在angularjs中实现session或localstorage CRUD表 [英] Implementing session or localstorage CRUD table in angularjs
本文介绍了在angularjs中实现session或localstorage CRUD表的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在尝试创建一个网站，我可以使用AngularJS在表格中添加，删除和编辑用户。所有这些功能都运行得非常好。
我现在尝试使用localStorage或SessionStorage来防止数据在刷新后被删除（在编辑，添加或删除用户之后）或转到下一个网页。
我完全不熟悉这些功能。请注意，代码片段由于某种原因无法正常运行，尽管在浏览器中运行程序时它完全有效。只是为了澄清我的代码中没有任何错误。任何帮助将非常感激。在此先感谢。
I am trying to create a website where I can add, delete and edit users in a table using AngularJS. All of those functions works perfectly well.
I am now trying to use localStorage or SessionStorage to prevent the data getting erased (after editing, adding or deleting users) after refreshing or moving to next web page.
I am not at all familiar with these functions. Please note that the code snippet won't run well for some reason, although it perfectly works when I run the program in the browser. Just to clarify that there aren't any errors in my code whatsoever. Any help would be hugely appreciated. Thanks in advance.
var myApp = angular.module("myApp", []);
myApp.controller("myController", function ($scope) {
console.log("in controller...");
$scope.newUser = {};
$scope.info = "";
$scope.users = [
{ email: "John@yahoo.com", firstName: "John", lastName: "Doe", contact:"281-283-2480", role:"Supplier-Admin", company:"Apple" },
{ email: "Rick@yahoo.com", firstName: "Rick", lastName: "Fraiser", contact: "987-283-2489", role: "Supplier-User", company: "Apple" },
{ email: "Sam@yahoo.com", firstName: "Sam", lastName: "Tarly", contact: "456-786-2480", role: "BuyerAdmin", company: "Samsung" }
];
$scope.users=JSON.parse(localStorage.getItem('users'));
$scope.saveUser = function () {
console.log("Saving...");
$scope.users.push($scope.newUser);
$scope.info = "New User Added Successfully!";
$scope.newUser = {};
localStorage.setItem('users', JSON.stringify($scope.users));
};
$scope.selectUser = function (user) {
$scope.clickedUser = user;
};
$scope.deleteUser = function () {
console.log($scope.users.indexOf($scope.clickedUser));
$scope.users.splice($scope.users.indexOf($scope.clickedUser), 1);
$scope.info = "User Deleted Successfully!";
};
$scope.clearInfo = function () {
$scope.info = "";
};
});
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>User Management- M&M</title>
<link rel="icon" href="images/logo.jpg">
<link href="css/bootstrap.min.css" rel="stylesheet" />
<script type="text/javascript" src="js/angular.min.js"></script>
<script type="text/javascript" src="js/app.js"></script>
<!--<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">-->
<!--<link href="CSS/Home.css" rel="stylesheet" />-->
</head>
<body ng-app="myApp" ng-controller="myController">
<nav class="navbar navbar-expand-lg navbar-light" id="mainNav">
<div class="container">
<a class="navbar-brand js-scroll-trigger" href="index.html">
<img src="images/logo.jpg" alt="M&M" width="110" />
</a>
<button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarResponsive" aria-controls="navbarResponsive" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarResponsive">
<ul class="navbar-nav ml-auto">
<li class="nav-item">
<a class="nav-link js-scroll-trigger" href="LoginPage.html">Login</a>
</li>
<li class="nav-item">
<a class="nav-link active js-scroll-trigger" href="User_Mgmt.html">User Management</a>
</li>
<li class="nav-item">
<a class="nav-link js-scroll-trigger" href="CompanyManagement.html">Company Management</a>
</li>
<li class="nav-item">
<a class="nav-link js-scroll-trigger" href="ProductPage.html">Product Management</a>
</li>
<li class="nav-item">
<a class="nav-link js-scroll-trigger" href="ShoppingCart_Group5_Team1.html">Shopping Cart</a>
</li>
</ul>
</div>
</div>
</nav>
<header class="subhead">
<div class="container">
<div class="row">
<div class="col-xs-6 col-md-6">
<input class="form-control" id="ex3" type="text" placeholder="Search Users" ng-model="searchUsers">
</div>
<div class="col-xs-6 col-md-6">
<button type="button" class="btn btn-info btn-lg float-right" data-toggle="modal" data-target="#myModal">Add New</button>
</div>
<div class="clearfix"></div>
</div>
<hr>
<table class="table table-striped table-hover">
<thead>
<tr class="table100-head">
<th>Email</th>
<th>First Name</th>
<th>Last Name</th>
<th>Contact</th>
<th>Role</th>
<th>Company</th>
<th>Edit</th>
<th>Delete</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="user in users | filter: searchUsers">
<td>{{user.email}}</td>
<td>{{user.firstName}}</td>
<td>{{user.lastName}}</td>
<td>{{user.contact}}</td>
<td>{{user.role}}</td>
<td>{{user.company}}</td>
<td>
<button type="button" class="btn btn-info" data-toggle="modal" data-target="#myModalEdit" ng-click="selectUser(user)">Edit</button>
</td>
<td>
<button type="button" class="btn btn-danger" data-toggle="modal" data-target="#myModalDelete" ng-click="selectUser(user)">Delete</button>
</td>
</tr>
</tbody>
</table>
</div>
<!-- Pop Up-ADD NEW USER Modal -->
<div class="modal fade" id="myModal" role="dialog">
<div class="modal-dialog">
<!-- Modal content-->
