The ng-pattern validation are use to validate the input fields with help of regular expressions. The regular expression can be number, email etc. If field is validated then return true otherwise return false.
In the below example, I am using the.
- input type="number" because I am going to validate the number.
- Required.
- ng-pattern attribute.
- number regular expression ["/^\d{0,9}(\.\d{1,9})?$/"]
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>ng pattern validation in angularjs</title>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.6/angular.js"></script>
</head>
<body>
<form name="myform">
<input type="number" require ng-pattern="/^\d{0,9}(\.\d{1,9})?$/">
<input type="submit">
</form>
</body>
</html>
The out put look like as below image.
