node.js - Javascript: Check whether key exists in an array of objects -

var _ = require('lodash');  var users = [   { 'id': '1', 'coins': false },   { 'id': '2', 'coins': false } ];  var = _.every(users, function(p){   if ('id' in p && 'coins' in p)     return true;   else     return false; }); console.log(a); 

the function works check in keys exists in array of objects. if 1 of object doesn't exists "id" or "coins" , return false.

is there better way write thie snippet of code? felt quite clumsy.

since you're in node.js, know have array.every() don't see reason lodash here or if/else. why not this:

var users = [   { 'id': '1', 'coins': false },   { 'id': '2', 'coins': false } ];  var allvalid = users.every(function(item) {     return 'id' in item && 'coins' in item; }); 

fyi, code assuming nobody has mysteriously added properties named id or coins object.prototype (which seems safe assumption here). if wanted protect against that, use item.hasownproperty('id') instead of in.