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Other References

CSSStyleDeclaration JS Conversion

MouseEvent clientY Property


Output the coordinates of the mouse pointer when the mouse button is clicked on an element:

var x = event.clientX;     // Get the horizontal coordinate
var y = event.clientY;     // Get the vertical coordinate
var coor = "X coords: " + x + ", Y coords: " + y;

The result of coor could be:

X coords: 142, Y coords: 99
Try it Yourself »

More "Try it Yourself" examples below.

Definition and Usage

The clientY property returns the vertical coordinate (according to the client area) of the mouse pointer when a mouse event was triggered.

The client area is the current window.

Tip: To get the horizontal coordinate (according to the client area) of the mouse pointer, use the clientX property.

Note: This property is read-only.

Browser Support

clientY Yes Yes Yes Yes Yes



Technical Details

Return Value: A Number, representing the vertical coordinate of the mouse pointer, in pixels
DOM Version: DOM Level 2 Events

More Examples


Output the coordinates of the mouse pointer while the mouse pointer moves over an element:

var x = event.clientX;
var y = event.clientY; 
var coor = "X coords: " + x + ", Y coords: " + y;
document.getElementById("demo").innerHTML = coor;
Try it Yourself »


A demonstration of the differences between clientX and clientY and screenX and screenY:

var cX = event.clientX;
var sX = event.screenX;
var cY = event.clientY;
var sY = event.screenY;
var coords1 = "client - X: " + cX + ", Y coords: " + cY;
var coords2 = "screen - X: " + sX + ", Y coords: " + sY;
Try it Yourself »

Related Pages

HTML DOM reference: MouseEvent clientX Property

HTML DOM reference: MouseEvent screenX Property

HTML DOM reference: MouseEvent screenY Property

HTML DOM reference: MouseEvent offsetX Property

HTML DOM reference: MouseEvent offsetY Property