Instructions for using fromCharCode and charCodeAt methods in javascript flash_Basic knowledge

fromCharCode method
Returns a string from some Unicode character value.
String.fromCharCode([code1[, code2[, ...[, codeN]]]])
Parameters
String
Required. Is a String object.
code1, . . . , codeN
Optional. is a sequence of Unicode character values ​​to be converted to a string. If no arguments are given, the result is an empty string.
Note
There is no need 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);
Requires
version 3
See
charCodeAt method | String object method
charCodeAt method
Returns an integer representing the Unicode encoding of the character at the specified position.
strObj.charCodeAt(index)
Parameters
strObj
Required. Any String object or literal.
index
Required. The zero-based number of the character to be processed. Valid values ​​are 0 to the length of the string minus 1.

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

If there is no character at the specified position, NaN will be returned.

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

function charCodeAtTest(n){
var str = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; //Initialize variables.
var n;
n = str.charCodeAt(n - 1); //Get the Unicode value of the character at position n.
return (n);
}


flash
String.fromCharCode

Availability
Flash Player 5.
Usage
String.fromCharCode(c1,c2,...cN)
Parameters
c1, c2...cN represent decimal integers of ASCII values.
Returns

None.

Description

method; returns a string consisting of characters represented by the ASCII value in the parameter.

Example


This example uses the fromCharCode method to insert an "@" character into an email address.

address = "admin" String.fromCharCode(64) "jb51.net";
trace(address);
// output: admin@jb51.net