Add-ons / Disable Macro

Syntax: <<disable [expression]>>...<</disable>>

The first interactive element (such as a button or text input) between the macro tags will be disabled. If an expression is passed to the macro, it will be evaluated. If the evaluated expression yields a truthy result, the interactive element will be disabled. If the expression is falsy, the element will not be disabled.

Usage:

This button should be disabled:
<<disable>><<button "Submit">><</button>><</disable>>

This textbox should also be disabled:
<<disable 1 === 1>><<textbox "$name" "">><</disable>>

This listbox, too:
<<disable true>><<listbox '$whee'>><<optionsfrom ["1", "2", "3"]>><</listbox>><</disable>>

This button should ''not'' be disabled:
<<disable false>><<button "Submit">><</button>><</disable>>

This textbox should ''not'' be disabled:
<<disable 1 === 0>><<textbox "$name" "">><</disable>>

READ: Documentation