angular.isNumber
angular.isNumber: This function is used to check whether a string(reference) is number or not. The function isFunction will return true if passed reference is function else it will return false.
angular.isNumber – Check if string is number | Example
Sytax for angular.isElement is as below-
Syntax –
angular.isNumber Syntax
angular.isNumber(value); |
The above function checks whether the passed string(reference) is number or not.
Arguments
- value : This is reference to check.
Returns
- boolean : Returns true if reference is number else it will return false.
Now let us create a simple example to understand the above function.
Example
angular.isNumber – Validate number Example
<!DOCTYPE html>
<html lang="en">
<head>
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.2.13/angular.min.js"></script>
<script>
var myApp = angular.module("myApp", []);
myApp.controller("myController", function($scope) {
var a = 'test';
var b = 10;
$scope.result1 = '';
$scope.result2 = '';
$scope.chackVars = function() {
if(angular.isNumber(a)){
$scope.result1 = 'Number';
}else{
$scope.result1 = 'Not a number';
}
if(angular.isNumber(b)){
$scope.result2 = 'Number';
}else{
$scope.result2 = 'Not a number';
}
}
});
</script>
</head>
<body>
<div ng-app="myApp">
<div ng-controller="myController">
<button ng-click ="chackVars()" >Check Vars</button>
<br>
Result for a = {{result1}}<br>
Result for b = {{result2}}
</div>
</div>
</body>
</html>
|
If you run the above example it will produce the output something like this –
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📖 Read More
- 1. angular.isObject
- 2. angular.isString
- 3. angular.isUndefined
- 4. angular.merge
- 5. a - Anchor Tag Directive
