TextDecoder.prototype.decode() - Web APIs 编辑

Experimental

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The TextDecoder.prototype.decode() method returns a DOMString containing the text, given in parameters, decoded with the specific method for that TextDecoder object.

Syntax

b1 = decoder.decode(buffer, options);
b2 = decoder.decode(buffer);
b3 = decoder.decode();

Parameters

buffer Optional

Is either an ArrayBuffer or an ArrayBufferView containing the text to decode.

options Optional

Is a TextDecodeOptions dictionary with the property:

stream

A Boolean flag indicating that additional data will follow in subsequent calls to decode(). Set to true if processing the data in chunks, and false for the final chunk or if the data is not chunked. It defaults to false.

Example

This example encodes and decodes the euro symbol, €.

HTML

<p>Encoded value: <span id="encoded-value"></span></p>
<p>Decoded value: <span id="decoded-value"></span></p>

JavaScript

const encoder = new TextEncoder();
const array = encoder.encode('€'); // Uint8Array(3) [226, 130, 172]
document.getElementById('encoded-value').textContent = array;

const decoder = new TextDecoder();
const str = decoder.decode(array); // String "€"
document.getElementById('decoded-value').textContent = str;

Result

Specifications

Browser compatibility

BCD tables only load in the browser

See also

• The TextDecoder interface it belongs to.