Feature : add 'size' option for custom dropdown height

[fabienwnklr]

new 'size' option to set dropdown size, can be a number to displayed items, or a simple CSS height (px, rem, em, vh)

I also added two tests for value as number of items displayed and CSS value

Default value is false so nothing change

Open to improvement and patch

[eduardo-mior]

Some time ago I needed this too.

I solved this with 1 line of CSS:

.my-selectize .selectize-dropdown-content {
     max-height: none !important;
}

or

.my-selectize .selectize-dropdown-content {
     max-height: 450px !important;
}

I particularly think that this kind of problem should be solved via CSS not JS.

[fabienwnklr]

Yes for simple height it's easily doable with CSS,I implemented that CSS values be accepted for better customization and flexibility. But first improvement and first idea it's to set a count of visible value, like 5 items visible etc.

Let's see what owner think about that !

[risadams]

Got a couple of questions here. Also Thanks for adding tests! :)