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AngularJS Basic Tutorial

AngularJS ng-keydown directive

AngularJS Reference Manual

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="https://cdn.staticfile.org/angular.js/1.4.6/angular.min.js">/script>
</head>
<body　ng-app="">
<input　ng-keydown="count　=　count"　+　1"　ng-init="count=0"　/>
<h1>{{count}}</h1>
<p>This example automatically increments the variable "count" each time a key is pressed in the input box.　1。</p>
</body>
</html>
Test to see ‹/›

Definition and Usage

ng-keydown The directive is used to tell AngularJS the operation required when a key is pressed on the specified HTML element.

ng-keydown The directive does not override the native onkeydown event of the element, when the event is triggered,ng-keydown Both the expression and the native onkeydown event will be executed.

The order of key press events:

  • Keydown

  • Keypress

  • Keyup

    Syntax

    　　　<element　ng-keydown="expression"></element>

    <input>, <select>, <textarea>, and other editable elements support this directive.

    Parameter Value

    ValueDescription
    expressionPress the key to execute the expression.

    AngularJS Reference Manual

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