Does Javascript features change by browser?

Question

I wonder something about Javascript. Does Javascript features or behaviors change by browsers?

While I was working Javascript XMLHttpRequest upload method, I noticed that Internet Explorer sending small bytes but Firefox and Google chrome sending big bytes. So while I was sending big data with Firefox or Chrome, server is giving OutOfMemory exception.

I am editing post with image details. enter image description here

enter image description here

Yes they do. Actually most browsers support a close set of features but it is always IE which falls behinds and does not comply to standards. — Ibrahim Najjar, Oct 12 '13 at 09:47
Can you elaborate on 'small bytes' and 'big bytes'. Never realized they came in sizes... Do you have some sample code that demostrate the behavior you describe? — rene, Oct 12 '13 at 09:50
Are you asking for [javascript features](http://pointedears.de/scripts/test/es-matrix/) or [DOM features](http://stackoverflow.com/search?q=dom+incompatibilities) (of which `XMLHttpRequest` is part of)? Yes, both have very different browser support. — Bergi, Oct 12 '13 at 14:04
I edited the post with images. Same XHR upload process event results are here — barteloma, Oct 13 '13 at 07:13

score -1 · Answer 1 · answered Oct 12 '13 at 09:37

-1

No Javascript features doesn't change from browser to browser, it depends upon their Javascript rendering machine (interpreter is the difference).

For example:

Google - v8 engine
Safari - JavaScriptCore

answered Oct 12 '13 at 09:37

Praveen

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i guess thats what he does mean by feature changes . – Hussein Nazzal Oct 12 '13 at 09:42
1

JavaScript is being rendered? Never heard of that. – Bergi Oct 12 '13 at 14:02

score -1 · Answer 2 · edited May 23 '17 at 12:19

yes there is some differences (a hanful actually)

here are some examples

1- accessing the float proparity

because float is a reserved keyword you can access it in ie with:

document.getElementById("id").style.styleFloat = "left";

while in fire fox it will be :

document.getElementById("id").style.cssFloat = "left";

2-to access a class attribute you can do the following in ie :

document.getElementById("id").getAttribute("className");

while in fire fox :

document.getElementById("id").getAttribute("class");

these are the things that i had an experience with . but mostly every one is using jquery now so no need to worry about those . but here are some articles about them

http://www.impressivewebs.com/7-javascript-differences-between-firefox-ie/

http://www.willowdesign.info/blog/tag/javascript-browser-differences/

JS cross browser inconsistencies/differences

http://technologypost.blogspot.com/2008/07/ie-vs-firefox-javascript-differences_05.html