Delete default value of an input text on click

Question

I have an input text :

<input name="Email" type="text" id="Email" value="[e-mail]" />

I want to put a default value like "What's your programming question ? be specific." in StackOverFlow, and when the user click on it the default value disapear.

Answer 1

Why remove value? its useful, but why not try CSS

input[submit] {
   font-size: 0 !important;
}

Value is important to check & validate ur PHP