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irt.org FAQ Knowledge Base Q332
Sent by
Bill Wilkinson on August 09, 1999 at 19:52:39:
Worth:
Worth reading
Technical:
Not technical enough
Comments:
The answer to Q332 shows how to pop up an alert when the user enters a non-number to a text box, but it doesn't then do anything to force the user to reenter the data. Obviously, a global flag could be set and checked, but a simple way would be to simply return the numeric value if it is okay or a zero if it is not and then invoke it via
...onChange="this.value=check(this.value);"...
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