Angular Component Attribute Selector

Import Attribute Component from angularcore. Kebab-case or camelCase allows you to pick a case.

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Component selector.

Angular component attribute selector. Component selector. A CSS element selector is by far the most popular way to mark an Angular component. Element or attribute forces components to be used as either elements attributes or both not recommended A single prefix string or array of prefixes strings which have to be used in component selectors.

An Angular app contains a tree of Angular components. Attribute or attributevalue class. Angular components are a subset of directives always associated with a template.

The following example will show how we can bind these properties and their syntax. However a quick glance at the HTML code in the browsers developers tool reveals a slightly different truth. The change-colordirectivets file holds a selector property and a directive.

Element name or tag name. Here the directives selector is myHighlight. AppChangeColor export class ChangeColorDirective constructor.

SuperKalo changed the title Allow usage of attribute selectors and for Angualr 2 Material Components Allow usage of attribute selectors and for Angular 2 Material Components Mar 22 2017. Unlike other directives only one component can be instantiated for a given element in a template. Angular locates all elements in the template that have an attribute named myHighlight.

Export class OtherAttrComponent. A component must belong to an NgModule in order for it to be available to another component or application. ElementRef grants direct access to the host DOM element through its nativeElement property.

When we create a new component using Angular CLI the newly created component looks like this. Although an attribute selector is mainly meant to be used for Angular directives you can use it. The CSS selector for an attribute is the attribute name in square brackets.

So that when I do The dom generates the selector with these extra attributes. The selector is a property inside the angular component which identifies the directive in a template and triggers instantiation of the directive. True element my-prefix kebab-case.

1 attribute-nameAttribute Value 2 3. Directive requires a CSS selector to identify the HTML in the template that is associated with the directive. I would like to add attributes to the custom selector I create in the angular 2 component implementation.

Se demo plunker here. Component selector. Angular always retains the original element in the DOM tree.

A selector is used to identify each component uniquely into the component tree and it also defines how the current component is represented in the HTML DOM. Selectors can be declared using any of the following as per the angular documentation. The things we define in the selector must match in the view since we assign the custom directive there.

The usual way is the CSS type AKA element or tag selector. The Directive decorators configuration property specifies the directives CSS attribute selector appHighlight. What happens when using an attribute selector in Angular.

The selector has to be unique so that it doesnt override already existing elements or components available by a number of third-party packages. My-node add attributes to this selector template. Import Directive from angularcore.

Import ElementRef from angularcore. That way you can use name-of-the-attribute namely the CSS attribute selector such as. The traditional mental model of a component is that the HTML code provided in the template string simply is the component.

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