1577456285
How to Implement AES Encrypt and Decrypt Data in Angular 8
Introduction
In this article, You’ll learn how to implement AES encryption and decryption in Angular 8 while developing an application.
Concepts
The AES is the advanced encryption standard. So, these algorithms have been the standard of encryption for organizations like the NSA and anyone else that wants to hide their data. So, it’s a critical part of the computer science curriculum. that you should understand if you’re a software developer.
Actually, DES and AES were both developed to solve the same problem in 1971. this algorithm was invented by two Belgian cryptographers, Vincent Rijmen and Joan Daemen. IBM was the inventor of this algorithm called DES. it gradually became insecure and crackable as computer software or as computer hardware.
In the late 1990s, the government the NSA, in particular, decided that they needed to have an improved algorithm. so they put open a worldwide search and took ideas from fifteen different groups. then they create something that has been a standard for now over 20 years so these algorithms are known as symmetric ciphers.
You would have a single password or key that would encrypt your document and then that same key is going to unlock the document. so that key is important the alternative to symmetric encryption is called asymmetric encryption.
When to use AES Encryption
1. If you want to encrypt confidential data into a decryptable format, for example – if you need to send some sensitive data via e-mail.
2. The decryption of the encrypted data is possible only when you know the right password.
Now, It is very easy to implement the AES encryption and decryption in Angular 8 with the help of crypto-js.
Let’s, create a new project with the below command.
ng new EncryptionDescryptionSample
After that, we need to install a crypto.js file, by the below command.
npm install crypto-js --save
For better responsive UI, we also install bootstrap by the below command.
npm install bootstrap --save
Now, Let’s go an open “app.component.html” file and replace the existing code with the following code.
<h1 class="text-center">Encrypt-Decrypt with AES</h1>
<br>
<div>
<div class="row">
<div class="col-sm-6">
<button type="button" class="btn btn-primary btn-lg btn-block">
Encryption
</button>
<br>
<div class="form-group">
<label for="txtTextToConvert">Plain Text</label>
<input type="text" class="form-control" placeholder="Enter text you want to encrypt" [(ngModel)]="plainText">
</div>
<div class="form-group">
<label for="txtPassword">Password</label>
<input type="password" class="form-control" placeholder="Enter encryption password" [(ngModel)]="encPassword">
</div>
<textarea class="form-control" readonly rows="3">{{conversionEncryptOutput}}</textarea>
<br>
<button type="button" class="btn btn-success float-right" (click)="convertText('encrypt')">Encrypt</button>
</div>
<div class="col-sm-6">
<button type="button" class="btn btn-dark btn-lg btn-block">
Decryption
</button>
<br>
<div class="form-group">
<label for="txtTextToConvert">Encrypted Text</label>
<input type="text" class="form-control" placeholder="Enter text you want to decrypt" [(ngModel)]="encryptText">
</div>
<div class="form-group">
<label for="txtPassword">Password</label>
<input type="password" class="form-control" placeholder="Enter decryption password" [(ngModel)]="decPassword">
</div>
<textarea class="form-control" readonly rows="3">{{conversionDecryptOutput}}</textarea>
<br>
<button type="button" class="btn btn-success float-right" (click)="convertText('decrypt')">Decrypt</button>
</div>
</div>
</div>
After that, open “app.component.ts” file and write the following code, we used the Encrypt method of AES and passed our plain text with a password to encrypt the string. then Similarly, we used the Decrypt method of AES and passed our encrypted text with a password to decrypt the string. Be assured that both times, your password we’ll be the same. so, using both of these methods, you just need to import “CryptoJS” from crypto-js libraries.
import { Component } from '@angular/core';
import * as CryptoJS from 'crypto-js';
@Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent {
title = 'EncryptionDecryptionSample';
plainText:string;
encryptText: string;
encPassword: string;
decPassword:string;
conversionEncryptOutput: string;
conversionDecryptOutput:string;
constructor() {
}
//method is used to encrypt and decrypt the text
convertText(conversion:string) {
if (conversion=="encrypt") {
this.conversionEncryptOutput = CryptoJS.AES.encrypt(this.plainText.trim(), this.encPassword.trim()).toString();
}
else {
this.conversionDecryptOutput = CryptoJS.AES.decrypt(this.encryptText.trim(), this.decPassword.trim()).toString(CryptoJS.enc.Utf8);
}
}
}
Now, Run the project by using the below command.
ng serve --o
Here is the output.
