javascript - Why $('div#my') is returning Object Reference instead of HTML Tag? -


this question has answer here:

i don't know happen chrome browser, of sudden behavior of doing $('div#my') in console totally different before. 1 time i've experienced later somehow recovered, don't know how reproduce it, , today happened again.

please watch video:http://peaceevertvimg.org/jq.php.

in video $('div#my') in 2 different browsers:

the first browser not chrome believe imitates chrome behavior expect , have been experienced. because chrome not working expected have use demonstrate expection: when $('div#my)` see directly html tag, , can see tag's html content, "something" in case.

in contrast, in chrome browser, result different, when $('div#my') see object(n.fn.init), , can't see "something" immediately, of course inconvenient. before, pretty sure not this, behavior in first browser.

the simple webpage in video http://peaceevertvimg.org/jquery.php, can go test in chrome browser. , pretty sure of see first behavior. happened chrome?(i've disabled expansions , updated latest version)

by way, "html tag" , "object reference" right words describe these 2 different outcome?

*************update*************

if video not sufficient understand ask , want fix, these 2 pictures may help.

picture#1: "normal" behavior i've expected: enter image description here

picture#2: current behavior experiencing: enter image description here

you can see big differences, first 1 more intuitive, revealing key information immediately, while 2nd 1 not, @ least me. causes problem , how go first one?

$('div#my') doesn't return dom reference. returns jquery wrapper around found elements.

$('div#my')[0] return dom reference. or, forget jquery , use:

 document.getelementbyid("my");

...and dom reference directly

also, since there should/will ever 1 element given id, unnecessary use div#my, use #my.

assuming have <div id=somediv>, , write:

 console.log($("#somediv"));  console.log($("#somediv")[0]);

chrome shows this:

enter image description here

in first log, see result jquery object contains 1 element (the div). in second, see element directly.

now, depending on version of chrome have, may see first 1 reported [object object], doesn't change underlying result.


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