Section 312: onMouseMove

Front

What is the purpose of the onMouseMove event in programming?

Back

The onMouseMove event is used to execute a function or code whenever the mouse pointer moves within a specified area, allowing for interactive applications.

Front

What does mouseX represent in a canvas?

Back

mouseX represents the horizontal position of the mouse pointer on the canvas, measured in pixels from the left edge.

Front

What does mouseY represent in a canvas?

Back

mouseY represents the vertical position of the mouse pointer on the canvas, measured in pixels from the top edge.

Front

If mouseX = 370, what is the result of the expression 400 - mouseX?

Back

30

Front

What happens to mouseX when you move the mouse to the right on the canvas?

Back

mouseX gets bigger.

Front

What happens to mouseY when you move the mouse down on the canvas?

Back

mouseY gets bigger.

Front

In the context of mouse movement, what does the term 'event handler' refer to?

Back

An event handler is a function that is executed in response to a specific event, such as mouse movement.

Front

What is the significance of the coordinate system in a canvas?

Back

The coordinate system in a canvas defines how positions are measured, with (0,0) being the top-left corner, where x increases to the right and y increases downward.

Front

How can you use mouseX and mouseY to create interactive graphics?

Back

By using mouseX and mouseY values to position shapes or images on the canvas, you can create dynamic and interactive graphics that respond to user input.

Front

What is the effect of moving the mouse quickly across the canvas?

Back

Moving the mouse quickly can trigger multiple onMouseMove events, allowing for smooth and responsive interactions.