I hope this tutorial will surely help and you if you liked this tutorial, please consider sharing it with others. Thank you !
#Angular #Angular8 #AES #Cryptojs #angular
What is GEEK
Buddha Community
1620466520
Your Data Architecture: Simple Best Practices for Your Data Strategy
If you accumulate data on which you base your decision-making as an organization, you should probably think about your data architecture and possible best practices.
If you accumulate data on which you base your decision-making as an organization, you most probably need to think about your data architecture and consider possible best practices. Gaining a competitive edge, remaining customer-centric to the greatest extent possible, and streamlining processes to get on-the-button outcomes can all be traced back to an organization’s capacity to build a future-ready data architecture.
In what follows, we offer a short overview of the overarching capabilities of data architecture. These include user-centricity, elasticity, robustness, and the capacity to ensure the seamless flow of data at all times. Added to these are automation enablement, plus security and data governance considerations. These points from our checklist for what we perceive to be an anticipatory analytics ecosystem.
#big data #data science #big data analytics #data analysis #data architecture #data transformation #data platform #data strategy #cloud data platform #data acquisition
1685205672
Create Pagination Using jQuery
In this article, we will see how to create pagination using jquery. We will create jquery pagination using multiple ways. You can create pagination using different ways like creating pagination using simple HTML, you can create pagination in laravel using paginate() method. Also, create pagination laravel livewire, pagination using bootstrap.
We will create simple jquery pagination. Also, create pagination using jquery without a plugin and create jquery pagination with next and previous buttons
So, let's see dynamic pagination in jquery and bootstrap pagination in jquery
Example:
In this example, we will create pagination using jquery without using a plugin. Also, you can customize the pagination.
<!DOCTYPE html>
<html lang="en">
<head>
<title>How To Create Pagination Using jQuery - Websolutionstuff</title>
<style>
.current {
color: green;
}
#pagin li {
display: inline-block;
font-weight: 500;
}
.prev {
cursor: pointer;
}
.next {
cursor: pointer;
}
.last {
cursor:pointer;
margin-left:10px;
}
.first {
cursor:pointer;
margin-right:10px;
}
.line-content, #pagin, h3 {
text-align:center;
}
.line-content {
margin-top:20px;
}
#pagin {
margin-top:10px;
padding-left:0;
}
h3 {
margin:50px 0;
}
</style>
</head>
<body>
<h3>How To Create Pagination Using jQuery - Websolutionstuff</h3>
<div class="line-content">This is Page 1 content example with next and prev.</div>
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<ul id="pagin"></ul>
</body>
</html>
<script src="https://code.jquery.com/jquery-3.6.1.min.js" integrity="sha256-o88AwQnZB+VDvE9tvIXrMQaPlFFSUTR+nldQm1LuPXQ=" crossorigin="anonymous"></script>
<script>
pageSize = 5;
incremSlide = 5;
startPage = 0;
numberPage = 0;
var pageCount = $(".line-content").length / pageSize;
var totalSlidepPage = Math.floor(pageCount / incremSlide);
for(var i = 0 ; i<pageCount;i++){
$("#pagin").append('<li><a href="#">'+(i+1)+'</a></li> ');
if(i>pageSize){
$("#pagin li").eq(i).hide();
}
}
var prev = $("<li/>").addClass("prev").html("Prev").click(function(){
startPage-=5;
incremSlide-=5;
numberPage--;
slide();
});
prev.hide();
var next = $("<li/>").addClass("next").html("Next").click(function(){
startPage+=5;
incremSlide+=5;
numberPage++;
slide();
});
$("#pagin").prepend(prev).append(next);
$("#pagin li").first().find("a").addClass("current");
slide = function(sens){
$("#pagin li").hide();
for(t=startPage;t<incremSlide;t++){
$("#pagin li").eq(t+1).show();
}
if(startPage == 0){
next.show();
prev.hide();
}else if(numberPage == totalSlidepPage ){
next.hide();
prev.show();
}else{
next.show();
prev.show();
}
}
showPage = function(page) {
$(".line-content").hide();
$(".line-content").each(function(n) {
if (n >= pageSize * (page - 1) && n < pageSize * page){
$(this).show();
}
});
}
showPage(1);
$("#pagin li a").eq(0).addClass("current");
$("#pagin li a").click(function() {
$("#pagin li a").removeClass("current");
$(this).addClass("current");
showPage(parseInt($(this).text()));
});
</script>Output:
Example:
In this example, we will create bootstrap pagination with help of jquery.
