
 代码如下: 
$("dd").bind("click",function(e){ 
var $obj = $(e.target); 
var i=0; 
for (var x in $obj){ 
i++; 
var $hr=(i%5==0) ? "
" : " "; 
document.write(x+" "+$hr); 
} 
}); 
遍历结果: 
0 length prevObject context selector 
-------------------------------------------------------------------------------- 
constructor init jquery size toArray 
-------------------------------------------------------------------------------- 
get pushStack each ready eq 
-------------------------------------------------------------------------------- 
first last slice map end 
-------------------------------------------------------------------------------- 
push sort splice extend data 
-------------------------------------------------------------------------------- 
removeData queue dequeue delay clearQueue 
-------------------------------------------------------------------------------- 
promise attr removeAttr prop removeProp 
-------------------------------------------------------------------------------- 
addClass removeClass toggleClass hasClass val 
-------------------------------------------------------------------------------- 
bind one unbind delegate undelegate 
-------------------------------------------------------------------------------- 
trigger triggerHandler toggle hover live 
-------------------------------------------------------------------------------- 
die blur focus focusin focusout 
-------------------------------------------------------------------------------- 
load resize scroll unload click 
-------------------------------------------------------------------------------- 
dblclick mousedown mouseup mousemove mouseover 
-------------------------------------------------------------------------------- 
mouseout mouseenter mouseleave change select 
-------------------------------------------------------------------------------- 
submit keydown keypress keyup error 
-------------------------------------------------------------------------------- 
find has not filter is 
-------------------------------------------------------------------------------- 
closest index add andSelf parent 
-------------------------------------------------------------------------------- 
parents parentsUntil next prev nextAll 
-------------------------------------------------------------------------------- 
prevAll nextUntil prevUntil siblings children 
-------------------------------------------------------------------------------- 
contents text wrapAll wrapInner wrap 
-------------------------------------------------------------------------------- 
unwrap append prepend before after 
-------------------------------------------------------------------------------- 
remove empty clone html replaceWith 
-------------------------------------------------------------------------------- 
detach domManip appendTo prependTo insertBefore 
-------------------------------------------------------------------------------- 
insertAfter replaceAll css serialize serializeArray 
-------------------------------------------------------------------------------- 
ajaxStart ajaxStop ajaxComplete ajaxError ajaxSuccess 
-------------------------------------------------------------------------------- 
ajaxSend show hide _toggle fadeTo 
-------------------------------------------------------------------------------- 
animate stop slideDown slideUp slideToggle 
-------------------------------------------------------------------------------- 
fadeIn fadeOut fadeToggle offset position 
-------------------------------------------------------------------------------- 
offsetParent scrollLeft scrollTop innerHeight outerHeight 
-------------------------------------------------------------------------------- 
height innerWidth outerWidth width 
再遍历: 
 代码如下: 
$("dd").bind("click",function(e){ 
var $obj = $(e.target); 
var i=0; 
for (var x in $obj[0]){ 
i++; 
var $hr=(i%5==0) ? "
" : " "; 
document.write(x+" "+$hr); 
} 
});  
遍历结果: 
querySelector querySelectorAll scrollTop scrollLeft scrollHeight 
-------------------------------------------------------------------------------- 
scrollWidth clientTop clientLeft clientHeight clientWidth 
-------------------------------------------------------------------------------- 
firstElementChild lastElementChild previousElementSibling nextElementSibling childElementCount 
-------------------------------------------------------------------------------- 
children classList setCapture getElementsByClassName getClientRects 
-------------------------------------------------------------------------------- 
getBoundingClientRect releaseCapture mozMatchesSelector addEventListener removeEventListener 
-------------------------------------------------------------------------------- 
dispatchEvent style contentEditable isContentEditable offsetParent 
-------------------------------------------------------------------------------- 
innerHTML offsetLeft offsetTop offsetHeight offsetWidth 
-------------------------------------------------------------------------------- 
scrollIntoView id title lang dir 
-------------------------------------------------------------------------------- 
className accessKey blur focus click 
-------------------------------------------------------------------------------- 
tagName removeAttributeNS removeAttribute getAttribute getElementsByTagName 
-------------------------------------------------------------------------------- 
