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The MouseEvent.clientX
read-only property provides the horizontal coordinate within the application's client area at which the event occurred (as opposed to the coordinates within the page). For example, clicking in the top-left corner of the client area will always result in a mouse event with a clientX
value of 0, regardless of whether the page is scrolled horizontally.
Syntax
var x = instanceOfMouseEvent.clientX
Return value
A number
Example
<!DOCTYPE html> <html> <head> <title>clientX\clientY example</title> <script> function showCoords(evt){ alert( "clientX value: " + evt.clientX + "\n" + "clientY value: " + evt.clientY + "\n" ); } </script> </head> <body onmousedown="showCoords(event)"> <p>To display the mouse coordinates click anywhere on the page.</p> </body> </html>
Specifications
Specification | Status | Comment |
---|---|---|
Document Object Model (DOM) Level 3 Events Specification The definition of 'MouseEvent.clientX' in that specification. |
Working Draft | No change from Document Object Model (DOM) Level 2 Events Specification. |
Document Object Model (DOM) Level 2 Events Specification The definition of 'MouseEvent.clientX' in that specification. |
Recommendation | Initial definition. |
Browser compatibility
Feature | Firefox (Gecko) | Chrome | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | (Yes) | (Yes) | 6 | (Yes) | (Yes) |
Feature | Firefox Mobile (Gecko) | Android | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|
Basic support | ? | ? | ? | ? | ? |