I was wondering if there were no compatibility issues when ng-switch-when and ng-class are using on the same element like in this sample.
I'm trying to dynamically change the class of this four elements but for some reasons this isn't working on all of them, just on the one who's currently displayed.
Does anyone know what's going on here?
<div>
<div ng-switch="sw" ng-init="sw=1">
<div ng-switch-when="1" ng-class="oneClassOrAnother()"></div>
<div ng-switch-when="2" ng-class="oneClassOrAnother()"></div>
<div ng-switch-when="3" ng-class="oneClassOrAnother()"></div>
<div ng-switch-when="4" ng-class="oneClassOrAnother()"></div>
</div>
<div>
<button ng-click="goTo(1)">1</button>
<button ng-click="goTo(2)">2</button>
<button ng-click="goTo(3)">3</button>
<button ng-click="goTo(4)">4</button>
</div>
</div>
Switch between divs.
$scope.goTo = function(x) {
$scope.sw = x;
}
Return one class or the other one.
$scope.oneClassOrAnother= function() {
if (...) return "class1";
else return "class2";
}
Many thanks.
It doesn't look like you're using the ng-class syntax correctly. Try something like this:
<div ng-class="{class1: oneClassOrAnother()}" ng-switch-when="1">1</div>
Where oneClassOrAnother() returns either true or false and "class1" is the name of the class.
Here's a working example of using ng-class and ng-switch-when together: http://plnkr.co/edit/n86SKEktRcPnBy05o8eZ?p=preview
Angular ngClass docs: https://docs.angularjs.org/api/ng/directive/ngClass
I think its all fine with your code, look at this plunk, I reproduced it and its working. Compare this to your code, maybe you have forgotten about controller?
http://plnkr.co/edit/Lz7L3S?p=preview
Only difference i guess is the fact, that I initiated sw from controller, not from view.
<div ng-switch on="sw">
Related
I have this code bellow and is working well, I would like to know how can make this variable show in my root-scope?
the problem is I am using now different controllers and directives
so:
if I put this in directive1:
Show
<button ng-click="showme=false">Hide</button>
and this in directive2 does not work:
<div class="wrapper">
<p ng-hide="showme">It will appear here!</p>
<h2 ng-show="showme">This is mah content, yo!</h2>
</div>
full code working if in the same directive html + angular
<div ng-app="">
<h1>Ng-show & ng-hide</h1>
<p class="description">Click on the "show"-link to see the content.</p>
Show
<button ng-click="showme=false">Hide</button>
<div class="wrapper">
<p ng-hide="showme">It will appear here!</p>
<h2 ng-show="showme">This is mah content, yo!</h2>
</div>
</div>
I heard about I can use something like: $rootScope but how I can implement this in that case? thank you.
You need to make sure show is set on the $rootScope. Convenient place for this is run block:
.run(['$rootScope', function($rootScope) {
$rootScope.show = false
}])
After that all scopes will inherit show from its parent.
Another option. You can actually directly refer to $rootScope from any of your template, this is probably simplest solution:
Show
<button ng-click="$root.show = false">Hide</button>
I'm trying to do a very simple thing. I'm displaying a list of values with Edit links beside them. Clicking the edit link reveals a form that lets you update the value.
(I've simplified the question so the items just have one field "name". My actual use case has more fields, but is canonically equivalent.)
I've run into something that looks like a bug in Angular, but given my limited experience with it, I'm not so sure. Here's how I'm trying to do it:
<div ng-repeat-start="item in items" ng-controller="ItemCtrl as ctrl" ng-hide="ctrl.isEditing">
<span>Name: {{item.name}}.</span>
<a href='#' ng-click='ctrl.startEditing()'>Edit</a>
</div>
<div ng-repeat-end ng-show="ctrl.isEditing">
<input type='text' ng-model='item.name'/>
<a href='#' ng-click='ctrl.save()'>Save</a>
</div>
My controller looks like this:
app.controller('ItemController', function() {
this.isEditing = false;
this.startEditing = function() { this.isEditing = true; }
this.save = function() { this.isEditing = false; }
});
Clicking on Edit link calls the right controller function, and the first div hides. But the second div does not hide.
When I rearrange the code to look like this (essentially wrapping the two divs with a wrapper element), all is well.
<div ng-repeat="item in items" ng-controller="ItemCtrl as ctrl">
<div ng-hide="ctrl.isEditing">
<span>Name: {{item.name}}.</span>
<a href='#' ng-click='ctrl.startEditing()'>Edit</a>
</div>
<div ng-show="ctrl.isEditing">
<input type='text' ng-model='item.name'/>
<a href='#' ng-click='ctrl.save()'>Save</a>
</div>
</div>
Any idea what is technically wrong with the first version? Note that the <input> boxes do get populated with the right values from item.name.
PS: There's a reason why I'm trying to keep the two divs siblings: in my use case, they are actually implemented as two trs which are supposed to appear right below each other in a table.
