Question

This code works as I need:

$('input[class="plus"], input[class="minus"]').mousedown(function () {       
        //..doing something
    });

---

What I wanted is something like:

$('input[class="plus minus"]').mousedown(function () {            
        //..doing something
    });

or like:

$('input[class="plus"][class="minus"]').mousedown(function () {            
        //..doing something
    });

The selector should choose any input, having either plus class or minus.

There must be some other syntax, but I don’t know one.

Answer 1

I’d recommend:

$('input.plus, input.minus').mousedown(function () {            
    //..doing something
});

…so that other classes on the inputs don’t make you skip them. If you use the attribute equals selector (your input[class="plus"]), it will only match if the only class on the input is "plus". So it would match <input class="plus"> but not <input class="plus foo">. Normally you want the flexibility of having other classes on the element.

Alternately, you could do this:

$('input').filter('.plus, .minus').mousedown(...);

…but it would be likely to be less efficient: First it would make jQuery look up all input elements, and then separately filter the result to just the ones with those classes. So I wouldn’t recommend it.