- Prototype Tutorial
- Prototype - Home
- Prototype - Short Overview
- Prototype - Useful Features
- Prototype - Utility Methods
- Prototype - Element Object
- Prototype - Number Processing
- Prototype - Strings Processing
- Prototype - Array Processing
- Prototype - Hash processing
- Prototype - Basic Object
- Prototype - Templating
- Prototype - Enumerating
- Prototype - Event Handling
- Prototype - Form Management
- Prototype - JSON Support
- Prototype - AJAX Support
- Prototype - Expressing Ranges
- Prototype - Periodical Execution
- Prototype Useful Resources
- Prototype - Quick Guide
- Prototype - Useful Resources
- Prototype - Discussion
Prototype - reduce() Method
This method reduces arrays: one-element arrays are turned into their unique element, while multiple-element arrays are returned untouched.
Syntax
array.reduce();
Return Value
- If it is one-element array, then it turned into their unique element.
- If it is multi-elements array, then it remains untouched.
Example
<html> <head> <title>Prototype examples</title> <script type = "text/javascript" src = "/javascript/prototype.js"></script> <script> function showResult() { var arr = [10]; alert("Reduced Element : " + arr.reduce()); var arr = [10, 20, 30, 40]; alert("Reduced Element : " + arr.reduce().inspect()); } </script> </head> <body> <p>Click the button to see the result.</p> <br /> <br /> <input type = "button" value = "Result" onclick = "showResult();"/> </body> </html>
Output
prototype_array_processing.htm
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