TextDecoder Web API | TextDecoder constructor

Last Updated : 04 Oct, 2019

In HTML there is a TextDecoder Interface of which we can create a TextDecoder object for the encoding specified in parameter. Syntax:

decoder = new TextDecoder( utf-Label, option );

Parameters: This constructor accepts two parameters which are mentioned above and described below:

utf-Label: Label of the encoder in string format. It is "utf-8" as default.
option: TextDecoderOptions dictionary which has a property fatal (It is a Boolean flag which indicates if the TextDecoder.decode() method should throw DOMException. It's default value is false.)

Example 1: This example creating a TextDecoder object with "iso-8859-2" as parameter.

html

<!DOCTYPE html>
<html>

<head>
    <title> 
        TextDecoder Web API | TextDecoder constructor
    </title> 
</head>

<body>
    <center>
        <h1 style="color:green;"> 
            GeeksforGeeks 
        </h1>

        <h2>TextDecoder constructor</h2>
        
        <button onclick="gettextDecoder ();">
            Get textDecoder object
        </button>
        
        <p id='textDecoder'></p>
    
        <script type="text/javascript">
            function gettextDecoder() {
                var textDecoder1 = new TextDecoder("iso-8859-2");
    
                console.log(textDecoder1);
            }
        </script>
    </center>
</body>

</html>

Output:

Before Click the button:
After Click the button:

Example: Create a comment object with nothing as parameter. So the default parameter which is "utf-8" will be taken.

html

<!DOCTYPE html>
<html>

<head>
    <title> 
        TextDecoder Web API | TextDecoder constructor
    </title> 
</head>

<body>
    <center>
        <h1 style="color:green;"> 
            GeeksforGeeks 
        </h1>

        <h2>TextDecoder constructor</h2>
        
        <button onclick="gettextDecoder ();">
            Get textDecoder object
        </button>
        
        <p id='textDecoder'></p>
    
        <script type="text/javascript">
            function gettextDecoder() {
                var textDecoder1 = new TextDecoder();

                console.log(textDecoder1);
            }
        </script>
    </center>
</body>

</html>