When to use onclick in HTML?

问题:

HI,

For a tag, you can execute javascript through href or onclick.

When should I use onclick instead of href?

for me, only advantage I get with onclick is that you can hide javascript function name and parameters from your visitors.

回答1:

Ideally you won't use either. Ideally your link is a normal hyperlink with an href value referencing a fragment (#foo) or URL. Ideally the link would just work as-is without Javascript, too.

You'd then use unobtrusive Javascript that attaches itself to links or other DOM elements as needed and only if Javascript is available:

<a href="/some/action" id="foobar">Do some action!</a>

<script type="text/javascript">
    document.getElementById('foobar').addEventListener('click', function () {
        // do something
    }, false);
</script>

回答2:

Don't use either.

Write unobtrusive JavaScript instead.

回答3:

You need onclick when more things should be done than jumping to another page.