<!DOCTYPE html>
<html lang="en">
<head>
<title>How To Create Bootstrap Pagination Using jQuery - Websolutionstuff</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">
<style>
#data tr {
display: none;
}
.page {
margin: 30px;
}
table, th, td {
border: 1px solid black;
}
#data {
font-family: Arial, Helvetica, sans-serif;
border-collapse: collapse;
width: 100%;
}
#data td, #data th {
border: 1px solid #ddd;
padding: 8px;
}
#data tr:nth-child(even) {
background-color: #f2f2f2;
}
#data tr:hover {
background-color: #ddd;
}
#data th {
padding-top: 12px;
padding-bottom: 12px;
text-align: left;
background-color: #03aa96;
color: white;
}
#nav a {
color: #03aa96;
font-size: 20px;
margin-top: 22px;
font-weight: 600;
}
a:hover, a:visited, a:link, a:active {
text-decoration: none;
}
#nav {
margin-top: 20px;
}
</style>
</head>
<body>
<h2 align="center" class="mt-4">How To Create Bootstrap Pagination Using jQuery - Websolutionstuff</h2>
<div class="page" align="center">
<table id="data">
<tr>
<th>Id</th>
<th>Name</th>
<th>Country</th>
</tr>
<tr>
<td>1</td>
<td>Maria</td>
<td>Germany</td>
</tr>
<tr>
<td>2</td>
<td>Christina</td>
<td>Sweden</td>
</tr>
<tr>
<td>3</td>
<td>Chang</td>
<td>Mexico</td>
</tr>
<tr>
<td>4</td>
<td>Mendel</td>
<td>Austria</td>
</tr>
<tr>
<td>5</td>
<td>Helen</td>
<td>United Kingdom</td>
</tr>
<tr>
<td>6</td>
<td>Philip</td>
<td>Germany</td>
</tr>
<tr>
<td>7</td>
<td>Tannamuri</td>
<td>Canada</td>
</tr>
<tr>
<td>8</td>
<td>Rovelli</td>
<td>Italy</td>
</tr>
<tr>
<td>9</td>
<td>Dell</td>
<td>United Kingdom</td>
</tr>
<tr>
<td>10</td>
<td>Trump</td>
<td>France</td>
</tr>
</table>
</div>
</body>
</html>
<script src="https://code.jquery.com/jquery-3.6.1.min.js" integrity="sha256-o88AwQnZB+VDvE9tvIXrMQaPlFFSUTR+nldQm1LuPXQ=" crossorigin="anonymous"></script>
<script>
$(document).ready (function () {
$('#data').after ('<div id="nav"></div>');
var rowsShown = 5;
var rowsTotal = $('#data tbody tr').length;
var numPages = rowsTotal/rowsShown;
for (i = 0;i < numPages;i++) {
var pageNum = i + 1;
$('#nav').append ('<a href="#" rel="'+i+'">'+pageNum+'</a> ');
}
$('#data tbody tr').hide();
$('#data tbody tr').slice (0, rowsShown).show();
$('#nav a:first').addClass('active');
$('#nav a').bind('click', function() {
$('#nav a').removeClass('active');
$(this).addClass('active');
var currPage = $(this).attr('rel');
var startItem = currPage * rowsShown;
var endItem = startItem + rowsShown;
$('#data tbody tr').css('opacity','0.0').hide().slice(startItem, endItem).
css('display','table-row').animate({opacity:1}, 300);
});
});
</script>Output:
Example:
In this example, we will create pagination using the twbsPagination plugin. This jQuery plugin simplifies the usage of Bootstrap Pagination.
