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In the following code: 

<a onclick="javascript:alert()">

how do you name the javascript: part? Protocol, pseudo-protocol, scheme, label, prefix?

I am only trying to figure out a common name for it, not technically correct term based on what it actually is at the end. So when I say for example "javascript protocol" most people would be able understand what I mean. (I need to use this in a documentation)

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< a onclick="javascript:alert()">

I don't believe using javascript: in anything other than the href attribute is even valid (though it appears browsers will still execute it - I believe this is because technically javascript: in this context is a label, are you planning to goto javascript;?).

Also, it's considered very bad form to use inline event handlers like that. And if I'm not mistaken it's even been deprecated by W3C.

But, fwiw, when javascript: is used in an href it is called a "pseudo-protocol identifier".

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  • You could use it to break an outer loop. But even that purpose is essentially forgotten.
    – Reid
    Mar 25, 2011 at 22:41
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    @Reid: and completely irrelevant (for use) in an inline event handler.
    – quentin-starin
    Mar 26, 2011 at 0:24

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