How To make jQuery Check Empty Value or Null Value OR Check if String Contains Null or Empty Value in C# Asp.Net

Wednesday 3 July 2013

How To make jQuery Check Empty Value or Null Value OR Check if String Contains Null or Empty Value in C# Asp.Net

How To make jQuery Check Empty Value or Null Value OR Check if String Contains Null or Empty Value in C# Asp.Net

Program:

.Aspx File

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Check if string empty or null</title>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.8.2.js"></script>
<script type="text/javascript">
$(function () {
$('#btnCheck').click(function () {
var txt = $('#txtName');
if (txt.val() != null && txt.val() != '') {
alert('you entered text ' + txt.val())
}
else {
alert('Please enter text')
}
})
});
</script>
</head>
<body>
<div>
Enter Text: <input type="text" id="txtName" />
<input type="button" id="btnCheck" value="Check" />
</div>
</body>
</html>

Live Demo:

Check if string empty or null

Enter Text:

Asp.Net

Pages

Wednesday 3 July 2013

How To make jQuery Check Empty Value or Null Value OR Check if String Contains Null or Empty Value in C# Asp.Net

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