What is require in AngularJS directive?
What is require in AngularJS directive?
First of all, notice the require option in directive definition. It says to AngularJS that in order to fulfill it’s job, itemWidget requires another directives to be present in HTML. In other words, require option specifies the dependencies. A directive can be dependent on more than one directives.
What is directive in AngularJS?
Directives are markers on DOM element which tell Angular JS to attach a specified behavior to that DOM element or even transform the DOM element with its children. Simple AngularJS allows extending HTML with new attributes called Directives.
How do you trigger a directive in AngularJS?
- Add “editMode” property to TODO model.
- Instead of passing in just todo.title to directive’s scope, passing in the whole TODO object, which is inline-edit=”todo” in index.html.
- In inline-edit.html, change every editMode to model.editMode (and every model to model.title to display title correctly)
Which directive uses AngularJS application?
The ng-app directive starts an AngularJS Application. It defines the root element. It automatically initializes or bootstraps the application when the web page containing AngularJS Application is loaded. It is also used to load various AngularJS modules in AngularJS Application.
What is directive in AngularJS with example?
AngularJS Directives
| Directive | Description |
|---|---|
| ng-bind | Replaces the value of HTML control with the value of specified AngularJS expression. |
| ng-repeat | Repeats HTML template once per each item in the specified collection. |
| ng-show | Display HTML element based on the value of the specified expression. |
How does directive work in AngularJS?
Directives are markers on a DOM element that tell AngularJS to attach a specified behavior to that DOM element or even transform the DOM element and its children. In short, it extends the HTML. Most of the directives in AngularJS are starting with ng- where ng stands for Angular.
What is NG if in AngularJS?
Overview. The ngIf directive removes or recreates a portion of the DOM tree based on an {expression}. If the expression assigned to ngIf evaluates to a false value then the element is removed from the DOM, otherwise a clone of the element is reinserted into the DOM.
What is isolated scope in AngularJS?
Isolated scope directive is a scope that does not inherit from the parent and exist on its own. Scenario: Lets create a very simple directive which will show the object from the parent controller.
Which directive do we use to inform AngularJS about the parts controlled by it?
The ngRef attribute tells AngularJS to assign the controller of a component (or a directive) to the given property in the current scope. It is also possible to add the jqlite-wrapped DOM element to the scope. The ngRepeat directive instantiates a template once per item from a collection.
What are angular directives?
AngularJS Directives are a combination of HTML template markup (i.e. attributes, elements and CSS class) and supporting the JavaScript code.
What kind of things can you do with AngularJS?
One of the many benefits of AngularJS is that it can be used as a standalone JavaScript Framework.
What is ng-option directive in Angular JS?
The ng-options Directive in AngularJS is used to build and bind HTML element with options to a model property . It is used to specify in a list. It is designed specifically to populate the items of a dropdown list.
