Member Avatar for Madhusudhan

Hi All,
I have specific requirement in web development.
I am Programmer Analyst in .Net, would like to know the difference between Firefox and IE6.0.
Some of the Javascript will not execute in Firefox !!
Does any one have better idea about this !!.

Thanks and with regards,

Madhusudhan.H.K.

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  • Latest Post Latest Post by vijayraghav

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Short summary and practical next steps (builds on points from , , and ):

Most likely cause: IE6 and Firefox implement different DOM/event APIs and allow different JavaScript behaviors. Code that relies on IE-only things (for example attachEvent/window.event/document.all, ActiveX-based XHR, or nonstandard DOM properties like innerText) will throw in Firefox and can stop subsequent scripts from running. ASP.NET often emits client script and IDs that assume IE behavior, so the generated JS can fail unchanged in Firefox.

Quick cross-browser pattern for events:

if (el.addEventListener) {
  el.addEventListener('click', handler, false);
} else if (el.attachEvent) {
  el.attachEvent('onclick', handler);
} else {
  el.onclick = handler;
}

Checklist to debug and harden the page:

  • Open the browser console in Firefox and fix the first error you see — one uncaught error often prevents other scripts from running.
  • Ensure a standards DOCTYPE so browsers use standards mode rather than quirks mode.
  • Replace browser sniffing with feature detection (check for addEventListener, XMLHttpRequest, textContent, etc.).
  • Use fallbacks for DOM differences (textContent || innerText) and a cross-browser XHR creation routine.
  • Validate HTML/CSS to catch stray tags or attributes that trigger different parsing.
  • For legacy IE-only visual bugs (PNG transparency, box-model), isolate them with conditional logic rather than changing core JS.

Notes for about JAWS: screen reader behavior depends on the browser+screen-reader combination; prefer semantic HTML, correct labels, ARIA landmarks/roles for dynamic content, and test the specific browser+JAWS combo because accessibility hooks differ by browser.

Final workflow: isolate the failing script to a minimal test case, fix the first error, add small polyfills or use a lightweight library to normalize behavior, and re-test across both browsers. This gives the concrete steps behind the “standards and graceful degradation” advice already suggested in the thread.

Recommended Answers

All 5 Replies

Member Avatar for Letscode

Madhu,
Its a pain when your client says "My website must be compatible with all the Browser",
"Well thats easy to say but Are you the one who is coding it."

The same HTML code which works well in IE6.0 wont work exactly the same Mozilla.

Check out this link http://www.howtocreate.co.uk/tutorials/index.php?tut=0&part=16 which talks about obtaining the window size in different browsers.

Being a .NET developer you'll be faced with a lot of incompatibility issues with Mozilla,Netscape,IE.

In Netscape,If you use Frameset and reference the next frameset with a query string ,its a pain since in Netscape the tags will be opened as a new window.But there is an option available in the browser properties to disable it.

Styles will also give you a headache.

Read this Blog,
http://west-wind.com/weblog/posts/188.aspx

I'm not sure what to advice you for browser incompatibility,The only thing I can say is what ever issues you face you can solve it.There is always a work around.


Hi All,
I have specific requirement in web development.
I am Programmer Analyst in .Net, would like to know the difference between Firefox and IE6.0.
Some of the Javascript will not execute in Firefox !!
Does any one have better idea about this !!.

Thanks and with regards,

Madhusudhan.H.K.

Member Avatar for bkendall

Unfort this is an issue that have troubled web developers for years and the solution has always been to write workarounds or hacks for the various browers that do not understand one tag or another. The better solution is to write for that standard and then jsut have your page degrade gracefully from there.

My statement to clients is that I will make their project comply with the standards and funtional in the browsers that do not support the standards. Otherwise you will be banging your head on the wall everyday writing hacks.

Member Avatar for Kschikan

I have to agree with bkendall . It's more important to write for standards than for a specific browser. Sometimes you may want to look at your design and see if you can change it so that there's less ambiguity, although I realize this isn't always an option.

That being said, we all know that people will use different browsers, and it's a good idea to be familiar with the activity each one will display before developing so you can write with the exceptions in mind.

Member Avatar for alpha_foobar

I recently discovered this page http://www-128.ibm.com/developerworks/web/library/wa-ie2mozgd/, through slashdot i think, it covers several of the differences between IE and Firefox. It also contains many of the links to the standards that these browsers pretend to comply with.

Unfortunately, it is often difficult to find the standard (accurately) that particular browsers comply with. And all browsers have quirks in how they interpret the standards in particular modes.

The best advice is to follow the standards if you have a choice. And implement work arounds only when it becomes obvious that a workaround is required. It is completely laughible to expect that Javascript generated by .NET will run in Firefox. And at no time in the history of web browsers has anybody expected their JavaScript to run unchanged on all browsers... so I find this thread rather amusing! You always need to test your code in the environments that you wish it to run.

Member Avatar for vijayraghav

Hi,

I am Vijay and a JAVA developer.

I have a requirement for the JAW(screenReader) which is working in mozilla and not in IE. I shd rectify the issue. Do u have any idea why the JAWS application is not working in IE.
Please reply me as soon as possible as it s a very important one..

Waiting for ur esteemed reply !!!

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