Anilananda Chakrabortty

Restrict input with regex

Jan 2 2020 11:27 PM

HI,

I have a input requirement of string pattern from front end.

the string can be aa-bbb-cccc the first word would be minimum 2 then second word would be between (3 to 5 character) and the last word can be (4 to 7 character)

each word is separated by a hyphen.

so that i have written one regular expression but it is not working can any one help me.

i am not able to find the problem.

var CustomeExp=/^([a-zA-z]{2})-([a-zA-Z]{3,5})-([a-zA-Z]{4,7})$/;
here is my code which...
<!DOCTYPE html>
<html>
<head>
<script data-require="jquery@*" data-semver="3.2.1" src="https://cdn.jsdelivr.net/npm/[email protected]/dist/jquery.min.js"></script>
</head>
<body>
Enter your text :
<br>
<input type="text" onkeypress="return validateKeypress(CustomeExp);">
</body>
</html>

var CustomeExp=/^([a-zA-z]{2})-([a-zA-Z]{3,5})-([a-zA-Z]{4,7})$/;
function validateKeypress(validChars) {
//alert(validChars);
var keyChar = String.fromCharCode(event.which || event.keyCode);
//alert(keyChar);
return validChars.test(keyChar) ? keyChar : false;
}

Thanks

Answers (2)

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