Code for Validating Textbox with only characters and spaces in limited number [Resolved]

Posted by Rasagna under JavaScript on 12/29/2015 | Points: 10 | Views : 1424 | Status : [Member] | Replies : 3

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Hii,
I have a asp Textbox control where i have to validate it to accept only characters and spaces and not more than 20 characters and maximum of 2 spaces.If not satisfied display error message.I need JavaScript code to validate this.
Thanks in Advance..

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Posted by: Rajeshatkiit on: 1/6/2016 [Member] Starter | Points: 50

1	Hi Please use this code for your need. It will help you. var alphanumeric = "someStringHereghh hjhj j "; var strLength = alphanumeric.split(" ").length - 1); if (alphanumeric.length < 20) { alert('String should be more than 20 chars'); } else if(strLength > 3) { alert('String should not contain more than 2 space'); } else { var myRegEx = /^[A-Za-z ]+$/; var isValid = myRegEx.test(alphanumeric); } Please mark it as answer if it helps you. Rasagna, if this helps please login to Mark As Answer. \| Alert Moderator

Hi

Please use this code for your need. It will help you.

var alphanumeric = "someStringHereghh hjhj j ";

var strLength = alphanumeric.split(" ").length - 1);

if (alphanumeric.length < 20)
{

alert('String should be more than 20 chars');

}

else if(strLength > 3)
{
alert('String should not contain more than 2 space');
}

else
{

var myRegEx = /^[A-Za-z ]+$/;
var isValid = myRegEx.test(alphanumeric);

}

Please mark it as answer if it helps you.

Rasagna, if this helps please login to Mark As Answer. | Alert Moderator

Posted by: Rajnilari2015 on: 1/7/2016 [Member] [Microsoft_MVP] [MVP] Platinum | Points: 50

0	Try this <html> <head> <script type="text/javascript"> function test(){ var originalString=document.getElementById('txtInput').value; var myRegEx = /^[a-zA-Z]{0,20}(?:\s[a-zA-Z]{0,20}){0,2}$/; var isValid = myRegEx.test(originalString); alert(isValid); } </script> </head> <body> <input type="button" id="btnValidate" value="Validate" onclick="test()"/> <input type="text" id="txtInput" maxlength="20"/> </body> </html> Hope that helps -- Thanks & Regards, RNA Team Rasagna, if this helps please login to Mark As Answer. \| Alert Moderator

Try this

<html>

	<head>

		<script type="text/javascript">



		function test(){



			var originalString=document.getElementById('txtInput').value;			

			var myRegEx = /^[a-zA-Z]{0,20}(?:\s[a-zA-Z]{0,20}){0,2}$/;			

			var isValid = myRegEx.test(originalString);

			alert(isValid);

		}

        

    	</script>

	</head>

	<body>       

        <input type="button" id="btnValidate" value="Validate" onclick="test()"/> 

        <input type="text" id="txtInput" maxlength="20"/> 

	</body>

</html>

Hope that helps

--
Thanks & Regards,
RNA Team

Rasagna, if this helps please login to Mark As Answer. | Alert Moderator

Posted by: Professionaluser on: 12/31/2015 [Member] [MVP] Bronze | Points: 25

-1	refer http://www.webdevelopmenthelp.net/2013/02/javascript-validating-input.html Rasagna, if this helps please login to Mark As Answer. \| Alert Moderator

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