how can we create ngELSE
directive as same as ngIF
directive?
below code for ngIfDirective
. Shall we customize the code for ngELSE
?
var ngIfDirective = ['$animate', function($animate) {
return {
multiElement: true,
transclude: 'element',
priority: 600,
terminal: true,
restrict: 'A',
$$tlb: true,
link: function($scope, $element, $attr, ctrl, $transclude) {
var block, childScope, previousElements;
$scope.$watch($attr.ngIf, function ngIfWatchAction(value) {
if (value) {
if (!childScope) {
$transclude(function(clone, newScope) {
childScope = newScope;
clone[clone.length++] = document.createComment(' end ngIf: ' + $attr.ngIf + ' ');
// Note: We only need the first/last node of the cloned nodes.
// However, we need to keep the reference to the jqlite wrapper as it might be changed later
// by a directive with templateUrl when its template arrives.
block = {
clone: clone
};
$animate.enter(clone, $element.parent(), $element);
});
}
} else {
if (previousElements) {
previousElements.remove();
previousElements = null;
}
if (childScope) {
childScope.$destroy();
childScope = null;
}
if (block) {
previousElements = getBlockNodes(block.clone);
$animate.leave(previousElements).then(function() {
previousElements = null;
});
block = null;
}
}
});
}
};
}];
Normally we use like this
normal if-else
if(video == video.large){
<!-- code to render a large video block-->
}
else{
<!-- code to render the regular video block -->
}
AngularJS ng-if
<div ng-if="video == video.large">
<!-- code to render a large video block-->
</div>
<div ng-if="video != video.large">
<!-- code to render the regular video block -->
</div>
But if you are too specific that you want a directive like ng-if
, ng-else-if
, and ng-else
then use ng-elif
<div ng-if="someCondition">
...
</div>
<p>
Some random junk in the middle.
</p>
<div ng-else-if="someOther && condition">
...
</div>
<div ng-else-if="moreConditions">
...
</div>
<div ng-else>
...
</div>