Why does my JavaScript code fail the test case I am running?

I am still a newbie in programming, and I decided to take up The Odin Project course. I decided to make my own code and see if it works, but so far, I am having errors with this specific problem.

Here is the code I made by myself.

 const removeFromArray = function(array,...toDelete) {
    const newArray=[];

    array.forEach(item=>{
        if(item != toDelete){
            newArray.push(item);
        }
    })
    return newArray; };

// Do not edit below this line 

module.exports = removeFromArray;

And this is the test case I am currently running it by. My code passes the first test case but it fails in the second. Can someone help me understand why? I am pretty sure it has something to do with my if statement but I don't entirely understand why it does not work.

describe('removeFromArray', () => {
  test('removes a single value', () => {
    expect(removeFromArray([1, 2, 3, 4], 3)).toEqual([1, 2, 4]);
  });
  test('removes multiple values', () => {
    expect(removeFromArray([1, 2, 3, 4], 3, 2)).toEqual([1, 4]);
  });
});

The problem is this

item != toDelete

toDelete is an array and you are comparing it with a number

you should search for item inside toDelete instead

!toDelete.includes(item)

The reason why it works with the first example is because, in javascript, 4 == [4] returns true. Your code would not have worked at all if you used === instead of ==.