<!DOCTYPE html>
<html lang="en">
<head>
<title>jQuery Pagination Using Plugin - Websolutionstuff</title>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha.6/css/bootstrap.min.css">
<style>
.wrapper{
margin: 60px auto;
text-align: center;
}
h2{
margin-bottom: 1.25em;
}
#pagination-demo{
display: inline-block;
margin-bottom: 1.75em;
}
#pagination-demo li{
display: inline-block;
}
.page-content{
background: #eee;
display: inline-block;
padding: 10px;
width: 100%;
max-width: 660px;
}
</style>
</head>
<body>
<div class="wrapper">
<div class="container">
<div class="row">
<div class="col-sm-12">
<h2>jQuery Pagination Using Plugin - Websolutionstuff</h2>
<p>Simple pagination using the TWBS pagination JS library.</p>
<ul id="pagination-demo" class="pagination-sm"></ul>
</div>
</div>
<div id="page-content" class="page-content">Page 1</div>
</div>
</div>
</body>
</html>
<script src="https://code.jquery.com/jquery-3.6.1.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha.6/js/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twbs-pagination/1.4.1/jquery.twbsPagination.min.js"></script>
<script>
$(document).ready (function () {
$('#pagination-demo').twbsPagination({
totalPages: 16,
visiblePages: 6,
next: 'Next',
prev: 'Prev',
onPageClick: function (event, page) {
$('#page-content').text('Page ' + page) + ' content here';
}
});
});
</script>Output:
Original article source at: https://websolutionstuff.com/
1685216760
Создание пагинации с помощью jQuery
В этой статье мы увидим, как создать пагинацию с помощью jquery. Мы создадим разбиение на страницы jquery, используя несколько способов. Вы можете создать разбиение на страницы, используя разные способы, такие как создание разбиения на страницы с помощью простого HTML, вы можете создать разбиение на страницы в laravel, используя метод paginate(). Кроме того, создайте разбиение на страницы laravel livewire, разбиение на страницы с помощью бутстрапа.
Мы создадим простую пагинацию jquery. Кроме того, создайте разбиение на страницы с помощью jquery без плагина и создайте разбивку на страницы jquery с помощью кнопок «Далее» и «Предыдущий».
Итак, давайте посмотрим динамическую нумерацию страниц в jquery и бутстраповскую нумерацию страниц в jquery.
Пример:
В этом примере мы создадим пагинацию с помощью jquery без использования плагина. Кроме того, вы можете настроить пагинацию.
<!DOCTYPE html>
<html lang="en">
<head>
<title>How To Create Pagination Using jQuery - Websolutionstuff</title>
<style>
.current {
color: green;
}
#pagin li {
display: inline-block;
font-weight: 500;
}
.prev {
cursor: pointer;
}
.next {
cursor: pointer;
}
.last {
cursor:pointer;
margin-left:10px;
}
.first {
cursor:pointer;
margin-right:10px;
}
.line-content, #pagin, h3 {
text-align:center;
}
.line-content {
margin-top:20px;
}
#pagin {
margin-top:10px;
padding-left:0;
}
h3 {
margin:50px 0;
}
</style>
</head>
<body>
<h3>How To Create Pagination Using jQuery - Websolutionstuff</h3>
<div class="line-content">This is Page 1 content example with next and prev.</div>
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<ul id="pagin"></ul>
</body>
</html>
<script src="https://code.jquery.com/jquery-3.6.1.min.js" integrity="sha256-o88AwQnZB+VDvE9tvIXrMQaPlFFSUTR+nldQm1LuPXQ=" crossorigin="anonymous"></script>
<script>
pageSize = 5;
incremSlide = 5;
startPage = 0;
numberPage = 0;
var pageCount = $(".line-content").length / pageSize;
var totalSlidepPage = Math.floor(pageCount / incremSlide);
for(var i = 0 ; i<pageCount;i++){
$("#pagin").append('<li><a href="#">'+(i+1)+'</a></li> ');
if(i>pageSize){
$("#pagin li").eq(i).hide();
}
}
var prev = $("<li/>").addClass("prev").html("Prev").click(function(){
startPage-=5;
incremSlide-=5;
numberPage--;
slide();
});
prev.hide();
var next = $("<li/>").addClass("next").html("Next").click(function(){
startPage+=5;
incremSlide+=5;
numberPage++;
slide();
});
$("#pagin").prepend(prev).append(next);
$("#pagin li").first().find("a").addClass("current");
slide = function(sens){
$("#pagin li").hide();
for(t=startPage;t<incremSlide;t++){
$("#pagin li").eq(t+1).show();
}
if(startPage == 0){
next.show();
prev.hide();
}else if(numberPage == totalSlidepPage ){
next.hide();
prev.show();
}else{
next.show();
prev.show();
}
}
showPage = function(page) {
$(".line-content").hide();
$(".line-content").each(function(n) {
if (n >= pageSize * (page - 1) && n < pageSize * page){
$(this).show();
}
});
}
showPage(1);
$("#pagin li a").eq(0).addClass("current");
$("#pagin li a").click(function() {
$("#pagin li a").removeClass("current");
$(this).addClass("current");
showPage(parseInt($(this).text()));
});
</script>Выход:
Пример:
В этом примере мы создадим загрузочную пагинацию с помощью jquery.
