7
When inspecting a page, I realized it appears == $0 that is not part of HTML.
What does this code mean? It is part of Javascript?
2 answers
5
It is the element that is selected. It can be referenced in the Javascript console with the variable $0. For example (using jQuery), if you type this in the console:
$($0).html()
The HTML of the element you selected will appear (you can test it here in the Stack Overflow page). Of course this is not limited to calling html(), you can do whatever manipulations you want in the DOM using the $0.
5
$0 is a javascript variable that the developer tools (dev tools) create to make our life easier, when used in the terminal it references the element selected in the tab elements, therefore the == $0, because the selected element is equal to $0
Logo, in an HTML:
<p id="exemplo">Exemplo</p>
Call $0 (having this element selected in dev tools) is equivalent to:
document.getElementById('exemplo');
or
document.querySelector('#exemplo');
Among others
For curiosity purposes only, it is possible to reference comments with the $0, just select it, however, instead of returning an instance of HTMLElement, returns an instance of Comment
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Greetings, Lorena. I took the liberty of editing your question in order to clarify the question about
== $0. As for your other question, to keep the header fixed, I recommend you to open a new question, as it has no relation to this doubt.– Woss
Thank you so much. I’m sorry.
– Lorena Passagem