JSFiddle - React, Tailwind, and code Playground

JavaScript

// DUMMY COLLECTION
var myCollection = [
    {_id: 101, name: 'bill'},
    {_id: 102, name: 'bob'},
    {_id: 103, name: 'ben'} 
];
    
    
// FUNCTION DEFINITION
var findById = function(collection, _id){
    var len = collection.length;
    
    for(var i = 0; i<len; i++){
        var item = collection[i];

        if(item._id === _id) return item;
    }

    return false;
};


// RUN
console.log( findById(myCollection, 103) );