What is fromCharCode?

What is fromCharCode?

fromCharCode() method returns a string created from the specified sequence of UTF-16 code units.

What does fromCharCode do in JavaScript?

In JavaScript, fromCharCode() is a string method that is used to create a string from a sequence of Unicode values. Because the fromCharCode() method is a static method of the String constructor, it must be invoked through the String constructor object rather than through the particular instance of the String class.

What is charCodeAt?

In JavaScript, charCodeAt() is a string method that is used to retrieve a Unicode value for a character at a specific position in a string. Because the charCodeAt() method is a method of the String object, it must be invoked through a particular instance of the String class.

How to convert Char code to string in JavaScript?

fromCharCode() method converts Unicode values to characters. The String. fromCharCode() is a static method of the String object. The syntax is always String.

What is UTF-16 format?

UTF-16 (16-bit Unicode Transformation Format) is a character encoding capable of encoding all 1,112,064 valid character code points of Unicode (in fact this number of code points is dictated by the design of UTF-16).

What is Unicode in JavaScript?

Unicode in Javascript source code In Javascript, the identifiers and string literals can be expressed in Unicode via a Unicode escape sequence. The general syntax is XXXX , where X denotes four hexadecimal digits. For example, the letter o is denoted as ” in Unicode.

What is UTF-16 Le encoding?

UTF-16LE: A character encoding that maps code points of Unicode character set to a sequence of 2 bytes (16 bits). UTF-16LE stands for Unicode Transformation Format – 16-bit Little Endian. Each block is converted to a 16-bit integer assuming the least significant byte first.

What is fromcharcode () in Java?

Because fromCharCode () is a static method of String, you always use it as String.fromCharCode (), rather than as a method of a String object you created. In UTF-16, the most common characters can be represented by a single 16-bit value (i.e. a code unit).

What is the range of string fromcharcode in Java?

The static String.fromCharCode () method returns a string created from the specified sequence of UTF-16 code units. A sequence of numbers that are UTF-16 code units. The range is between 0 and 65535 ( 0xFFFF ). Numbers greater than 0xFFFF are truncated.

How to encode/decode a string in JavaScript?

In order to encode/decode a string in JavaScript, We are using built-in functions provided by JavaScript. This method encodes a string in base-64 and uses the “A-Z”, “a-z”, “0-9”, “+”, “/” and “=” characters to encode the provided string.

Why charcodeat method does not work with UTF-8 encoded string?

The charCodeAt method provides only ascii/utf-16 encoding even with utf-8 encoded String object : Building the string with fromCharCode would not be right as it expects UTF-16 : Here is a simple example to encode and decode UTF8 bytes and ASCII bytes :