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Decrement
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<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title></title> </head> <body> <h1>Decrement by one</h1> <script type="text/javascript"> function Decrement() { var a = parseInt(document.getElementById("txtA").value); a--; alert(a); } </script> Enter two digit: <input type="text" id="txtA" name="txtA" /> <input type="button" name="btnDecrement" value="Submit" onclick="Decrement()" /> </body> </html>
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