Get mouse coordinates javascript how to#
Get mouse coordinates javascript code#

we have to worry about padding and borders If you wanna be super-correct this can be tricky, set to the mouse position relative to the state's canvas It works on all browsers will all manner of padding, margin, border, and add-ons (like the stumbleupon top bar) // Creates an object with x and y defined,

Get mouse coordinates javascript code#

The callback of this function is used to call the function created above to detect the position of the click.I'll share the most bulletproof mouse code that I have created thus far. This event is triggered whenever a mouse button is pressed down. The addEventListener() method is used on this element to listen the ‘mousedown’ event. To detect the click, the canvas element is first selected using the querySelector() method. This subtraction will compensate for the location of the canvas on the page as the event’s x and y position would be relative to the page and not the canvas. the top side of the rectangle can be found using the ‘top’ property. The y-position of the canvas element, i.e. The y-position of the event is found using the ‘clientY’ property. Similarly, the position of y-coordinate of the click is found by subtracting the event’s y position with the bounding rectangle’s y position.

the left side of the rectangle can be found using the ‘left’ property. The x position of the canvas element, i.e. The x position of the event is found using the ‘clientX’ property. The position of x-coordinate of the mouse click is found by subtracting the event’s x position with the bounding rectangle’s x position. This method returns the size of an element and its position relative to the viewport. The dimension of the canvas is found using the getBoundingClientRect() function. Difference between var and let in JavaScriptĪ function is created which takes in the canvas element and event as parameters.Hide or show elements in HTML using display property.

Get mouse coordinates javascript how to#

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