Page 27 - LoudOffice_Guide-to-HTML_Part-II_Advanced.PDF

Prompts

Prompts are a way to get information from a user:

< h t m l >
< h e a d >
< t i t l e > W e l c o m e < / t i t l e >
< / h e a d >
< s c r i p t >
< ! - - / / H i d e
f u n c t i o n h e l l o ( ) {
v a r y N a m e = p r o m p t ( " P l e a s e e n t e r y o u r n a m e " ) ;
v a r n u m O n e = p r o m p t ( " E n t e r a N u m b e r " ) ;
v a r n u m T w o = p r o m p t ( " E n t e r a n o t h e r N u m b e r " ) ;
v a r p r o d u c t N u m s = n u m O n e * n u m T w o ;
v a r s u m N u m = p a r s e F l o a t ( n u m O n e ) +
P a r s e F l o a t ( n u m T w o ) ;
a l e r t ( " W e l c o m e " + y N a m e + " ! T h e p r o d u c t o f " +
n u m O n e + " a n d " + n u m T w o + " i s : " + p r o d u c t N u m s +
" , a n d t h e s u m o f t h o s e n u m b e r s i s : " + s u m N u m ) ;
}
/ / U n h i d e
- - >
< / s c r i p t >
< b o d y o n L o a d = ” h e l l o ( ) ” >
H e l l o
< / b o d y >
< / h t m l >
As you can see, we prompted the user for three variables: y N a m e , n u m O n e , and n u m T w o .
We then used an alert box to output the product of those numbers to the user.

C o n f i r m s

A confirm box displays a message of your choice to the user and gives them the option of
confirming true or false (actually the display is ‘OK’ or ‘Cancel’). Within your JavaScript

LoudOffice.com Guide to HTML – Part II Page 27