Delete default value of an input text on click

Question

I have an input text :

I want to put a default value like

Answer 1

we can do it without using js in the following way using the "placeholder" attribute of html5 ( the default text disappears when the user starts to type in ,but not on just clicking )

see this: http://www.w3schools.com/html/tryit.asp?filename=tryhtml5_input_placeholder