Re: Element output in JavaScript consoles

Path	csiph.com!xmission!news.glorb.com!peer01.iad.highwinds-media.com!news.highwinds-media.com!feed-me.highwinds-media.com!Xl.tags.giganews.com!border1.nntp.dca1.giganews.com!nntp.giganews.com!local2.nntp.dca.giganews.com!nntp.westnet.com.au!news.westnet.com.au.POSTED!not-for-mail
NNTP-Posting-Date	Sat, 19 Dec 2015 00:05:14 -0600
Subject	Re: Element output in JavaScript consoles
Newsgroups	comp.lang.javascript
References	<consoles-20151214163101@ram.dialup.fu-berlin.de>
From	RobG <rgqld@iinet.net.au>
Date	Sat, 19 Dec 2015 16:05:10 +1000
User-Agent	Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:38.0) Gecko/20100101 Thunderbird/38.3.0
MIME-Version	1.0
In-Reply-To	<consoles-20151214163101@ram.dialup.fu-berlin.de>
Content-Type	text/plain; charset=windows-1252; format=flowed
Content-Transfer-Encoding	8bit
Message-ID	<JISdnRAdLJMHbunLnZ2dnUU7-RmdnZ2d@westnet.com.au> (permalink)
Lines	45
X-Usenet-Provider	http://www.giganews.com
NNTP-Posting-Host	58.6.210.146
X-Trace	sv3-evXLGsw0NliIW2EA4wUJ993sZT3Bfb17/ybqYnMkLu1xgB8+rUl+pr0jowtj3qf0c1dN4xHSrCSxfwN!aCQVwx6BmnKZcByRitkKBenBxi4xlYPVX78qEb5Ihfh99A17iYV1Z1q7XemJKk+Lv1zN5jd9bh32!vcFXlZzrQ/ATmnWbhf8=
X-Complaints-To	abuse@westnet.com.au
X-Abuse-and-DMCA-Info	Please be sure to forward a copy of ALL headers
X-Abuse-and-DMCA-Info	Otherwise we will be unable to process your complaint properly
X-Postfilter	1.3.40
X-Original-Bytes	2286
X-Received-Bytes	2398
X-Received-Body-CRC	1928532015
Xref	csiph.com comp.lang.javascript:29025

Show key headers only | View raw

On 15/12/2015 01:53, Stefan Ram wrote:
>    I was looking for some DOM applications as examples for my
>    JavaScript course and came up with this use of the Firefox
>    console (input/output pairs):
>
> document.firstElementChild
> <html>

[...]

>
>    I see that the Firefox console kinda »pretty prints« the
>    element. I.e., it does not just say
>
> [object]
>
>    but
>
> <html>
>
>    . I like this! But can I rely on it?

As in "do other browsers do it the same way", then no. Nor is it 
standardised. Even Firefox may change its behaviour any time the 
developers want (i.e. it is implementation dependent).

>    Is this output experimental or is it an established feature?

It is an established feature in reasonably modern browsers.

>    Can it be expected to remain this way in the future?

No, see above.

>    Do other browser consoles behave similar?

"Similar" in that they tend to print something more useful than 
"object", but not consistently the same format and certainly not content.

-- 
Rob

Back to comp.lang.javascript | Previous | Next | Find similar | Unroll thread

Thread

Re: Element output in JavaScript consoles RobG <rgqld@iinet.net.au> - 2015-12-19 16:05 +1000

csiph-web