Making multiple drop down boxes appear
Hello everyone! This is my first post and I'm pretty new to advanced HTML/CSS, so please bear with me.
As part of a web page I'm helping develop, there is going to be a page that generates a table comparing certain properties of a given family of organisms. Before I can create the table, I want to let the user decide if they want to sort the resulting table by any of the properties.
I want to make it so there will initially be one drop down box that has all the properties listed, but I want more to appear if the user actually selects a property so there can be secondary, tertiary, etc. sorting capabilities, like there are in Excel spreadsheets. The number of properties is dynamic, so I want as many sort boxes as needed to appear, and if there is a way to not include previously selected properties in subsequent boxes, that would be excellent!