Are javascript object keys case sensitive?

Question

I was trying to fix duplicate items in an array on javascript by the means of object keys. The loop added \'virtual reality\' and \'Virtual Reality\' in the same object as d

Answer 1

While object properties are strings and they are case sensitive, you could use an own standard and use only lower case letters for the access.

You could apply a String#toLowerCase to the key and use a function as wrapper for the access.

Example with a wrapper object.

function insert(key, value) {
    if (!wrapper[key.toLowerCase()]) {
        wrapper[key.toLowerCase()] = key;
    }
    data[wrapper[key.toLowerCase()]] = value;
}

var data = {},
    wrapper = {};

insert('Foo', 'bar');
console.log(data);
insert('FOO', '42');
console.log(data);