Where comes the $ Function from, when jQuery is not loaded?

Question

I recoginzed that i can use $('span') even when no js-framework is loaded.

It works in FF, Chrome and Edge. Where does this function come from? I had never read about it. Is it a HTML5 feature?

score 3 · Accepted Answer · answered Dec 07 '18 at 08:50

It's an alias for document.querySelector() provided by browser's developer tools. This shorthand is not available for page's JS code.

There are more useful dollar-tools, most notably $0 which contains a reference to DOM element selected in inspector.

Documentation:

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