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Home >Web Front-end >JS Tutorial >You can directly use the $/$$ function for debugging in Firefox/Chrome/Safari_javascript skills

You can directly use the $/$$ function for debugging in Firefox/Chrome/Safari_javascript skills

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2016-05-16 17:56:141117browse

Then I tested it in various browsers and found that it is available in Firefox/Chrome/Safari, but not in IE9/Opera.

$ is equivalent to document.getElementById
$$ is equivalent to document.querySelectorAll
Type $ in the chrome console, $$ is clear at a glance

These two functions are built-in with browser debugging tools.

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