String.IndexOf Example: JavaScript Syntax – JS String.IndexOf Example

Posted by on Saturday, January 2, 2010 · Leave a Comment 

String.IndexOf Example: JavaScript Syntax – JS String.IndexOf Example

Purpose: – Illustrates the for the .

View Other String Properties and Methods

Prerequistes:

Syntax: string.indexOf(searchstring, start) – Returns the position of the first found occurrence of a specified value in a string – start is optional.

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:

  1. Use Visual Web Developer 2008
  2. 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.
  3. Add New folder named “DataType”
    • Right-click project name in solution explorer;
    • add new folder;
    • name of folder should be: DataType
  4. 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
  5. 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
  6. Add HTML Page Named StringIndexOf to Methods subfolder
    • Right-click Methods subfolder;
    • add new item;
    • Select HTML Page
    • HTML Page name should be StringIndexOf
  7. Click on copy code in code below to copy code into HTML Page StringIndexOf.htm
  8. Right-click on HTML page StringIndexOf and select view in browser
    9. < !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.IndexOf Method</title>
    <!-- 
    ***************************************************
    * This example is from http://idealprogrammer.com *
    ***************************************************
    -->
    <script type="text/javascript" >
        //    indexOf() 	Returns the position of the first found occurrence of a specified value in a string
        //                  SYNTAX: string.indexOf(searchstring, start) - start is optional
        var strIndexOf = "Einstein was a philosophical realist";
        document.write("strIndexOf.indexOf(ein): " + strIndexOf.indexOf("ein") + "<br />");
        document.write("strIndexOf.indexOf(philo): " + strIndexOf.indexOf("philo") + "<br />");
        document.write("strIndexOf.indexOf(real): " + strIndexOf.indexOf("real") + "<br />");
 
 
</script>
</head>
<body>
 
</body>
</html>

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