## event.which Returns: Number

Description: For key or mouse events, this property indicates the specific key or button that was pressed.

- #### version added: 1.1.3event.which

The `event.which` property normalizes `event.keyCode` and `event.charCode`. It is recommended to watch `event.which` for keyboard key input. For more detail, read about event.charCode on the MDN.

`event.which` also normalizes button presses (`mousedown` and `mouseup`events), reporting `1` for left button, `2` for middle, and `3` for right. Use `event.which` instead of `event.button`.

## Examples:

Log which key was depressed.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 |
    <!doctype html><html lang="en"><head>  <meta charset="utf-8">  <title>event.which demo</title>  <script src="https://code.jquery.com/jquery-1.10.2.js"></script></head><body> <input id="whichkey" value="type something"><div id="log"></div> <script>$( "#whichkey" ).on( "keydown", function( event ) {  $( "#log" ).html( event.type + ": " +  event.which );});</script> </body></html>

#### Demo:

Log which mouse button was depressed.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 |
    <!doctype html><html lang="en"><head>  <meta charset="utf-8">  <title>event.which demo</title>  <script src="https://code.jquery.com/jquery-1.10.2.js"></script></head><body> <input id="whichkey" value="click here"><div id="log"></div> <script>$( "#whichkey" ).on( "mousedown", function( event ) {  $( "#log" ).html( event.type + ": " +  event.which );});</script> </body></html>

#### Demo: