Federico Elles Federico Elles - 6 months ago 34
AngularJS Question

How to autocapitalize the first character in an input field in AngularJS?

How to autocapitalize the first character in an input field inside an AngularJS form element?

I saw the jQuery solution already, but believe this has to be done differently in AngularJS by using a directive.

Answer

Yes, you need to define a directive and define your own parser function:

myApp.directive('capitalizeFirst', function($parse) {
   return {
     require: 'ngModel',
     link: function(scope, element, attrs, modelCtrl) {
        var capitalize = function(inputValue) {
           if (inputValue === undefined) { inputValue = ''; }
           var capitalized = inputValue.charAt(0).toUpperCase() +
                             inputValue.substring(1);
           if(capitalized !== inputValue) {
              modelCtrl.$setViewValue(capitalized);
              modelCtrl.$render();
            }         
            return capitalized;
         }
         modelCtrl.$parsers.push(capitalize);
         capitalize($parse(attrs.ngModel)(scope)); // capitalize initial value
     }
   };
});

HTML:

<input type="text" ng-model="obj.name" capitalize-first>

Fiddle