<!DOCTYPE html>
<html lang="en">
<head>
<title>How To Create Bootstrap Pagination Using jQuery - Websolutionstuff</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">
<style>
#data tr {
display: none;
}
.page {
margin: 30px;
}
table, th, td {
border: 1px solid black;
}
#data {
font-family: Arial, Helvetica, sans-serif;
border-collapse: collapse;
width: 100%;
}
#data td, #data th {
border: 1px solid #ddd;
padding: 8px;
}
#data tr:nth-child(even) {
background-color: #f2f2f2;
}
#data tr:hover {
background-color: #ddd;
}
#data th {
padding-top: 12px;
padding-bottom: 12px;
text-align: left;
background-color: #03aa96;
color: white;
}
#nav a {
color: #03aa96;
font-size: 20px;
margin-top: 22px;
font-weight: 600;
}
a:hover, a:visited, a:link, a:active {
text-decoration: none;
}
#nav {
margin-top: 20px;
}
</style>
</head>
<body>
<h2 align="center" class="mt-4">How To Create Bootstrap Pagination Using jQuery - Websolutionstuff</h2>
<div class="page" align="center">
<table id="data">
<tr>
<th>Id</th>
<th>Name</th>
<th>Country</th>
</tr>
<tr>
<td>1</td>
<td>Maria</td>
<td>Germany</td>
</tr>
<tr>
<td>2</td>
<td>Christina</td>
<td>Sweden</td>
</tr>
<tr>
<td>3</td>
<td>Chang</td>
<td>Mexico</td>
</tr>
<tr>
<td>4</td>
<td>Mendel</td>
<td>Austria</td>
</tr>
<tr>
<td>5</td>
<td>Helen</td>
<td>United Kingdom</td>
</tr>
<tr>
<td>6</td>
<td>Philip</td>
<td>Germany</td>
</tr>
<tr>
<td>7</td>
<td>Tannamuri</td>
<td>Canada</td>
</tr>
<tr>
<td>8</td>
<td>Rovelli</td>
<td>Italy</td>
</tr>
<tr>
<td>9</td>
<td>Dell</td>
<td>United Kingdom</td>
</tr>
<tr>
<td>10</td>
<td>Trump</td>
<td>France</td>
</tr>
</table>
</div>
</body>
</html>
<script src="https://code.jquery.com/jquery-3.6.1.min.js" integrity="sha256-o88AwQnZB+VDvE9tvIXrMQaPlFFSUTR+nldQm1LuPXQ=" crossorigin="anonymous"></script>
<script>
$(document).ready (function () {
$('#data').after ('<div id="nav"></div>');
var rowsShown = 5;
var rowsTotal = $('#data tbody tr').length;
var numPages = rowsTotal/rowsShown;
for (i = 0;i < numPages;i++) {
var pageNum = i + 1;
$('#nav').append ('<a href="#" rel="'+i+'">'+pageNum+'</a> ');
}
$('#data tbody tr').hide();
$('#data tbody tr').slice (0, rowsShown).show();
$('#nav a:first').addClass('active');
$('#nav a').bind('click', function() {
$('#nav a').removeClass('active');
$(this).addClass('active');
var currPage = $(this).attr('rel');
var startItem = currPage * rowsShown;
var endItem = startItem + rowsShown;
$('#data tbody tr').css('opacity','0.0').hide().slice(startItem, endItem).
css('display','table-row').animate({opacity:1}, 300);
});
});
</script>Выход:
Пример:
В этом примере мы создадим пагинацию с помощью плагина twbsPagination . Этот плагин jQuery упрощает использование разбиения на страницы Bootstrap.
