String.CharAt Example: JavaScript Syntax – JS String.CharAt Example
String.CharAt Example: JavaScript Syntax – JS String.CharAt Example
Purpose: – Illustrates the JavaScript syntax for the String CharAt .
Prerequistes:
- Install Visual Web Developer 2008
Syntax: string.charAt(index) – Returns the character at the specified index – index is required. 0 is the first character and the last character in a string is string.length-1.
Restrictions: None
Notes:
- You can build your own library of syntax examples by using same web site over and over and just add new files to it.
Instructions:
- Use Visual Web Developer 2008
- Create new web site;
- Click File/New Web Site
- Select ASP.NET Website Template
- Select C-Sharp for Language
- name of Web Site could be JavaScript_Syntax.
- Add New folder named “DataType”
- Right-click project name in solution explorer;
- add new folder;
- name of folder should be: DataType
- Add New subfolder to “DataType” folder named “String”
- Right-click folder named “DataType” in solution explorer;
- add new folder;
- name of folder should be: String
- Add New subfolder to “String” folder named “Methods”
- Right-click subfolder named “String” in solution explorer;
- add new folder;
- name of folder should be: Methods
- Add HTML Page Named StringCharAt to Methods folder
- Right-click Methods subfolder;
- add new item;
- Select HTML Page
- HTML Page name should be StringCharAt
- Click on copy code in code below to copy code into HTML Page StringCharAt.htm
- Right-click on HTML page StringCharAt and select view in browser
< !DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>IdealProgrammer.com: String.CharAt Method</title>
<!--
***************************************************
* This example is from http://idealprogrammer.com *
***************************************************
-->
<script type="text/javascript" >
// charAt(index) Returns the character at the specified index - index is required
// 0 is the first character and the last character in a string is string.length-1
var strCharAt = "This is a string.";
document.write("strCharAt(0): " + strCharAt.charAt(0) + "<br />");
document.write("strCharAt.charAt(strCharAt.length - 1): " + strCharAt.charAt(strCharAt.length - 1));
</script>
</head>
<body>
</body>
</html> |
