How can I insert the value associated with a button in a text input area on the same page at runtime?

Question

I searched a bit and came across getElementbyId.() but I don't know why it isn't working. PLEASE help. Also mention the syntax if you will.

Answer 1

It's syntax like looks this:
document.getElementById(the element's id);

I think you put dot before bracket (that's your problem). Also use this always in function of click (not before that).

Answer 2

if you want to change value from that in the <input value="Nigeria is awesome "> use onclick=" function()" and change the value if(onclick()) in the functions definition

Answer 3

@Aydin should I use the id of text input box or that of the button?