- 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 - readAttribute() Method
This method returns the value of element's attribute or null, if attribute has not been specified.
Syntax
element.readAttribute(attribute);
Return Value
Returns the value of element's attribute or null, if attribute has not been specified.
Example
<html> <head> <title>Prototype examples</title> <script type = "text/javascript" src = "/javascript/prototype.js"></script> <script> function showResult() { var str = $('tag').readAttribute('href'); alert("Value of href : " + str ); var str = $('tag').readAttribute('title'); alert("Value of title : " + str ); var str = $('tag').readAttribute('somethingelse'); alert("Value ofsomething else : " + str ); } </script> </head> <body> <p>Click the button to see the result.</p> <a id = "tag" href = "/tags/prototype" rel = "tag" title = "view related bookmarks.">Prototype</a> <br /> <br /> <input type = "button" value = "Show Result" onclick = "showResult();"/> </body> </html>
Output
prototype_element_object.htm
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