<!-- index.html -->
<!DOCTYPE html>
<html>
<head>
<!-- CSS ===================== -->
<!-- load bootstrap -->
<link rel="stylesheet" href="http://netdna.bootstrapcdn.com/bootstrap/3.0.3/css/bootstrap.min.css">
<style>
body { padding-top:30px; }
</style>
<!-- JS ===================== -->
<!-- load angular -->
<script src="http://code.angularjs.org/1.2.6/angular.js"></script>
<script src="app.js"></script>
</head>
<!-- apply angular app and controller to our body -->
<body ng-app="validationApp" ng-controller="mainController">
<div class="container">
<div class="col-sm-8 col-sm-offset-2">
<!-- PAGE HEADER -->
<div class="page-header"><h1>AngularJS Form Validation</h1></div>
<!-- FORM -->
<!-- pass in the variable if our form is valid or invalid -->
<form name="userForm" ng-submit="submitForm(userForm.$valid)" novalidate> <!-- novalidate prevents HTML5 validation since we will be validating ourselves -->
<!-- NAME -->
<div class="form-group">
<label>Name</label>
<input type="text" name="name" class="form-control" ng-model="name" required>
</div>
<!-- USERNAME -->
<div class="form-group">
<label>Username</label>
<input type="text" name="username" class="form-control" ng-model="user.username" ng-minlength="3" ng-maxlength="8">
</div>
<!-- EMAIL -->
<div class="form-group">
<label>Email</label>
<input type="email" name="email" class="form-control" ng-model="email">
</div>
<!-- SUBMIT BUTTON -->
<button type="submit" class="btn btn-primary">Submit</button>
</form>
</div><!-- col-sm-8 -->
</div><!-- /container -->
</body>
</html>
<input
ng-model="{ string }"
name="{ string }"
required
ng-required="{ boolean }"
ng-minlength="{ number }"
ng-maxlength="{ number }"
ng-pattern="{ string }"
ng-change="{ string }">
</input>
// app.js
// create angular app
var validationApp = angular.module('validationApp', []);
// create angular controller
validationApp.controller('mainController', function($scope) {
// function to submit the form after all validation has occurred
$scope.submitForm = function(isValid) {
// check to make sure the form is completely valid
if (isValid) {
alert('our form is amazing');
}
};
});
<!-- index.html --> ... <!-- SUBMIT BUTTON --> <button type="submit" class="btn btn-primary" ng-disabled="userForm.$invalid">Submit</button> ...
<!-- index.html -->
...
<!-- NAME -->
<div class="form-group">
<label>Name</label>
<input type="text" name="name" class="form-control" ng-model="name" required>
<p ng-show="userForm.name.$invalid && !userForm.name.$pristine" class="help-block">You name is required.</p>
</div>
<!-- USERNAME -->
<div class="form-group">
<label>Username</label>
<input type="text" name="username" class="form-control" ng-model="user.username" ng-minlength="3" ng-maxlength="8">
<p ng-show="userForm.username.$error.minlength" class="help-block">Username is too short.</p>
<p ng-show="userForm.username.$error.maxlength" class="help-block">Username is too long.</p>
</div>
<!-- EMAIL -->
<div class="form-group">
<label>Email</label>
<input type="email" name="email" class="form-control" ng-model="email">
<p ng-show="userForm.email.$invalid && !userForm.email.$pristine" class="help-block">Enter a valid email.</p>
</div>
...
.ng-valid { }
.ng-invalid { }
.ng-pristine { }
.ng-dirty { }
/* really specific css rules applied by angular */
.ng-invalid-required { }
.ng-invalid-minlength { }
.ng-valid-max-length { }
<!-- index.html -->
...
<!-- NAME -->
<div class="form-group" ng-class="{ 'has-error' : userForm.name.$invalid && !userForm.name.$pristine }">
<label>Name</label>
<input type="text" name="name" class="form-control" ng-model="user.name" required>
<p ng-show="userForm.name.$invalid && !userForm.name.$pristine" class="help-block">You name is required.</p>
</div>
<!-- USERNAME -->
<div class="form-group" ng-class="{ 'has-error' : userForm.username.$invalid && !userForm.username.$pristine }">
<label>Username</label>
<input type="text" name="username" class="form-control" ng-model="user.username" ng-minlength="3" ng-maxlength="8">
<p ng-show="userForm.username.$error.minlength" class="help-block">Username is too short.</p>
<p ng-show="userForm.username.$error.maxlength" class="help-block">Username is too long.</p>
</div>
<!-- EMAIL -->
<div class="form-group" ng-class="{ 'has-error' : userForm.email.$invalid && !userForm.email.$pristine }">
<label>Email</label>
<input type="email" name="email" class="form-control" ng-model="user.email">
<p ng-show="userForm.email.$invalid && !userForm.email.$pristine" class="help-block">Enter a valid email.</p>
</div>
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