` ~ ! @ # $ % ^ & * ( ) _ + = { } | [ ] \ : ' ; " < > ? , . /
I want to restrict the above mentioned special characters and numbers in the input text field. I used the
ng-pattern="/^[a-zA-Z ]*$/"
to restrict the special characters. This pattern is blocking all the special characters. I am facing issue when I want to enter name "Pérez Gil" I don't want to restrict other language text.
Updates:
I think $parsers is the best options here. See the updated code and plunker.
Controller
angular.module('ngPatternExample', [])
.controller('ExampleController', ['$scope', function($scope) {
$scope.regex = /^[^`~!@#$%\^&*()_+={}|[\]\\:';"<>?,./1-9]*$/;
}])
.directive('myDirective', function() {
function link(scope, elem, attrs, ngModel) {
ngModel.$parsers.push(function(viewValue) {
var reg = /^[^`~!@#$%\^&*()_+={}|[\]\\:';"<>?,./1-9]*$/;
// if view values matches regexp, update model value
if (viewValue.match(reg)) {
return viewValue;
}
// keep the model value as it is
var transformedValue = ngModel.$modelValue;
ngModel.$setViewValue(transformedValue);
ngModel.$render();
return transformedValue;
});
}
return {
restrict: 'A',
require: 'ngModel',
link: link
};
});
Template
<input type="text" ng-model="model" id="input" name="input" my-directive />
Here's a updated example on Plunker
https://plnkr.co/edit/eEOJLi?p=preview
Old Answers:
Since you already have a list of characters that you want to restrict, you can spell them out in the ng-pattern expression like:
Controller
angular.module('ngPatternExample', [])
.controller('ExampleController', ['$scope', function($scope) {
$scope.regex = /^[^`~!@#$%\^&*()_+={}|[\]\\:';"<>?,./1-9]*$/;
}]);
Template
<input type="text" ng-model="model" id="input" name="input" ng-pattern="regex" />
Here's a working example on Plunker
Use Directives to restrict Special characters:
angular.module('scPatternExample', [])
.controller('scController', ['$scope', function($scope) {
}])
.directive('restrictSpecialCharactersDirective', function() {
function link(scope, elem, attrs, ngModel) {
ngModel.$parsers.push(function(viewValue) {
var reg = /^[a-zA-Z0-9]*$/;
if (viewValue.match(reg)) {
return viewValue;
}
var transformedValue = ngModel.$modelValue;
ngModel.$setViewValue(transformedValue);
ngModel.$render();
return transformedValue;
});
}
return {
restrict: 'A',
require: 'ngModel',
link: link
};
});
In Html:
<input type="text" ng-model="coupon.code" restrict-Special-Characters-Directive>
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<body ng-app="myApp">
<div ng-controller="myCtrl">
<input type="text" ng-change="Check(myValue)" ng-model="myValue" />
<p ng-show="test">The Special Character not accept.</p>
</div>
<script>
angular.module('myApp', [])
.controller('myCtrl', ['$scope', function($scope,ngModel) {
$scope.Check= function(x) {
var reg = /^[^`~!@#$%\^&*()_+={}|[\]\\:';"<>?,./]*$/;
if (!x.match(reg)) {
$scope.myValue = x.substring(0, x.length-1);
$scope.test=true;
}
else
{
$scope.test=false;
}
};
}]);
</script>
</body>
</html>
