Can you explain the meaning of <!-- in javascript?

Have you ever noticed the <!-- and --> characters being used around JavaScript code like this:

<script type="text/javascript">
   <!--
   function validateForm()
   {
        if(document.pressed == 'Submit')
        {
             document.myform.action ="submit.html";
        }
        else
        if(document.pressed == 'Cancel')
        {
            document.myform.action ="cancel.html";
        }
   }
   -->
</script>

We all know that these characters indicate comments in HTML, but what about in JavaScript?

javascript

Answer №1

Not much to see here. This opening stanza is just an HTML comment.

Writing scripts like this has become outdated and unnecessary. The original purpose was to prevent issues in browsers that couldn't interpret the <script> tag. However, in today's world it's safe to assume that those kinds of browsers don't really exist anymore.

The same can be said for CDATA fragments (unless you're dealing with XHTML, but that's a whole other topic).

Answer №2

In HTML, comments are denoted by ``. These comments were commonly used in older style script tags to prevent ancient browsers from rendering the content within them.

It is not necessary to include these comments if you do not wish to.

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