Popup Boxes
Alert Box
An alert box is often used if you want to make sure information comes
through to the user.When an alert box pops up, the user will have to click "OK" to proceed.
Syntax:
alert("sometext")
Confirm
Box
The Javascript confirm function is very similar to the Javascript alert
function. The difference between Confirm and Alert is that Confirm Box has two
choice OK or Cancel.When user will click either "OK" or "Cancel"
to proceed. If the user clicks "OK", the box returns true. If the
user clicks "Cancel", the box returns false.
Syntax:
confirm("sometext")
Prompt
Box
The JavaScript prompt box is used to gather information from the user.
Prompt Boxes allows the user to enter date. When a prompt box pops up, the user
will have to click either "OK" or "Cancel" to proceed after
entering an input value. If the user clicks "OK" the box returns the
input value. If the user clicks "Cancel" the box returns null.
Syntax:
prompt("sometext","defaultvalue")
