Syntax
string.charCodeAt(num)
The charCodeAt() method returns the ISO-Latin-1 number of the character.
This indexing is done from left to right starting with the 0 (zero) position.
If the num passed is not a valid index in the string, -1 is returned.
<html>
<head>
<title>Using the String.charCodeAt() method</title>
</head>
<body>
<script language="JavaScript">
<!--
var myString = new String("This is a test");
var myIndex = prompt("Please enter a number", "");
var myCharCode = myString.charCodeAt(myIndex);
var myChar = myString.charAt(myIndex);
document.write('<b>The string you searched through was: </b>' + myString);
document.write('<br>The ' + myIndex + ' character in this string is ');
if (myChar == " "){
document.write('<space>');
}else{
document.write(myChar);
}
document.write(' and its ISO-Latin-1 code is ' + myCharCode);
-->
</script>
</body>
</html>
| 6.10.charCodeAt |
| 6.10.1. | String.charCodeAt() |