mechanisms

Question 1

An expression

Answer 1

A single line of code that evaluates to a value. The value may be an arithmetic operation, a logical comparison or a call to a method over an object

Question 2

Whe we use interpolation throught the expression:”{{name}}”

Answer 2

Angular searches for the required values for the evaluation, perform the evaluation and then replaces the expression with the result in the rendering process

Question 3

Property binding

Answer 3

Angular capability to keep the same value in a field of the memory and an element inner the DOM; to chage both values when one of the two changes.

Question 4

Property binding from class field to an DOM element property:

Answer 4

img [tag_property_name]=”ts_class_field”

Question 5

Event binding (rending) from a class method to an event in the DOM:

Answer 5

input (event_name)=”callTheMethodOrFunction($event)” // in the DOM

callTheMethodOrFunction(e:SomeEvent){ // event implementation } //inside our component

Question 6

Type Assertion Example

Answer 6

this.imgURL = ( e.target as HTMLInputElement).value