The event attribute onkeypress that is triggered when the user presses a key (on the keyboard) in html

Example

Execute a piece of JavaScript when the user presses a key:

<input type="text" onkeypress="displayResult()">

Browser support

IE

Firefox

Chrome

Safari

Opera

All major browsers support the onkeypress attribute.

Definition and Usage

The onkeypress property is triggered when the user presses a key (on the keyboard).

Tip: The order of events relative to the onkeypress event:

onkeydown onkeypress onkeyup

Note: In any browser, the onkeypress event will not be triggered by all key presses (such as ALT , CTRL, SHIFT, ESC).

Note: The onkeypress attribute is not applicable to the following elements: , ,
, , ,

Differences between HTML 4.01 and HTML5

None.

Syntax

<element onkeypress="script">

Attribute value

Value	Description
script	Script to run when onkeypress occurs.

<input class="text" type="text" name="PAGE" size="60" maxlength="2" value="<%=bg.getPAGE()%>" onkeypress="if(event.keyCode<48 || event.keyCode>57) event.returnValue=false;">

Error report:

Multiple annotations found at this line:
- Invalid character used in text string (57) event.returnValue=false;">).
- Syntax error on token "||", ) expected
- Attribute value (if(event.keyCode<48 || ) not closed.
- Undefined attribute name (event.keyCode).

Just put greater than 57 in the front. . . Try it yourself

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