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When does a mouse event occur in JavaScript?
Mouse button is clicked/released over an element. Mouse pointer comes over/out from an element. Every mouse move over an element triggers that event. Triggers after mousedown and then mouseup over the same element if the left mouse button was used. Triggers after two clicks on the same element within a short timeframe.
When does a mouse pointer come over an element?
The mouseover event occurs when a mouse pointer comes over an element, and mouseout – when it leaves. These events are special, because they have property relatedTarget. This property complements target.
When does the mouse interact with the HTML document?
Events that occur when the mouse interacts with the HTML document belongs to the MouseEvent Object.
What happens when the mouse moves between elements?
Let’s dive into more details about events that happen when the mouse moves between elements. The mouseover event occurs when a mouse pointer comes over an element, and mouseout – when it leaves. These events are special, because they have property relatedTarget. This property complements target.
If one presses the left mouse button and, without releasing it, moves the mouse, that also makes the selection, often unwanted. There are multiple ways to prevent the selection, that you can read in the chapter Selection and Range. In this particular case the most reasonable way is to prevent the browser action on mousedown.
How do I detect a click outside an element?
Users not using a mouse will be able to escape your dialog (and your pop-up menu is arguably a type of dialog) by pressing Tab, and they then won’t be able to read the content behind the dialog without subsequently triggering a click event. So let’s rephrase the question.
Click-related events always have the button property, which allows to get the exact mouse button. We usually don’t use it for click and contextmenu events, because the former happens only on left-click, and the latter – only on right-click.