Question

i had this code:

    $("#source_lang, #targ_lang").each(function(index, element) {

        if ($(this +'option:selected').length== 0) {
        //some code 
        }
        }

I want to display error messages when none of items on the lists is selected.
This gives me no results(the error message doesn’t show).

Answer 1

$("#source_lang, #targ_lang").each(function() {
    if (this.selectedIndex === 0) {
        //some code 
    }
}

or – without using the each – you could also check

if ($("#source_lang, #targ_lang").find('option:selected').length < 2) {
    ...
}

(this means that at least one select has not been selected)