How does XOR work for two binaries with more than one digit?

I learned that the XOR operator works as or unique , i.e. the end result is only1 when only one of the operators is equal to 1.

The truth table illustrates this well:

My question is: how does the XOR operator work with numbers other than just 1 bit?

Example: 110 XOR 011 should return which result?

In JavaScript (or any other language) I can see that the result should be 101, but how to get to this result?

var a = 6; // 110
var b = 3; // 011
var res = (a ^ b).toString(2);

log('a:', a.toString(2));
log('b:', b.toString(2));
log('res.:', res);

// Apenas pra melhor visualização
function log(label, valor) {
    var lb = padLeft(' ', 5, label);
    var val = padLeft('0', 3, valor, true);

    console.log(lb, val);
}

function padLeft(padChar, padSize, str, left) {
    const pad = padChar.repeat(padSize);
    if(left)
        return (pad + str).slice(-padSize);
    else
        return (str + pad).substring(0, padSize);
}