<!DOCTYPE html>
<html lang="en">
<head>
<title>jQuery Pagination Using Plugin - Websolutionstuff</title>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha.6/css/bootstrap.min.css">
<style>
.wrapper{
margin: 60px auto;
text-align: center;
}
h2{
margin-bottom: 1.25em;
}
#pagination-demo{
display: inline-block;
margin-bottom: 1.75em;
}
#pagination-demo li{
display: inline-block;
}
.page-content{
background: #eee;
display: inline-block;
padding: 10px;
width: 100%;
max-width: 660px;
}
</style>
</head>
<body>
<div class="wrapper">
<div class="container">
<div class="row">
<div class="col-sm-12">
<h2>jQuery Pagination Using Plugin - Websolutionstuff</h2>
<p>Simple pagination using the TWBS pagination JS library.</p>
<ul id="pagination-demo" class="pagination-sm"></ul>
</div>
</div>
<div id="page-content" class="page-content">Page 1</div>
</div>
</div>
</body>
</html>
<script src="https://code.jquery.com/jquery-3.6.1.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha.6/js/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twbs-pagination/1.4.1/jquery.twbsPagination.min.js"></script>
<script>
$(document).ready (function () {
$('#pagination-demo').twbsPagination({
totalPages: 16,
visiblePages: 6,
next: 'Next',
prev: 'Prev',
onPageClick: function (event, page) {
$('#page-content').text('Page ' + page) + ' content here';
}
});
});
</script>Выход:
Оригинальный источник статьи: https://websolutionstuff.com/
1685213040
使用 jQuery 创建分页
在本文中，我们将看到如何使用 jquery 创建分页。我们将使用多种方式创建 jquery 分页。您可以使用不同的方式创建分页，例如使用简单的 HTML 创建分页，您可以使用 paginate() 方法在 laravel 中创建分页。另外，创建分页 laravel livewire，使用 bootstrap 进行分页。
我们将创建简单的 jquery 分页。此外，使用不带插件的 jquery 创建分页，并使用下一个和上一个按钮创建 jquery 分页
那么，让我们看看jquery中的动态分页和jquery中的bootstrap分页
例子：
在这个例子中，我们将使用 jquery 创建分页而不使用插件。此外，您可以自定义分页。
<!DOCTYPE html>
<html lang="en">
<head>
<title>How To Create Pagination Using jQuery - Websolutionstuff</title>
<style>
.current {
color: green;
}
#pagin li {
display: inline-block;
font-weight: 500;
}
.prev {
cursor: pointer;
}
.next {
cursor: pointer;
}
.last {
cursor:pointer;
margin-left:10px;
}
.first {
cursor:pointer;
margin-right:10px;
}
.line-content, #pagin, h3 {
text-align:center;
}
.line-content {
margin-top:20px;
}
#pagin {
margin-top:10px;
padding-left:0;
}
h3 {
margin:50px 0;
}
</style>
</head>
<body>
<h3>How To Create Pagination Using jQuery - Websolutionstuff</h3>
<div class="line-content">This is Page 1 content example with next and prev.</div>
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<ul id="pagin"></ul>
</body>
</html>
<script src="https://code.jquery.com/jquery-3.6.1.min.js" integrity="sha256-o88AwQnZB+VDvE9tvIXrMQaPlFFSUTR+nldQm1LuPXQ=" crossorigin="anonymous"></script>
<script>
pageSize = 5;
incremSlide = 5;
startPage = 0;
numberPage = 0;
var pageCount = $(".line-content").length / pageSize;
var totalSlidepPage = Math.floor(pageCount / incremSlide);
for(var i = 0 ; i<pageCount;i++){
$("#pagin").append('<li><a href="#">'+(i+1)+'</a></li> ');
if(i>pageSize){
$("#pagin li").eq(i).hide();
}
}
var prev = $("<li/>").addClass("prev").html("Prev").click(function(){
startPage-=5;
incremSlide-=5;
numberPage--;
slide();
});
prev.hide();
var next = $("<li/>").addClass("next").html("Next").click(function(){
startPage+=5;
incremSlide+=5;
numberPage++;
slide();
});
