How to add a condition that can give me a result right on the web page?

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Javascript

HTML

I just wanted to jest out a hack tool... (not completed yet).. and I what tag/script I should write that can create a way to show/appear different things, i.e. if a user clicks on "transfer resources" (through the option) a new line may appear as ... like "Enter your name". Can I do this? Please, I will be thankful if anyone solves and gives the code back :).
Here is my code:

Choose what to do:
<select>

<optgroup label="I want to:"><option>Generate Resources </option>
<option >Decrease Resources</option>
<option >Transfer Resources </option></select>


<img src= "spam.png">Change
<input value= "Write the text from image above"
type= "text" size= "30" checked>

<button > Go</button>