟做错了什么？请参阅我的指令中的链接处理程序： link: function($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,{top:"150px",ease:Power2.eaSEOut});
$scope.opened = true;
}
});
}
解决方法
我从我的问题中退后一步,意识到如果我试图检索像JQuery一样的css属性,那么我可能不会以“角度方式”应用解决方案.我最初的问题是我需要存储css属性,以便稍后重新应用它们.因此,我使用ng-class指令来切换类,而不是那种方法,所以我不必存储任何东西.
<html>
<body>
<tabbed-Panel ng-class="btmTabPanelClass" >
<div ng-show="opened" class="tabPanelCloseBtn"> </div>
<tabs>
<pane ng-repeat="pane in panes" heading="{{pane.title}}" active="pane.active">
<div class ="tabPanelContent" ng-include src="activeContent()"></div>
</pane>
</tabs>
</tabbed-Panel>
</div
</body>
</html>
angular.module('directives',['baseModule','ui.bootstrap'])
.directive('tabbedPanel',['$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,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,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,ease:Power2.eaSEOut});
$scope.opened = true;
$scope.btmTabPanelClass = $scope.arClasses[0] ;
$scope.$apply(); //force binding to update
}
else
$scope.bTabClicked = 0;
});
}
};
}]);
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