someone should check out this my js code. ERROR: instead of 3 iteration output, it output 9 iterations. just bordering me since.

let z = [
    {id : 1 , age : 20},
    {id : 2 , age : 15},
    {id : 3 , age : 30}
]

let Obj = {
    oder1:{
        id : 1,
        name : 'Ben',
        club : 'chelsea',
        food : 'pie',
        stat : 500
    },
    oder2:{
        id : 4,
        name : 'Bolu',
        club : 'ManU',
        food : 'saws',               
        stat : 700
    },

    oder3:{
        id : 2,
        name : 'Julie',
        club : 'ManU',
        food : 'saws',               
        stat : 700
    }
                                         
}

z.filter(value => {
    for (const key in Obj) {
    if (Obj.hasOwnProperty(key)) {
        const element = Obj[key];
        value.id===element.id ? console.log(`hi ${element.name}. Id is correct`) : console.log(`invalid Id ${!String()}`);
    }
}});

I suggest to save it again and run

array.filter() must return a boolean you are not returning anything guy put your return in the for() state ment where your checked if return element.id === value.id ? whatever : whatever

i hope it works cause no light for me to test wetin i talk but i just observe u didnt return anything

it as being fixed. Thanks to your responds.