JSFiddle - React, Tailwind, and code Playground

JavaScript

var ID = 4

var arr = [
        { id : 1, name: "a" },
        { id : 2, name: "b" },
        { id : 3, name: "c" },
        { id : 4, name: "d" }
]

var result = arr.filter(function( obj ) {return obj.id == ID;});
alert(result[0].name);

var arr2 = [
    [
        { id : 1, name: "a" },
        { id : 2, name: "b" }
    ],
    [
        { id : 3, name: "c" },
        { id : 4, name: "d" }
    ]
]

var result = arr2.filter(function( obj ) {return obj.id == ID;});
alert(result[0].name);