JSFiddle - React, Tailwind, and code Playground

JavaScript

Obj = { 
    1 : { 
        name : 'bob',
        dinner : 'pizza'
    },
    2 : { 
        name : 'john',
        dinner : 'sushi'
    },
    3 : { 
        name : 'larry',
        dinner : 'sushi'
    }
}


function getSushiObjects(Obj){
    var foundObjects = [];
    for (prop in Obj){
        if (Obj[prop]['dinner'] === 'sushi'){
            foundObjects.push(Obj[prop]);
        }
    }
    return foundObjects;
}

var allSushiObjects = getSushiObjects(Obj);
console.log(allSushiObjects[0]);
console.log(allSushiObjects[1]);