$("#pagin").prepend(prev).append(next);
$("#pagin li").first().find("a").addClass("current");
slide = function(sens){
$("#pagin li").hide();
for(t=startPage;t<incremSlide;t++){
$("#pagin li").eq(t+1).show();
}
if(startPage == 0){
next.show();
prev.hide();
}else if(numberPage == totalSlidepPage ){
next.hide();
prev.show();
}else{
next.show();
prev.show();
}
}
showPage = function(page) {
$(".line-content").hide();
$(".line-content").each(function(n) {
if (n >= pageSize * (page - 1) && n < pageSize * page){
$(this).show();
}
});
}
showPage(1);
$("#pagin li a").eq(0).addClass("current");
$("#pagin li a").click(function() {
$("#pagin li a").removeClass("current");
$(this).addClass("current");
showPage(parseInt($(this).text()));
});
</script>输出：
例子：
在这个例子中，我们将在 jquery 的帮助下创建引导分页。
<!DOCTYPE html>
<html lang="en">
<head>
<title>How To Create Bootstrap Pagination Using jQuery - Websolutionstuff</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">
<style>
#data tr {
display: none;
}
.page {
margin: 30px;
}
table, th, td {
border: 1px solid black;
}
#data {
font-family: Arial, Helvetica, sans-serif;
border-collapse: collapse;
width: 100%;
}
#data td, #data th {
border: 1px solid #ddd;
padding: 8px;
}
#data tr:nth-child(even) {
background-color: #f2f2f2;
}
#data tr:hover {
background-color: #ddd;
}
#data th {
padding-top: 12px;
padding-bottom: 12px;
text-align: left;
background-color: #03aa96;
color: white;
}
#nav a {
color: #03aa96;
font-size: 20px;
margin-top: 22px;
font-weight: 600;
}
a:hover, a:visited, a:link, a:active {
text-decoration: none;
}
#nav {
margin-top: 20px;
}
</style>
</head>
<body>
<h2 align="center" class="mt-4">How To Create Bootstrap Pagination Using jQuery - Websolutionstuff</h2>
<div class="page" align="center">
<table id="data">
<tr>
<th>Id</th>
<th>Name</th>
<th>Country</th>
</tr>
<tr>
<td>1</td>
<td>Maria</td>
<td>Germany</td>
</tr>
<tr>
<td>2</td>
<td>Christina</td>
<td>Sweden</td>
</tr>
<tr>
<td>3</td>
<td>Chang</td>
<td>Mexico</td>
</tr>
<tr>
<td>4</td>
<td>Mendel</td>
<td>Austria</td>
</tr>
<tr>
<td>5</td>
<td>Helen</td>
<td>United Kingdom</td>
</tr>
<tr>
<td>6</td>
<td>Philip</td>
<td>Germany</td>
</tr>
<tr>
<td>7</td>
<td>Tannamuri</td>
<td>Canada</td>
</tr>
<tr>
<td>8</td>
<td>Rovelli</td>
<td>Italy</td>
</tr>
<tr>
<td>9</td>
<td>Dell</td>
<td>United Kingdom</td>
</tr>
<tr>
<td>10</td>
<td>Trump</td>
<td>France</td>
</tr>
</table>
</div>
</body>
</html>
<script src="https://code.jquery.com/jquery-3.6.1.min.js" integrity="sha256-o88AwQnZB+VDvE9tvIXrMQaPlFFSUTR+nldQm1LuPXQ=" crossorigin="anonymous"></script>
<script>
$(document).ready (function () {
$('#data').after ('<div id="nav"></div>');
var rowsShown = 5;
var rowsTotal = $('#data tbody tr').length;
var numPages = rowsTotal/rowsShown;
for (i = 0;i < numPages;i++) {
var pageNum = i + 1;
$('#nav').append ('<a href="#" rel="'+i+'">'+pageNum+'</a> ');
}
$('#data tbody tr').hide();
$('#data tbody tr').slice (0, rowsShown).show();
$('#nav a:first').addClass('active');
$('#nav a').bind('click', function() {
$('#nav a').removeClass('active');
$(this).addClass('active');
var currPage = $(this).attr('rel');
var startItem = currPage * rowsShown;
var endItem = startItem + rowsShown;
$('#data tbody tr').css('opacity','0.0').hide().slice(startItem, endItem).
