This is the simple demonstration in JavaScript how to create watermark text for textbox control. This requirement is the mostly used in web application.
Here the given codes to create the watermark text for textbox control.
For Example:
<head runat="server">
<title>Sample for Watermark Text Using JavaScript</title>
<script language="javascript" type="text/javascript">
function FuncWaterMark(txtEmail, event) {
var strVal = "Enter EmailID Here";
//Here to check textbox length and event type
if (txtEmail.value.length == 0 & event.type == "blur") {
txtEmail.style.color = "Gray";//setting text color
txtEmail.value = strVal; //setting default text in textbox
}
// Here to check textbox value and event type
if (txtEmail.value == strVal & event.type == "focus") {
txtEmail.style.color = "black";
txtEmail.value = "";
}
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<b>Email ID:</b>
<asp:TextBox ID="txtEmailID" runat="server" Text="Enter EmailID Here" ForeColor="Gray"
onblur="FuncWaterMark(this, event);" onfocus="FuncWaterMark(this, event);" />
</div>
</form>
</body>
</html>
Output:
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