fromCharCode and charCodeAt Methods _ basic knowledge

Returns a string from some Unicode character values.

String.fromCharCode ([code1[, code2[, ...) [, Coden]]]

Parameters
String

Required option. is a String object.

Code1, ..., coden

Options available. is the sequence of Unicode character values to convert to a string. If no arguments are given, the result is an empty string.

Description
You do not have to create a String object before calling fromCharCode.

In the following example, test contains the string "plain":

var test = String.fromCharCode (112, 108, 97, 105, 110);
charCodeAt method
Returns an Integer that represents the Unicode encoding of the character at the specified position.

strobj.charcodeat (Index)

Parameters
Strobj

Required option. Any String object or text.

Index

Required option. The number of the zero-based count of the character to be processed. A number with a valid value of 0 to a string length minus 1.

Description
The first character in a string is numbered 0, the second character is numbered 1, and so on.

If there are no characters at the specified location, NaN is returned.

Example
The following example illustrates the use of the charCodeAt method.

function Charcodeattest (n) {
var str = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; Initializes the variable.
var n; Declare a variable.
n = str.charcodeat (n-1); Gets the Unicode value of the character on position N.
return (n); Returns the value.
}