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Angular Built-in directives

This example demonstrates how Angular expressions are evaluated when using type="text" and type="number" for the input element. Consider the following controller and view:


var app = angular.module('app', []);
 app.controller('ctrl', function($scope) {
 $scope.textInput = {
 value: '5'
 $scope.numberInput = {
 value: 5


<div ng-app="app" ng-controller="ctrl">
 <input type="text" ng-model="textInput.value">
 {{ textInput.value + 5 }}
 <input type="number" ng-model="numberInput.value">
 {{ numberInput.value + 5 }}

When using + in an expression bound to text input, the operator will concatenate the strings (first example), displaying 55 on the screen*.
When using + in an expression bound to number input, the operator return the sum of the numbers (second example), displaying 10 on the screen*.

* - That is until the user changes the value in the input field, afterward the display will change accordingly.


In this page (written and validated by ) you learned about AngularJS Built-in directives . What's Next? If you are interested in completing AngularJS tutorial, your next topic will be learning about: AngularJS ngIf.

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