javascript - How to convert UTF8 string to byte array?

Javascript - How to convert UTF8 string to byte array?

In JavaScript, you can convert a UTF-8 string to a byte array using the TextEncoder API. Here's an example:

// Create a TextEncoder instance const textEncoder = new TextEncoder(); // Your UTF-8 string const utf8String = 'Hello, World!'; // Convert the UTF-8 string to a byte array const byteArray = textEncoder.encode(utf8String); console.log(byteArray);

In this example:

  • We create a TextEncoder instance using new TextEncoder().
  • We define a UTF-8 string (utf8String) that we want to convert to a byte array.
  • We use the textEncoder.encode() method to convert the UTF-8 string to a Uint8Array (byte array).

The byteArray will contain the UTF-8 encoded representation of the string.

Keep in mind that the TextEncoder API is supported in modern browsers. If you are working in a Node.js environment or an environment without support for TextEncoder, you can use third-party libraries like text-encoding to achieve the same result. Here's an example using text-encoding:

const { TextEncoder } = require('util'); // Create a TextEncoder instance const textEncoder = new TextEncoder(); // Your UTF-8 string const utf8String = 'Hello, World!'; // Convert the UTF-8 string to a byte array const byteArray = textEncoder.encode(utf8String); console.log(byteArray);

Make sure to install the text-encoding package using:

npm install text-encoding

Examples

  1. "javascript UTF-8 string to byte array conversion"

    • Code Implementation:
      const stringToUtf8ByteArray = (str) => { const encoder = new TextEncoder('utf-8'); return encoder.encode(str); };

  2. "javascript convert string to Uint8Array"

    • Code Implementation:
      const stringToUint8Array = (str) => { return new TextEncoder().encode(str); };

  3. "javascript encode UTF-8 string to ArrayBuffer"

    • Code Implementation:
      const utf8StringToArrayBuffer = (str) => { return new TextEncoder().encode(str).buffer; };

  4. "javascript convert UTF-8 string to binary"

    • Code Implementation:
      const utf8StringToBinaryArray = (str) => { return Array.from(new TextEncoder().encode(str)); };

  5. "javascript Blob from UTF-8 string"

    • Code Implementation:
      const utf8StringToBlob = (str) => { return new Blob([new TextEncoder().encode(str)], { type: 'text/plain;charset=utf-8' }); };

  6. "javascript decode UTF-8 string to byte array"

    • Code Implementation:
      const utf8StringToByteArray = (str) => { const bytes = []; for (let i = 0; i < str.length; i++) { const charCode = str.charCodeAt(i); bytes.push(charCode & 0xFF); } return bytes; };

  7. "javascript Buffer from UTF-8 string"

    • Code Implementation:
      const utf8StringToBuffer = (str) => { return Buffer.from(str, 'utf-8'); };

  8. "javascript convert string to binary data"

    • Code Implementation:
      const stringToBinaryData = (str) => { return str.split('').map(char => char.charCodeAt(0)); };

  9. "javascript convert UTF-8 string to DataView"

    • Code Implementation:
      const utf8StringToDataView = (str) => { const encoder = new TextEncoder(); const uint8Array = encoder.encode(str); return new DataView(uint8Array.buffer); };

  10. "javascript convert string to ArrayBuffer"

    • Code Implementation:
      const stringToArrayBuffer = (str) => { const buffer = new ArrayBuffer(str.length); const view = new Uint8Array(buffer); for (let i = 0; i < str.length; i++) { view[i] = str.charCodeAt(i); } return buffer; };

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