- 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 - previous() Method
This method returns the element's previous sibling or the index'th one, if index is specified that matches cssRule. If no cssRule is provided, all previous siblings are considered. If no previous sibling matches these criteria, undefined is returned.
Syntax
element.previous([cssRule][, index = 0] );
Return Value
Returns HTML element. If no previous sibling matches these criteria, undefined is returned.
Example
<html> <head> <title>Prototype examples</title> <script type = "text/javascript" src = "/javascript/prototype.js"></script> <script> function showResult() { var str = $('saying').previous(); alert( "$('saying').previous() " + str.innerHTML ); var str = $('saying').previous(0); alert( "$('saying').previous(0) " + str.innerHTML ); var str = $('saying').previous('h3'); alert( "$('$('saying').previous('h3') " + str.innerHTML ); var str = $('ida-red').previous( '.yummy'); alert( "$('ida-red').previous( .yummy ) " + str.innerHTML ); var str = $('ida-red').previous( 5 ); alert( "$('ida-red').previous() " + str ); } </script> </head> <body> <p>Click the button to see the result.</p> <ul id = "fruits"> <li id = "apples"> <h3 id = "title">Apples</h3> <ul id = "list-of-apples"> <li id = "golden-delicious">Golden Delicious</li> <li id = "mutsu">Mutsu</li> <li id = "mcintosh" class = "yummy">McIntosh</li> <li id = "ida-red" class = "yummy">Ida Red</li> </ul> <p id = "saying">An apple a day keeps the doctor away.</p> </li> </ul> <br /> <input type = "button" value = "Show Result" onclick = "showResult();"/> </body> </html>
Output
prototype_element_object.htm
Advertisements