Run results for: Reflect.has vs Direct Check

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Mobile Safari/537.36

Browser: Chrome Mobile 131

Operating system: Android

Device Platform: Mobile

Date tested: one month ago

Test name	Executions per second
Reflect	1863167.6 Ops/sec
Direct	3706815.2 Ops/sec

Script Preparation code:

appConfig = {
    name: 'John',
    age: 30,
    address: {
        street: '123 Main St',
        city: 'Anytown',
        state: 'CA',
        zip: '12345'
    },
    hobbies: ['reading', 'painting', 'hiking', 'cooking', 'traveling', 'photography', 'gaming', 'writing', 'yoga', 'dancing'],
    favoriteFoods: [{
            name: 'Pizza',
            type: 'Italian',
            ingredients: ['cheese', 'pepperoni', 'mushrooms', 'olives', 'tomatoes']
        },
        {
            name: 'Sushi',
            type: 'Japanese',
            ingredients: ['rice', 'nori', 'fish', 'vegetables', 'wasabi', 'soy sauce']
        },
        {
            name: 'Tacos',
            type: 'Mexican',
            ingredients: ['tortillas', 'beef', 'chicken', 'beans', 'lettuce', 'tomatoes', 'salsa', 'guacamole']
        }
    ],
    friends: [{
            name: 'Sarah',
            age: 28,
            address: {
                street: '456 Elm St',
                city: 'Anytown',
                state: 'CA',
                zip: '12345'
            },
            hobbies: ['reading', 'traveling', 'hiking'],
            favoriteFoods: [{
                    name: 'Pad Thai',
                    type: 'Thai',
                    ingredients: ['noodles', 'shrimp', 'tofu', 'peanuts', 'vegetables', 'spices']
                },
                {
                    name: 'Biryani',
                    type: 'Indian',
                    ingredients: ['rice', 'chicken', 'spices', 'yogurt', 'onions']
                }
            ]
        },
        {
            name: 'Tom',
            age: 32,
            address: {
                street: '789 Oak St',
                city: 'Anytown',
                state: 'CA',
                zip: '12345'
            },
            hobbies: ['gaming', 'photography', 'traveling'],
            favoriteFoods: [{
                    name: 'Burger',
                    type: 'American',
                    ingredients: ['beef', 'bun', 'cheese', 'lettuce', 'tomato', 'onion', 'pickles', 'ketchup', 'mustard']
                },
                {
                    name: 'Sushi',
                    type: 'Japanese',
                    ingredients: ['rice', 'nori', 'fish', 'vegetables', 'wasabi', 'soy sauce']
                }
            ]
        }
    ]
};

Tests:

Reflect
const key = 'name1'; if (Reflect.has(appConfig, key)) { console.log(appConfig[key]); }
Direct
const key = 'name1'; if (appConfig[key]) { console.log(appConfig[key]); }