String.trimEnd Function
Removes trailing white-space characters from a String object.
var trimmedStringVar = myString.trimEnd();
Return Value
A copy of the string with all white-space characters removed from the end of the string.
Remarks
Use the trimEnd function to remove trailing white-space characters from the String object. Examples of white-space characters are spaces and tabs.
Example
The following code example demonstrates how to use the trimEnd function to remove trailing white space from a String object.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="https://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager runat="server" ID="ScriptManager1">
</asp:ScriptManager>
<script type="text/javascript">
// Determines if a string has a specified suffix as
// the last non white-space characters regardless of case.
function verifyStringSuffix(myString, suffix)
{
// Remove any trailing white spaces.
myString = myString.trimEnd();
// Set to lower case.
myString = myString.toLowerCase();
// Determine if the string ends with the specified suffix.
var isTxt = myString.endsWith(suffix.toString());
if (isTxt === true)
{
alert("The string \"" + myString + "\" ends with \"" + suffix + "\"");
}
else
{
alert("The string \"" + myString + "\" does not end with \"" + suffix + "\"");
}
}
verifyStringSuffix("some_file.TXT ", ".txt");
</script>
</form>
</body>
</html>