How to get values from form.html(textbox) to test.html(drop down list)?

[Pei Ling]

Hi,

I would like to ask how do I get the value from a textbox from form.html which contains my iframe and copy the value into another page, test.html when a button in test.hml is clicked.?

Thank you in advance!

[Pei Ling]

As in when a button in test.hml is clicked.