Form Control JavaScript DHTML

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/*
JavaScript Unleashed, Third Edition
by Richard Wagner and R. Allen Wyke 
ISBN: 067231763X
Publisher Sams CopyRight 2000
*/


Credit Card Validation




   

Credit Card Validation



   size=16
   maxlength=16
   name="data">
   name="CheckButton"
   value="Validate"
   onClick="document.form1.result.value = '' +
    isCreditCard(document.form1.data)">


Result    size=16
   maxlength=16
   name="result">