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AngularJS – ng-keydown Directive
The ng-keydown directive in AngularJS basically specifies a custom event on pressing the <down> key. We can perform multiple functions whenever the keydown event is called. This event also supports different types of elements like <input>, <select> and <textarea>.
Syntax
<element ng-keydown="expression">..content..</element>
Example − ngKeydown Directive
Create a file "ngKeydown.html" in your Angular project directory and copy-paste the following code snippet.
<!DOCTYPE html>
<html>
<head>
<title>ngKeydown Directive</title>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js">
</script>
<style type="text/css">
.keyDown {
background-color: blue;
color: white;
}
.keyUp {
background-color: white;
}
</style>
</head>
<body ng-app style="text-align: center;">
<h1 style="color:green">
Welcome to Tutorials Point
</h1>
<h2>
AngularJS | ngKeydown Directive
</h2>
<div>
<b>Enter Name: </b><input type="text"
ng-model="searchValue" ng-keydown="keyDown=true"
ng-keyup="keyDown=false" ng-class=
"{true:'keyDown', false:'keyUp'}[keyDown]" />
<br>
</div>
</body>
</html>Output
To run the above code, just go to your file and run it as a normal HTML file.
On keyDown −
Example 2
Create a file "ngKeydown.html" in your Angular project directory and copy-paste the following code snippet.
<!DOCTYPE html>
<html>
<head>
<title>ngKeydown Directive</title>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js">
</script>
</head>
<body ng-app style="text-align: center;">
<h1 style="color:green">
Welcome to Tutorials Point
</h1>
<h2>
AngularJS | ngKeydown Directive
</h2>
<div>
<input ng-keydown="count = count + 1" ng-init="count=0">
key down count: {{count}}
</div>
</body>
</html>Output
To run the above code, just go to your file and run it as a normal HTML file.
Will count the occurrence of keydown events −
Updated on: 08-Oct-2021
217 Views
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