How to set value for the form element using mootools

Question

I have a form that have input element and the select element with multi select. so how can I set value for the input element and select element in mootools.

Answer 1

For dropdown:

$('idOfSelect').selectedIndex = x;

For text:

 $('IdOfInput').value = 'Foo';

Answer 2

basically - element.get("value"); returns the value for all inputs, selects and textareas, .set("value", value); to set them (except for multiples)

it's more complicated for select with multiple - the above returns the FIRST selected only, you need to do element.getSelected().get("value") to recieve an array of values (.getSelected() on its own will return the pointers to the actual option elements)

and finally, to set multiple selections, only way i can think of atm is to write your own element prototype that walks through child nodes with the values as specified and does .set("selected", "selected")

let me know if you need any help writing the latter