Dynamically select Drop Down in Jquery

Question

I have 4 Drop Downs.

Each drop by default has a --select-- option. Each box has a unique id. As you can see, the second drop down is disabled if the above drop

Answer 1

Assuming the option that has '--select--' as text has no value, just use val on the handler to check if the selected option is other than the empty

if(this.val() !== '') {
// enable following select
}