how to restrict user not to enter any string type (by showing warning message)value in textbox which accepts only numeric value
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validation problem
how to restrict user not to enter any string type (by showing warning message)value in textbox which accepts only numeric value
Senior Coders
Here are 2 simple functions to validate the entry of a whole number or a numeric value that includes decimals.
HTML Code:<html> <head> <script> function wholenum(fieldwval){ wholeval=fieldwval.value; if (wholeval != parseInt(wholeval)){ alert(wholeval + ' is not a whole number'); testform.whole.name.select(); testform.whole.name.focus(); } } function numfield(fieldval){ numval=fieldval.value; if (numval != parseFloat(numval)){ alert(numval + ' is not a number'); testform.number.name.select(); testform.number.name.focus(); } } </script> </head> <body> <form name="testform"> <input type="text" name="whole" onBlur="wholenum(this)">Enter a whole number <br> <input type="text" name="number" onBlur="numfield(this)">Enter any number (incl. decimals) </html>
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