const members = [ {gender: 'M', name: 'John'}, {gender: 'M', name: 'Tim'}, {gender: 'F', name: 'Jenny'}, {gender: 'F', name: 'Alice'} ] findTim = (name) => { for(let member of members) { if(member.name === name && member.gender === 'M') { return member.name } // shorthand member = members.find(member => member.gender === 'M' && member.name === 'Tim');