Javascript array of objects check for key [duplicate]

Question

So my question how can I check this array of objects by "key" for eg I want to check if the key 3892 is there, I have tried with indexOf but no luck, I can't use a loop.

Answer 1

You can use some() and hasOwnProperty()

var array = [{3892: 'value'}, {1234: 'value'}];

var check = array.some(obj => obj.hasOwnProperty(3892));
console.log(check)