multi select - Use jQuery to check for number of options NOT selected in a multiselect -

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i have multiselect has huge list , i'm not allowed have option says "all".

but in background still want check see if selected or not. saw/had snippet of code did before can't find it. remember doing checking see if number of options not selected equal 0, knew options selected.

i want check on 1 line if can:

$("#my-multiselect:not(:selected)").length === 0

but $("#my-multiselect:not(:selected)").length returning 1 or 0 true or false imagine. using :not() incorrectly? or else need exact count?

you missing space:

$("#my-multiselect :not(:selected)").length === 0

because want select options inside #my-multiselect element.


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