MouseEvent which attribute

Matukio ya DOM Mshahara wa MouseEvent

Definition and usage

The which attribute returns a number indicating which mouse button was pressed when the mouse event was triggered.

This attribute is mainly used with the onmousedown event.

Notes:The value returned by this attribute is equal to button attribute The return value is incremented by one.

Notes:This property is read-only.

Example

Find out which mouse button was pressed when the mouse event was triggered:

alert("You pressed button: " + event.which)

Try it yourself

Syntax

event.which

Technical details

Return value:

Numeric values representing the mouse button pressed when a mouse event occurs.

Possible values:

  • 0: No button
  • 1: Mouse left button
  • 2: Scroll wheel button or middle button (if available)
  • 3: Mouse right button

Notes:For mice configured for left-handed use, the return value is reversed.
DOM Version: DOM Level 2 Events

浏览器支持

表中的数字注明了完全支持该属性的首个浏览器版本。

Muarama Chrome IE Firefox Safari Opera
which 1.0 9.0 1.0 1.0 5.0

Vipindi vya vitengo vya

Mwongozo wa HTML DOM:Mwili wa button katika Mshahara wa MouseEvent

Mwongozo wa HTML DOM:Mwili wa buttons katika Mshahara wa MouseEvent

Matukio ya DOM Mshahara wa MouseEvent