It's not a bug from angular but it is quite logical.
<div ng-repeat-start="item in items" ng-controller="ItemCtrl as ctrl" ng-hide="ctrl.isEditing">
<span>Name: {{item.name}}.</span>
<a href='#' ng-click='ctrl.startEditing()'>Edit</a>
</div>
<div ng-repeat-end ng-show="ctrl.isEditing">
<input type='text' ng-model='item.name'/>
<a href='#' ng-click='ctrl.save()'>Save</a>
</div>
If you see the above code you have injected controller only to the first div so obviously sibling div doesn't know what is ctrl or ItemCtrl until and unless you do as in you second way.
So if you want to achieve it as sibling, if you are using routing then add the controller attribute in your route path.
So that the controller will be active for that entire template and you can achieve what you want.
Hope it helps.
Thats because controller has its own scope. When you placed controller ONLY on your first div controllers' scope is limited to only this one div. When you wrapped both your divs inside another and place controller on wrapper, controllers' scope now is all that inside this wrapper. So in this case this works fine and this is not the angular bug
I am trying to implement some directive, which will be based on the value of one variable in other Service. Here is my code:
if (this.SomeService.variable.condition){
element.show();
} else {
element.hide();
};
However, it is called only once, when the page is bootstraped. How can I make it so that if the variable changes, the element shows/hides? Is there any way to do it without watcher?
You can use ng-show / ng-hide that are angularjs construct used to hide or show a particular piece of HTML.
For example:
<div ng-show="true">HELLO I AM THE FIRST DIV</div>
<div ng-hide="true">HELLO I AM THE SECOND DIV</div>
will return something like
HELLO I AM THE FIRST DIV
Inside ng-show you can put watherver kind of variable so then if your javascript is something like this:
angular.module('mymodule').controller('MyCtrl',[function(){
var self = this;
self.isVisible = true;
}]);
you can use that variable in your code:
<div class="container" ng-controller="MyCtrl as c">
<div ng-show="c.isVisible">HELLO I AM THE FIRST DIV</div>
<div ng-hide="c.isVisible">HELLO I AM THE SECOND DIV</div>
</div>
And the result is the same
This seems like such a simple thing, but I am just not able to wrap my head around how to do it.
Here is what I want:
<my-card>
<my-profile>
<my-address>101 Some St.</my-address>
<my-phone>555-555-5555</my-phone>
<my-description>I have a great profile</mydescription>
</my-profile>
<my-option doclick="Option(1)">Do One</my-option>
<my-option doclick="Option(2)">Do Two</my-option>
</my-card>
That turns into something like this:
<div class="card">
<div class="profile">
<div class="Address">101 Some St.</div>
<div class="Phone">555-555-5555</div>
<div class="Description">I have a great profile.</div>
</div>
</div>
I'm not sure what your data look like, but you simply use Angular tokens in your directive:
<my-card>
<my-profile>
<my-address>{{user.address}}</my-address>
<my-phone>{{user.phone}}</my-phone>
<my-description>{{user.description}}</mydescription>
</my-profile>
<my-option doclick="Option(1)">Do One</my-option>
<my-option doclick="Option(2)">Do Two</my-option>
</my-card>
I am new to AngularJS and i dont know is it possible to delete all scope variables of a controller.I am using ng-controller with ng-repeat, like this.
<div ng-controller="main">
<div ng-repeat="x in list" ng-controller="test">
<input type="text" ng-model="text">
<span ng-click="remove($index)"> x </span>
<div>
</div>
JS
myapp.controller('main',function($scope){
$scope.list=[1,2,3,4]
})
myapp.controller('test',function($scope){
$scope.text="untitiled"
})
I want to remove the clicked scope.Can anyone help me or please suggest me a better way. Thanks
The question isn't very clear, but it looks like you may want to remove the item after clicking. Since you are passing into the remove function the index, you can splice it out. The DOM will autoupdate and remove that from the list:
$scope.remove = function(i) {
$scope.list.splice(i,1);
console.log($scope.list);
}
In the event you are doing something different in that you only want to hide it, you would push the index onto another array and then use something like ng-show or ng-hide.
$scope.remove2 = function(i) {
$scope.hideList.push(i);
}
$scope.shouldHide = function(i) {
return $scope.hideList.indexOf(i)!=-1;
}
<div ng-repeat="number in list2" >
{{number}}
<span ng-hide='shouldHide($index)' ng-click="remove2($index)"> x </span>
</div>
Here is a simple example of both scenarios. In real life, usually we are dealing with arrays of objects and what you might be doing is setting a property on one of the objects to hidden and controlling it that way.
Demo: http://plnkr.co/edit/G7UINKUCBJ4yZhQNtuJ2?p=info
If you actually want to remove all the keys from the scope:
function removeKeys() {
for(key in $scope) {
if (key.substr(0,1)!='$' && key!='this')
delete $scope[key];
}
}