javascript - Check if an object exists within an array

Question

I have the following array, myArray and object, myObject. Is there a way I can determine if myObject exists within myArray?

const myArray = [ { id: 1, lastName: "Garland", firstName: "Darius", email: "[email protected]" },
                  { id: 2, lastName: "Sexton", firstName: "Collin", email: "[email protected]"  } ]

const myObject = { lastName: "Sexton", email: "[email protected]" }

question from:https://stackoverflow.com/questions/66047995/check-if-an-object-exists-within-an-array

Answer 1

You can make use of some with every to get the desired output.

const myArray = [ { id: 1, lastName: "Garland", firstName: "Darius", email: "[email protected]" }, { id: 2, lastName: "Sexton", firstName: "Collin", email: "[email protected]"  } ];

const myObject = { lastName: "Sexton", email: "[email protected]" };

const result = myArray.some(k=>Object.entries(myObject).every(([key,v])=>k[key]===v));

const result2 = myArray.some(k=>Object.entries(k).every(([key,v])=>myObject[key]===v));

console.log(result);
console.log(result2);