setAttribute getElementsByTagNameNS hasAttributeNS setAttributeNS hasAttribute 
-------------------------------------------------------------------------------- 
getAttributeNS nodeName nodeValue nodeType parentNode 
-------------------------------------------------------------------------------- 
childNodes firstChild lastChild previousSibling nextSibling 
-------------------------------------------------------------------------------- 
attributes ownerDocument namespaceURI prefix localName 
-------------------------------------------------------------------------------- 
baseURI textContent setUserData getUserData insertBefore 
-------------------------------------------------------------------------------- 
replaceChild removeChild appendChild hasChildNodes cloneNode 
-------------------------------------------------------------------------------- 
normalize isSupported hasAttributes compareDocumentPosition isSameNode 
-------------------------------------------------------------------------------- 
lookupPrefix isDefaultNamespace lookupNamespaceURI isEqualNode getAttributeNode 
-------------------------------------------------------------------------------- 
setAttributeNode removeAttributeNode getAttributeNodeNS setAttributeNodeNS ELEMENT_NODE 
-------------------------------------------------------------------------------- 
ATTRIBUTE_NODE TEXT_NODE CDATA_SECTION_NODE ENTITY_REFERENCE_NODE ENTITY_NODE 
-------------------------------------------------------------------------------- 
PROCESSING_INSTRUCTION_NODE COMMENT_NODE DOCUMENT_NODE DOCUMENT_TYPE_NODE DOCUMENT_FRAGMENT_NODE 
-------------------------------------------------------------------------------- 
NOTATION_NODE DOCUMENT_POSITION_DISCONNECTED DOCUMENT_POSITION_PRECEDING DOCUMENT_POSITION_FOLLOWING DOCUMENT_POSITION_CONTAINS 
-------------------------------------------------------------------------------- 
DOCUMENT_POSITION_CONTAINED_BY DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC hidden tabIndex draggable 
-------------------------------------------------------------------------------- 
spellcheck dataset 
于是用$("dd")[0].tagName 可以获得tagName. 
参考:http://www.mkyong.com/jquery/jquery-how-to-get-the-tag-name/ 
然后与$("a")遍历的结果对比 
 代码如下: 
$("a").bind("click",function(e){ 
var $obj = $(e.target); 
var i=0; 
for (var x in $obj){ 
i++; 
var $hr=(i%5==0) ? "
" : " "; 
document.write(x+" "+$hr); 
} 
});  
遍历结果: 
0 context length constructor init 
-------------------------------------------------------------------------------- 
selector jquery size toArray get 
-------------------------------------------------------------------------------- 
pushStack each ready eq first 
-------------------------------------------------------------------------------- 
last slice map end push 
-------------------------------------------------------------------------------- 
sort splice extend data removeData 
-------------------------------------------------------------------------------- 
queue dequeue delay clearQueue promise 
-------------------------------------------------------------------------------- 
attr removeAttr prop removeProp addClass 
-------------------------------------------------------------------------------- 
removeClass toggleClass hasClass val bind 
-------------------------------------------------------------------------------- 
one unbind delegate undelegate trigger 
-------------------------------------------------------------------------------- 
triggerHandler toggle hover live die 
-------------------------------------------------------------------------------- 
blur focus focusin focusout load 
-------------------------------------------------------------------------------- 
resize scroll unload click dblclick 
-------------------------------------------------------------------------------- 
mousedown mouseup mousemove mouseover mouseout 
-------------------------------------------------------------------------------- 
mouseenter mouseleave change select submit 
-------------------------------------------------------------------------------- 
keydown keypress keyup error find 
-------------------------------------------------------------------------------- 
has not filter is closest 
-------------------------------------------------------------------------------- 
index add andSelf parent parents 
-------------------------------------------------------------------------------- 
parentsUntil next prev nextAll prevAll 
-------------------------------------------------------------------------------- 
nextUntil prevUntil siblings children contents 
-------------------------------------------------------------------------------- 
text wrapAll wrapInner wrap unwrap 
-------------------------------------------------------------------------------- 
append prepend before after remove 
-------------------------------------------------------------------------------- 
empty clone html replaceWith detach 
-------------------------------------------------------------------------------- 
domManip appendTo prependTo insertBefore insertAfter 
-------------------------------------------------------------------------------- 
replaceAll css serialize serializeArray ajaxStart 
-------------------------------------------------------------------------------- 
ajaxStop ajaxComplete ajaxError ajaxSuccess ajaxSend 
