AngularJS tut 20: AngularJS và W3.CSS

By DragonKnightMT Last updated Th11 9, 2021

Bạn có thể dễ dàng sử dụng bảng định kiểu w3.css cùng với AngularJS. Chương này trình bày cách thức.

W3.CSS

Để đưa W3.CSS vào ứng dụng AngularJS của bạn, hãy thêm dòng sau vào đầu tài liệu của bạn:<link rel=”stylesheet” href=”https://www.w3schools.com/w3css/4/w3.css”>

Nếu bạn muốn nghiên cứu W3.CSS, hãy truy cập Hướng dẫn về W3.CSS của chúng tôi .

Dưới đây là một ví dụ HTML hoàn chỉnh, với tất cả các chỉ thị AngularJS và các lớp W3.CSS được giải thích.

Mã HTML

<!DOCTYPE html>
<html>
<link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
<body ng-app="myApp" ng-controller="userCtrl">

<div class="w3-container">

<h3>Users</h3>

<table class="w3-table w3-bordered w3-striped">
  <tr>
    <th>Edit</th>
    <th>First Name</th>
    <th>Last Name</th>
  </tr>
  <tr ng-repeat="user in users">
    <td>
      <button class="w3-btn w3-ripple" ng-click="editUser(user.id)">&#9998; Edit</button>
    </td>
    <td>{{ user.fName }}</td>
    <td>{{ user.lName }}</td>
  </tr>
</table>
<br>
<button class="w3-btn w3-green w3-ripple" ng-click="editUser('new')">&#9998; Create New User</button>

<form ng-hide="hideform">
  <h3 ng-show="edit">Create New User:</h3>
  <h3 ng-hide="edit">Edit User:</h3>
    <label>First Name:</label>
    <input class="w3-input w3-border" type="text" ng-model="fName" ng-disabled="!edit" placeholder="First Name">
  <br>
    <label>Last Name:</label>
    <input class="w3-input w3-border" type="text" ng-model="lName" ng-disabled="!edit" placeholder="Last Name">
  <br>
    <label>Password:</label>
    <input class="w3-input w3-border" type="password" ng-model="passw1" placeholder="Password">
  <br>
    <label>Repeat:</label>
    <input class="w3-input w3-border" type="password" ng-model="passw2" placeholder="Repeat Password">
 <br>
<button class="w3-btn w3-green w3-ripple" ng-disabled="error || incomplete">&#10004; Save Changes</button>
</form>

</div>

<script src= "myUsers.js"></script>

</body>
</html>

Hãy tự mình thử »

Giải thích Chỉ thị (Đã sử dụng ở trên)

AngularJS Directive	Description
<body ng-app	Defines an application for the <body> element
<body ng-controller	Defines a controller for the <body> element
<tr ng-repeat	Repeats the <tr> element for each user in users
<button ng-click	Invoke the function editUser() when the <button> element is clicked
<h3 ng-show	Show the <h3>s element if edit = true
<h3 ng-hide	Hide the form if hideform = true, and hide the <h3> element if edit = true
<input ng-model	Bind the <input> element to the application
<button ng-disabled	Disables the <button> element if error or incomplete = true

Giải thích về các lớp W3.CSS

Element	Class	Defines
<div>	w3-container	A content container
<table>	w3-table	A table
<table>	w3-bordered	A bordered table
<table>	w3-striped	A striped table
<button>	w3-btn	A button
<button>	w3-green	A green button
<button>	w3-ripple	A ripple effect when you click the button
<input>	w3-input	An input field
<input>	w3-border	A border on the input field

Mã JavaScript

myUsers.js

angular.module('myApp', []).controller('userCtrl', function($scope) {
$scope.fName = '';
$scope.lName = '';
$scope.passw1 = '';
$scope.passw2 = '';
$scope.users = [
{id:1, fName:'Hege', lName:"Pege" },
{id:2, fName:'Kim',  lName:"Pim" },
{id:3, fName:'Sal',  lName:"Smith" },
{id:4, fName:'Jack', lName:"Jones" },
{id:5, fName:'John', lName:"Doe" },
{id:6, fName:'Peter',lName:"Pan" }
];
$scope.edit = true;
$scope.error = false;
$scope.incomplete = false;
$scope.hideform = true;
$scope.editUser = function(id) {
  $scope.hideform = false;
  if (id == 'new') {
    $scope.edit = true;
    $scope.incomplete = true;
    $scope.fName = '';
    $scope.lName = '';
    } else {
    $scope.edit = false;
    $scope.fName = $scope.users[id-1].fName;
    $scope.lName = $scope.users[id-1].lName;
  }
};

$scope.$watch('passw1',function() {$scope.test();});
$scope.$watch('passw2',function() {$scope.test();});
$scope.$watch('fName', function() {$scope.test();});
$scope.$watch('lName', function() {$scope.test();});

$scope.test = function() {
  if ($scope.passw1 !== $scope.passw2) {
    $scope.error = true;
    } else {
    $scope.error = false;
  }
  $scope.incomplete = false;
  if ($scope.edit && (!$scope.fName.length ||
  !$scope.lName.length ||
  !$scope.passw1.length || !$scope.passw2.length)) {
     $scope.incomplete = true;
  }
};

});

Giải thích mã JavaScript

Scope Properties	Used for
$scope.fName	Model variable (user first name)
$scope.lName	Model variable (user last name)
$scope.passw1	Model variable (user password 1)
$scope.passw2	Model variable (user password 2)
$scope.users	Model variable (array of users)
$scope.edit	Set to true when user clicks on ‘Create user’.
$scope.hideform	Set to false when user clicks on ‘Edit’ or ‘Create user’.
$scope.error	Set to true if passw1 not equal passw2
$scope.incomplete	Set to true if any field is empty (length = 0)
$scope.editUser	Sets model variables
$scope.$watch	Watches model variables
$scope.test	Tests model variables for errors and incompleteness

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