Question

How I can write the following without &&?

if(a == 1 && b == 2) { ... }

Can I create a function for the operator?

Answer 1

Create a function to encapsulate your operation:

function compare(a, b, value1, value2) {
    if(a === value1) {
        if(b === value2) {
            return true;
        }
    }
    return false;
}

And you can use it like so:

if(compare(a, b, 1, 2)) {
    // Your action..
}