-------------------------------------------------------------------------------- 
show hide _toggle fadeTo animate 
-------------------------------------------------------------------------------- 
stop slideDown slideUp slideToggle fadeIn 
-------------------------------------------------------------------------------- 
fadeOut fadeToggle offset position offsetParent 
-------------------------------------------------------------------------------- 
scrollLeft scrollTop innerHeight outerHeight height 
-------------------------------------------------------------------------------- 
innerWidth outerWidth width 
再遍历: 
 代码如下: 
$("a").bind("click",function(e){ 
var $obj = $(e.target); 
var i=0; 
for (var x in $obj[0]){ 
i++; 
var $hr=(i%5==0) ? "
" : " "; 
document.write(x+" "+$hr); 
} 
});  
遍历结果: 
jQuery107028609993839658 querySelector querySelectorAll scrollTop scrollLeft 
-------------------------------------------------------------------------------- 
scrollHeight scrollWidth clientTop clientLeft clientHeight 
-------------------------------------------------------------------------------- 
clientWidth firstElementChild lastElementChild previousElementSibling nextElementSibling 
-------------------------------------------------------------------------------- 
childElementCount children classList setCapture getElementsByClassName 
-------------------------------------------------------------------------------- 
getClientRects getBoundingClientRect releaseCapture mozMatchesSelector addEventListener 
-------------------------------------------------------------------------------- 
removeEventListener dispatchEvent style contentEditable isContentEditable 
-------------------------------------------------------------------------------- 
offsetParent innerHTML offsetLeft offsetTop offsetHeight 
-------------------------------------------------------------------------------- 
offsetWidth scrollIntoView href rel target 
-------------------------------------------------------------------------------- 
name text search hash id 
-------------------------------------------------------------------------------- 
title lang dir className accessKey 
-------------------------------------------------------------------------------- 
blur focus click tagName removeAttributeNS 
-------------------------------------------------------------------------------- 
removeAttribute getAttribute getElementsByTagName setAttribute getElementsByTagNameNS 
-------------------------------------------------------------------------------- 
hasAttributeNS setAttributeNS hasAttribute getAttributeNS nodeName 
-------------------------------------------------------------------------------- 
nodeValue nodeType parentNode childNodes firstChild 
-------------------------------------------------------------------------------- 
lastChild previousSibling nextSibling attributes ownerDocument 
-------------------------------------------------------------------------------- 
namespaceURI prefix localName baseURI textContent 
-------------------------------------------------------------------------------- 
setUserData getUserData insertBefore replaceChild removeChild 
-------------------------------------------------------------------------------- 
appendChild hasChildNodes cloneNode normalize isSupported 
-------------------------------------------------------------------------------- 
hasAttributes compareDocumentPosition isSameNode lookupPrefix isDefaultNamespace 
-------------------------------------------------------------------------------- 
lookupNamespaceURI isEqualNode tabIndex ELEMENT_NODE ATTRIBUTE_NODE 
-------------------------------------------------------------------------------- 
TEXT_NODE CDATA_SECTION_NODE ENTITY_REFERENCE_NODE ENTITY_NODE PROCESSING_INSTRUCTION_NODE 
-------------------------------------------------------------------------------- 
COMMENT_NODE DOCUMENT_NODE DOCUMENT_TYPE_NODE DOCUMENT_FRAGMENT_NODE NOTATION_NODE 
-------------------------------------------------------------------------------- 
DOCUMENT_POSITION_DISCONNECTED DOCUMENT_POSITION_PRECEDING DOCUMENT_POSITION_FOLLOWING DOCUMENT_POSITION_CONTAINS DOCUMENT_POSITION_CONTAINED_BY 
-------------------------------------------------------------------------------- 
DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC getAttributeNode setAttributeNode removeAttributeNode getAttributeNodeNS 
-------------------------------------------------------------------------------- 
setAttributeNodeNS ping hreflang type protocol 
-------------------------------------------------------------------------------- 
host hostname port pathname charset 
-------------------------------------------------------------------------------- 
coords rev shape hidden draggable 
-------------------------------------------------------------------------------- 
spellcheck dataset 
jQuery Get Tag Name 
 代码如下:   
jQuery Get Tag Name  script>   
$(document).ready(function(){ 
var $tag = $('p')[0].tagName; //'P' 
alert($tag); 
var $tag = $('.classTag1')[0].tagName; //'DIV' 
alert($tag); 
var $tag = $('#idTag1')[0].tagName; //'DIV' 
alert($tag); 
var $tag = $('p').get(0).tagName; //'P' 
alert($tag); 
var $tag = $('.classTag1').get(0).tagName; //'DIV' 
alert($tag); 
var $tag = $('#idTag1').get(0).tagName; //'DIV' 
alert($tag); 
}); 
 script> 
 jQuery Get Tag Name
  
This is paragrah 1 
  
This is class='classTag1' 
 
 
This is id='idTag1'