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 Using Javascript in Your HTML
Email
Since Javascript's are mainly a unique and proprietary
element, and by this we mean that you can write 100 different scripts
which all do basically the same thing but in a different manner,
complex JavaScripts will always have trouble in your HTML email.
Due to the wide variety of email clients, browsers,
security settings, updates, and service packs installed, it is difficult
to predict how a script will execute against any given email client.
Javascripts can cause browsers & Outlook 2000 to disable and
active scripting contained in an email document (there has been
an increase in email security due to malicious scripts).
For more information on Microsoft Outlook & Office
Security visit:
Outlook E-mail Security Update Information
http://support.microsoft.com/support/kb/articles/q262/7/01.asp
How Outlook Renders HTML
http://support.microsoft.com/support/kb/articles/q249/9/72.asp
You would be wise to test any Javascript you wish to
include in a mailing. Not all email clients can handle the scripts,
and most web-based systems disable scripts as a general rule to
prevent malicious code from being executed on a system.
Javascript Navigation forms such as jumpmenu forms can
easily be use, but even these will only work in non web-based email
clients. Most other navigation forms are not supported because they
do not work on the majority of web-based email clients.
Most Forms, which use the GET/POST method, will render and test
correctly in web-based email clients.. You can often use this to
get around many Javascript problems in HTML email.
Remember! Most web-based email browsers are a <FORM> themselves
and use Javascript to power their product in some way or another.
Your script has to be fairly inoccuous in order to not interfere
with their product.
We'll be providing some more examples as we expand of this collumn
in the near future.
In the meantime, here is a list
of HTML email FAQs & Resources
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