Hello, Why this code is not working ? I spent a whole day looking for the issue.Hope someone can help me.

Question

In this code you can see that if the user clicked the [click] button more than one time,The message "already added" needs to be displayed in the console,But this code is not working.I don't know why Array.includes() is not working properly in this array of objects,please check the code.
https://code.sololearn.com/WzsBmd19E6ux/?ref=app

Answer 1

const btn= document.getElementById("btn");
let arr = [];

class Obj {
constructor(name, age) {
this.name = name;
this.age= age;
}
}

btn.addEventListener("click",() => {
let newObj = new Obj("roshan",18);
if(arr.includes(newObj.name) == false){
arr.push(newObj.name);
}else{
console.log("Already added");
}

console.log(arr); // To display

})

Answer 2

I mean how is the program supposed to know what make your object unique ?

Since you could for exaple have

Obj (“roshan”,20)
Obj (“roshan”,5)

The way you have it, its defaulting to comparing the address.

Answer 3

https://code.sololearn.com/WW9z0Ikg1Ck3/?ref=app

You are comparing new object with older ones js
Check that

Answer 4

One thing is You never set the object attributes

Answer 5

Bro, what if I do not use newObj.name?
I mean I need to add the whole object
and if that already exists then don't.

Answer 6

roshan roy
here is an idea:

https://code.sololearn.com/Wl8c8H849ae7/?ref=app