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Answer 1

+6 A:

<script type="text/javascript" src="myfile.js"></script>

Usually inserted in the <head> tag. After that, it depends wether or not your script need additional initialization or customisation to work.

gizmo 2008-10-14 09:02:31

You are missing the (required) type attribute.

David Dorward 2008-10-14 10:48:52

type="text/javascript"very important.

matt lohkamp 2008-10-14 10:52:05

This required type is useless. First of all JS is the only scripting language accros all the browser (VBS is IE only and nearly dead). Then you sould rely on the MIME type sent by the server and not by the one written in the tag.

gizmo 2008-10-14 10:55:46

If nothing else, specifying the type stops validators from outputting an error. Having lots of errors that you don't care about makes it harder to find errors you DO care about.

David Dorward 2008-10-14 11:43:36

Insert before </body> improves performance, and also allows DOM queries when script loads.

eyelidlessness 2008-10-14 16:45:29

@eyelidlessness: You're right, except if the JS script has to do some DOM computation before that all the rest of the page is loaded. It was often the case with "old way" scripts.

gizmo 2008-10-14 17:11:16

Answer 2

+6 A:

See Using External ".js" Files to answer your specific question. Also suggest some tutorials, e.g.

Jay 2008-10-14 09:03:14

Avoid w3schools - they are full of errors.

David Dorward 2008-10-14 10:52:04

Answer 3

+16 A:

Just include this line anywhere in your HTML page:

<script type="text/javascript" src="yourfile.js"></script>

Don't forget the closing tag as IE won't recongize it without a separate closing tag.

DrJokepu 2008-10-14 09:03:51

In HTML the closing tag is required anyway.(In XHTML you can use empty element syntax if you use an XML content-type, but Appendix C "forbids" it for XHTML masquerading as HTML)

David Dorward 2008-10-14 10:52:54

What I meant that even in XHTML, IE won't understand <script type="text/javascript" src="yourfile.js" />

DrJokepu 2008-10-14 11:09:26

As I said - Appendix C "forbids" that (and the page won't work at all in IE if you use an XML content-type).

David Dorward 2008-10-14 11:44:34

Answer 4

+1 A:

Do a view source on this page.

S.Lott 2008-10-14 10:07:26

Answer 5

+1 A:

The specification

David Dorward 2008-10-14 10:51:09

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JavaScript how to use .js file

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