TypeScript add Object to array with push

Question

I would just  like to add an object of an class  Pixel  to an array   export class Pixel     constructor x  number  y  number         The class has the following attribute   pixels  Pixel           The following code looks logical for me  but does not push the actual objects to my array pixels   this pixels push new Pixel x  y      Only this works   var p    x x  y y   this pixels push p     Could anybody explain me why the above statement does not work

User · Accepted Answer

If your example represents your real code, the problem is not in the push, it's that your constructor doesn't do anything.

You need to declare and initialize the x and y members.

Explicitly:

export class Pixel {
    public x: number;
    public y: number;   
    constructor(x: number, y: number) {
        this.x = x;
        this.y = y;
    }
}

Or implicitly:

export class Pixel {
    constructor(public x: number, public y: number) {}
}

User · Answer

class PushObjects       testMethod    Array lt number gt               declaration and initialisation of array onject         var objs  number      1 2 3 4 5 7             push the elements into the array object         objs push 100             pop the elements from the array         objs pop            return objs              let pushObj   new PushObjects      create the button element from the dom object  let btn   document createElement  button      set the text value of the button btn textContent    Click here     button click event btn onclick   function            alert pushObj testMethod          document body appendChild btn

[arrays] TypeScript add Object to array with push

Examples related to arrays

Examples related to typescript