Javascript's .includes function not working co

Question

This question already has answers here:

How to determine if Javascript array contains an object with an attribute that equals a given value? (23 answers)

Closed 2 years ago.

I have an array of objects which I'm using the .includes() function. I'm searching this array with an object that is in the array (Objects are identical). However there doesn't appear to be a match. I have replicated the problem in this fiddle. The code is also below. So what is the correct way to check if an array contains am object?

let list1 = [{
    name: "object1"
  },
  {
    name: "object2"
  },
  {
    name: "object3"
  },
  {
    name: "object4"
  }
]


if (list1.includes({
    name: "object1"
  })) {
  document.write('contains')
} else {
  document.write('doesnt')
}

Answer 1

You can try following

let list1 = [{name:"object1"},{name:"object2"},{name:"object3"},{name:"object4"}]


if (list1.some(({name}) => name === "object1")) {
  document.write('contains')
} else {
  document.write('doesnt')
}

Answer 2

You can't compare objects directly, but using this method , you can compare them with JSON.stringify.

let list1 = [{
    name: "object1"
  },
  {
    name: "object2"
  },
  {
    name: "object3"
  },
  {
    name: "object4"
  }
]

var contains = list1.some(elem =>{
  return JSON.stringify({name: "object1"}) === JSON.stringify(elem);
});
if (contains) {
  document.write('contains')
} else {
  document.write('doesnt')
}