<div class="modal-content">
<div class="modal-header">
<h4 class="modal-title">New User Registration</h4>
<button type="button" class="close" data-dismiss="modal">×</button>
</div>
<div class="modal-body">
<form class="form-horizontal" action="/action_page.php">
<div class="form-group">
<label class="control-label col-sm-2">Email</label>
<div class="col-sm-10">
<input type="email" class="form-control" placeholder="Enter Email" ng-model="newUser.email">
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-2">First Name</label>
<div class="col-sm-10">
<input type="text" class="form-control" placeholder="Enter First Name" ng-model="newUser.firstName">
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-2">Last Name</label>
<div class="col-sm-10">
<input type="text" class="form-control" placeholder="Enter Last Name" ng-model="newUser.lastName">
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-2">Contact</label>
<div class="col-sm-10">
<input type="tel" class="form-control" placeholder="Enter Contact" ng-model="newUser.contact">
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-2">Role</label>
<div class="col-sm-10">
<input type="text" class="form-control" placeholder="Enter Role" ng-model="newUser.role">
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-2">Company</label>
<div class="col-sm-10">
<input type="text" class="form-control" placeholder="Enter Company" ng-model="newUser.company">
</div>
</div>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<button type="submit" class="btn btn-default" ng-click="saveUser()" data-dismiss="modal">Submit</button>
</div>
</div>
</form>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
</div>
</div>
</div>
</div>
<!-- Pop Up-EDIT USER Modal -->
<div class="modal fade" id="myModalEdit" role="dialog">
<div class="modal-dialog">
<!-- Modal content-->
<div class="modal-content">
<div class="modal-header">
<h4 class="modal-title">Edit User</h4>
<button type="button" class="close" data-dismiss="modal">×</button>
</div>
<div class="modal-body">
<form class="form-horizontal" action="/action_page.php">
<div class="form-group">
<label class="control-label col-sm-2">Email</label>
<div class="col-sm-10">
<input type="email" class="form-control" placeholder="Enter Email" ng-model="clickedUser.email">
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-2">First Name</label>
<div class="col-sm-10">
<input type="text" class="form-control" placeholder="Enter First Name" ng-model="clickedUser.firstName">
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-2">Last Name</label>
<div class="col-sm-10">
<input type="text" class="form-control" placeholder="Enter Last Name" ng-model="clickedUser.lastName">
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-2">Contact</label>
<div class="col-sm-10">
<input type="tel" class="form-control" placeholder="Enter Contact" ng-model="clickedUser.contact">
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-2">Role</label>
<div class="col-sm-10">
<input type="text" class="form-control" placeholder="Enter Role" ng-model="clickedUser.role">
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-2">Company</label>
<div class="col-sm-10">
<input type="text" class="form-control" placeholder="Enter Company" ng-model="clickedUser.company">
</div>
</div>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<button type="submit" class="btn btn-default" data-dismiss="modal">Submit</button>
</div>
</div>
</form>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
</div>
</div>
</div>
</div>
<!-- Pop Up-DELETE USER Modal -->
<div class="modal fade" id="myModalDelete" role="dialog">
<div class="modal-dialog">
<!-- Modal content-->
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal">×</button>
<h5 class="modal-title">Are You Sure?</h5>
</div>
<div class="modal-body">
<h5 style="color: red">You are going to delete the user "{{clickedUser.firstName}}"</h5>
<br />
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal" ng-click="deleteUser()">Yes</button>
<button type="button" class="btn btn-default" data-dismiss="modal">No</button>
</div>
</div>
</div>
</div>
</header>
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<!-- Include all compiled plugins (below), or include individual files as needed -->
<script src="js/bootstrap.min.js"></script>
</body>
</html>
What I have tri ed:
The CRUD functions work perfectly well. Now I am trying to put local or session storage so that the data(after adding, editing and deleting a user) wont get erased when I refresh the page or coming back from another web page.
What I have tried:
The CRUD functions work perfectly well. Now I am trying to put local or session storage so that the data(after adding, editing and deleting a user) wont get erased when I refresh the page or coming back from another web page.
推荐答案
scope) {
console.log(\"in controller...\");
scope) { console.log("in controller...");
scope.newUser = {};
scope.newUser = {};
scope.info = \"\";
scope.info = "";
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