String slice()

slice(startingPosition [, whereToStop(exclusive)])

returns a substring and accepts either one or two arguments.

If the second argument is omitted, it is default to the ending position.

slice() does not alter the value of the string itself.

 
<!DOCTYPE html>
<html>
<head>
    <title>Example</title>
    <script type="text/javascript">
        var stringValue = "hello world"; 
        
        document.writeln(stringValue.slice(3)); //"lo world" 
       
    </script>
</head>
<body>
</body>
</html>

Click to view the demo

A negative argument tells to do the sub string from the end.

 
<!DOCTYPE html>
<html>
<head>
    <title>Example</title>
    <script type="text/javascript">
    
        var stringValue = "hello world"; 
        
        document.writeln(stringValue.slice(-3)); //"rld" 
        document.writeln(stringValue.slice(3, -4)); //"lo w" 

       
    </script>
</head>
<body>
</body>
</html>

Click to view the demo