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Merge KeyboardEvent/MouseEvent.which into UIEvent.which (#8751)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| --- | ||
| title: UIEvent.which | ||
| slug: Web/API/UIEvent/which | ||
| tags: | ||
| - API | ||
| - DOM | ||
| - UIEvent | ||
| - Property | ||
| - Read-only | ||
| - Reference | ||
| browser-compat: api.UIEvent.which | ||
| --- | ||
| <div>{{ APIRef("DOM Events") }} {{Non-standard_header}}</div> | ||
|
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| <p>The <code><strong>UIEvent.which</strong></code> read-only property of the {{domxref("UIEvent")}} | ||
| interface returns a number that indicates which button was pressed on the mouse, or the | ||
| numeric <code>keyCode</code> or the character code (<code>charCode</code>) of the key | ||
| pressed on the keyboard.</p> | ||
|
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| <h2 id="Syntax">Syntax</h2> | ||
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| <pre class="brush: js notranslate">var <em>result</em> = <em>event</em>.which; | ||
| </pre> | ||
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| <h3 id="Return_value">Return value</h3> | ||
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| <h4 id="Return_value_KeyboardEvent">Return value for {{domxref("KeyboardEvent")}}</h4> | ||
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| <ul> | ||
| <li><code>event.which</code> contains the numeric code for a particular key pressed, | ||
| depending on whether an alphanumeric or non-alphanumeric key was pressed. Please see | ||
| {{domxref("KeyboardEvent.charCode")}} and {{domxref("KeyboardEvent.keyCode")}} for | ||
| more details.</li> | ||
| </ul> | ||
|
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| <h4 id="Return_value_MouseEvent">Return value for {{domxref("MouseEvent")}} {{non-standard_inline}}</h4> | ||
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| <p>A number representing a given button:</p> | ||
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| <ul> | ||
| <li><code>0</code>: No button</li> | ||
| <li><code>1</code>: Left button</li> | ||
| <li><code>2</code>: Middle button (if present)</li> | ||
| <li><code>3</code>: Right button</li> | ||
| </ul> | ||
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| <p>For a mouse configured for left-handed use, the button actions are reversed. In this | ||
| case, the values are read from right to left.</p> | ||
|
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| <h2 id="Example">Example</h2> | ||
|
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| <pre class="brush: html"><html> | ||
| <head> | ||
| <title>charCode/keyCode/which example</title> | ||
|
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| <script type="text/javascript"> | ||
|
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| function showKeyPress(evt) { | ||
| alert("onkeypress handler: \n" | ||
| + "keyCode property: " + evt.keyCode + "\n" | ||
| + "which property: " + evt.which + "\n" | ||
| + "charCode property: " + evt.charCode + "\n" | ||
| + "Character Key Pressed: " | ||
| + String.fromCharCode(evt.charCode) + "\n" | ||
| ); | ||
| } | ||
|
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| function keyDown(evt) { | ||
| alert("onkeydown handler: \n" | ||
| + "keyCode property: " + evt.keyCode + "\n" | ||
| + "which property: " + evt.which + "\n" | ||
| ); | ||
| } | ||
|
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| </script> | ||
| </head> | ||
|
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| <body | ||
| onkeypress="showKeyPress(event);" | ||
| onkeydown="keyDown(event);" | ||
| > | ||
|
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| <p>Please press any key.</p> | ||
|
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| </body> | ||
| </html> | ||
| </pre> | ||
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| <h2 id="Specifications">Specifications</h2> | ||
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| {{Specifications}} | ||
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| <h2 id="Browser_compatibility">Browser compatibility</h2> | ||
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| <p>{{Compat}}</p> | ||
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| <h2 id="See_also">See also</h2> | ||
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| <ul> | ||
| <li>{{domxref("KeyboardEvent")}}</li> | ||
| <li>{{domxref("MouseEvent")}}</li> | ||
| </ul> |