For pure educational and curiosity purposes, I am trying to create an element-wrapper object that allows me to tack-on my own properties and methods to an element. The behavior I'm trying to simulate is basically this:
// get a button element to wrap
const button = document.querySelector('button');
// some function that wraps new properties/methods around a given element
function wrap(element) {
this.customName = 'John';
this.customAge = 100;
this.printName = function() {
console.log(this.customName);
}
// ...
// ...somehow inherit element fields...
// ...
}
// wrap the button element
const customElement = new wrap(button);
// custom behavior:
console.log(customElement.customAge) // output => 100
customElement.printName() // output => 'John'
// legacy behavior
console.log(customElement.clientHeight) // output => client height
customElement.remove() // => should still call 'remove' on the element
So, here I should be able to add my own methods/properties but still access the original fields normally. Is this even possible?
I'm using a constructor function here as an example just to demonstrate the intended behavior, but I don't actually know if this would be relevant for the solution. I'm new to Javascript and I have done a ton of research on prototypes and classes, but I'm still confused on what approach I would take here.
Edit: As Brad pointed out in the comments, I also tried this implementation using classes:
class MyButton extends HTMLButtonElement {
constructor() {
super();
this.customName = 'John';
this.customAge = 100;
}
printName() {
console.log(this.customName);
}
}
const myBtn = new MyButton();
But this resulted in the error: Uncaught TypeError: Illegal constructor
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