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I just curious why my JavaScript can't run (tested in Firefox and IE) if I write the <script> tag like this:
<script type="text/javascript" src="script.js"/>
It will work if I change that line to:
<script type="text/javascript" src="script.js"></script>
So my question is: why I can't close the script tag in the start tag since I don't have any content inside it.
My JavaScript code is simple, just:
alert("test");
Notes: I check firefox error console and no error.
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HTML tags are either self closing or not. It has nothing to do with the / at the end. That's an XML thing, not an HTML thing. So for example <script> is never self closing because it might contain a code block, and tags like <br> <img> and <meta> are always self closing.
Dynamic script such as text/javascript . None, both the starting and ending tag are mandatory.
In HTML, JavaScript code is inserted between <script> and </script> tags. You can place any number of scripts in an HTML document. Scripts can be placed in the <body> , or in the <head> section of an HTML page, or in both.
An HTML page can contain multiple <script> tags in the <head> or <body> tag. The browser executes all the script tags, starting from the first script tag from the beginning.
The concept of self-closing tags is an XML concept. You can't use them in HTML. (You can use them in XHTML, but only if the document is served with an XML content-type, not if it is served as text/html).
In HTML some elements (such as <img>) cannot have any content, so they don't have end tags).
Since a script can have a src attribute or the script be can inside the element, <script> is not one of them.
(HTML 5 allows a / character to appear at the end of a start tag for an element that is defined as EMPTY, but it is just sugar for people addicted to XML and has no meaning in the language).
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