Member Avatar for Ruizz

How to display error message when string entered together with the characters outside the A-Z a-z 0-9?

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  • 18 Hours Discussion Span
  • Latest Post Latest Post by essential
Member Avatar for essential

Try these:

<input type="text" id="txt1" name="txt1" size="20" value="" onchange="if (!/[A-Za-z\d]/.test(this.value)) alert('Invalid data!');" />
Member Avatar for Ruizz

Sorry, if I input text like this "Test's or Test.s" it don't show error message :(.

I try use indexOf() it work but to many code added... :(

Anyidea ???

Member Avatar for essential

Here you go...

<input type="text" id="txt1" name="txt1" size="20" value="" onchange="if (!/[A-Za-z]+([0-9])/.test(this.value)) alert('Invalid data!');" />
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