Get all attributes of an element using jQuery

The attributes property contains them all:

$(this).each(function() {  $.each(this.attributes, function() {    // this.attributes is not a plain object, but an array    // of attribute nodes, which contain both the name and value    if(this.specified) {      console.log(this.name, this.value);    }  });});

What you can also do is extending .attr so that you can call it like .attr() to get a plain object of all attributes:

(function(old) {  $.fn.attr = function() {    if(arguments.length === 0) {      if(this.length === 0) {        return null;      }      var obj = {};      $.each(this[0].attributes, function() {        if(this.specified) {          obj[this.name] = this.value;        }      });      return obj;    }    return old.apply(this, arguments);  };})($.fn.attr);

Usage:

var $div = $("<div data-a='1' id='b'>");$div.attr();  // { "data-a": "1", "id": "b" }

Here is an overview of the many ways that can be done, for my own reference as well as yours :) The functions return a hash of attribute names and their values.

Vanilla JS:

function getAttributes ( node ) {    var i,        attributeNodes = node.attributes,        length = attributeNodes.length,        attrs = {};    for ( i = 0; i < length; i++ ) attrs[attributeNodes[i].name] = attributeNodes[i].value;    return attrs;}

Vanilla JS with Array.reduce

Works for browsers supporting ES 5.1 (2011). Requires IE9+, does not work in IE8.

function getAttributes ( node ) {    var attributeNodeArray = Array.prototype.slice.call( node.attributes );    return attributeNodeArray.reduce( function ( attrs, attribute ) {        attrs[attribute.name] = attribute.value;        return attrs;    }, {} );}

jQuery

This function expects a jQuery object, not a DOM element.

function getAttributes ( $node ) {    var attrs = {};    $.each( $node[0].attributes, function ( index, attribute ) {        attrs[attribute.name] = attribute.value;    } );    return attrs;}

Underscore

Also works for lodash.

function getAttributes ( node ) {    return _.reduce( node.attributes, function ( attrs, attribute ) {        attrs[attribute.name] = attribute.value;        return attrs;    }, {} );}

lodash

Is even more concise than the Underscore version, but only works for lodash, not for Underscore. Requires IE9+, is buggy in IE8. Kudos to @AlJey for that one.

function getAttributes ( node ) {    return _.transform( node.attributes, function ( attrs, attribute ) {        attrs[attribute.name] = attribute.value;    }, {} );}

Test page

At JS Bin, there is a live test page covering all these functions. The test includes boolean attributes (hidden) and enumerated attributes (contenteditable="").

A debugging script (jquery solution based on the answer above by hashchange)

function getAttributes ( $node ) {      $.each( $node[0].attributes, function ( index, attribute ) {      console.log(attribute.name+':'+attribute.value);   } );}getAttributes($(this));  // find out what attributes are available