Element.attributes

The Element.attributes property returns a live collection of all attribute nodes registered to the specified node. It is a NamedNodeMap, not an Array, so it has no Array methods and the Attr nodes' indexes may differ among browsers. To be more specific, attributes is a key/value pair of strings that represents any information regarding that attribute.

Syntax

JavaScript
var attr = element.attributes;

Example

Basic examples

JavaScript
// Get the first <p> element in the document
var para = document.getElementsByTagName("p")[0];
var atts = para.attributes;

Enumerating elements attributes

Numerical indexing is useful for going through all of an element's attributes.
The following example runs through the attribute nodes for the element in the document with id "p1", and prints each attribute's value.

HTML
<!DOCTYPE html>

<html>

 <head>
  <title>Attributes example</title>
  <script type="text/javascript">
   function listAttributes() {
     var paragraph = document.getElementById("paragraph");
     var result = document.getElementById("result");

     // First, let's verify that the paragraph has some attributes    
     if (paragraph.hasAttributes()) {
       var attrs = paragraph.attributes;
       var output = "";
       for(var i = attrs.length - 1; i >= 0; i--) {
         output += attrs[i].name + "->" + attrs[i].value;
       }
       result.value = output;
     } else {
       result.value = "No attributes to show";
     }
   }
  </script>
 </head>

<body>
 <p id="paragraph" style="color: green;">Sample Paragraph</p>
 <form action="">
  <p>
    <input type="button" value="Show first attribute name and value"
      onclick="listAttributes();">
    <input id="result" type="text" value="">
  </p>
 </form>
</body>
</html>

Specifications

Specification Status Comment
DOM
The definition of 'Element.attributes' in that specification.		 Living Standard From Document Object Model (DOM) Level 3 Core Specification, moved from Node to Element
Document Object Model (DOM) Level 3 Core Specification
The definition of 'Element.attributes' in that specification.		 Recommendation No change from Document Object Model (DOM) Level 2 Core Specification
Document Object Model (DOM) Level 2 Core Specification
The definition of 'Element.attributes' in that specification.		 Recommendation No change from Document Object Model (DOM) Level 1 Specification
Document Object Model (DOM) Level 1 Specification
The definition of 'Element.attributes' in that specification.		 Recommendation Initial definition.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support (Yes) (Yes) [1] 6.0 [2] (Yes) (Yes)
Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support (Yes) (Yes) [1] (Yes) (Yes) (Yes)

[1] Before Firefox 22, this attribute was implemented in the Node interface (inherited by Element). It has been moved to this interface to conform to the specification and the usage of other browsers.

[2] Internet Explorer 5.5 returns a map containing the values rather than the attribute objects.

See also

  • NamedNodeMap, the interface of the returned object
  • Cross-browser compatibility considerations: on quirksmode

License

© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/api/element/attributes

API DOM Element Élément Property Reference Référence