css('display','table-row').animate({opacity:1}, 300);
});
});
</script>输出：
例子：
在此示例中，我们将使用twbsPagination插件创建分页。这个 jQuery 插件简化了 Bootstrap 分页的使用。
<!DOCTYPE html>
<html lang="en">
<head>
<title>jQuery Pagination Using Plugin - Websolutionstuff</title>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha.6/css/bootstrap.min.css">
<style>
.wrapper{
margin: 60px auto;
text-align: center;
}
h2{
margin-bottom: 1.25em;
}
#pagination-demo{
display: inline-block;
margin-bottom: 1.75em;
}
#pagination-demo li{
display: inline-block;
}
.page-content{
background: #eee;
display: inline-block;
padding: 10px;
width: 100%;
max-width: 660px;
}
</style>
</head>
<body>
<div class="wrapper">
<div class="container">
<div class="row">
<div class="col-sm-12">
<h2>jQuery Pagination Using Plugin - Websolutionstuff</h2>
<p>Simple pagination using the TWBS pagination JS library.</p>
<ul id="pagination-demo" class="pagination-sm"></ul>
</div>
</div>
<div id="page-content" class="page-content">Page 1</div>
</div>
</div>
</body>
</html>
<script src="https://code.jquery.com/jquery-3.6.1.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha.6/js/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twbs-pagination/1.4.1/jquery.twbsPagination.min.js"></script>
<script>
$(document).ready (function () {
$('#pagination-demo').twbsPagination({
totalPages: 16,
visiblePages: 6,
next: 'Next',
prev: 'Prev',
onPageClick: function (event, page) {
$('#page-content').text('Page ' + page) + ' content here';
}
});
});
</script>输出：
原文出处：https: //websolutionstuff.com/
1577456285
How to Implement AES Encrypt and Decrypt Data in Angular 8
Introduction
In this article, You’ll learn how to implement AES encryption and decryption in Angular 8 while developing an application.
Concepts
The AES is the advanced encryption standard. So, these algorithms have been the standard of encryption for organizations like the NSA and anyone else that wants to hide their data. So, it’s a critical part of the computer science curriculum. that you should understand if you’re a software developer.
Actually, DES and AES were both developed to solve the same problem in 1971. this algorithm was invented by two Belgian cryptographers, Vincent Rijmen and Joan Daemen. IBM was the inventor of this algorithm called DES. it gradually became insecure and crackable as computer software or as computer hardware.
In the late 1990s, the government the NSA, in particular, decided that they needed to have an improved algorithm. so they put open a worldwide search and took ideas from fifteen different groups. then they create something that has been a standard for now over 20 years so these algorithms are known as symmetric ciphers.
You would have a single password or key that would encrypt your document and then that same key is going to unlock the document. so that key is important the alternative to symmetric encryption is called asymmetric encryption.
When to use AES Encryption
1. If you want to encrypt confidential data into a decryptable format, for example – if you need to send some sensitive data via e-mail.
2. The decryption of the encrypted data is possible only when you know the right password.
Now, It is very easy to implement the AES encryption and decryption in Angular 8 with the help of crypto-js.
Let’s, create a new project with the below command.
ng new EncryptionDescryptionSample
After that, we need to install a crypto.js file, by the below command.
npm install crypto-js --save
For better responsive UI, we also install bootstrap by the below command.
npm install bootstrap --save
Now, Let’s go an open “app.component.html” file and replace the existing code with the following code.
<h1 class="text-center">Encrypt-Decrypt with AES</h1>
<br>
<div>
<div class="row">
<div class="col-sm-6">
<button type="button" class="btn btn-primary btn-lg btn-block">
Encryption
</button>
<br>
<div class="form-group">
<label for="txtTextToConvert">Plain Text</label>
<input type="text" class="form-control" placeholder="Enter text you want to encrypt" [(ngModel)]="plainText">
</div>
<div class="form-group">
<label for="txtPassword">Password</label>
<input type="password" class="form-control" placeholder="Enter encryption password" [(ngModel)]="encPassword">
</div>
<textarea class="form-control" readonly rows="3">{{conversionEncryptOutput}}</textarea>
<br>
<button type="button" class="btn btn-success float-right" (click)="convertText('encrypt')">Encrypt</button>
</div>
<div class="col-sm-6">
<button type="button" class="btn btn-dark btn-lg btn-block">
Decryption
</button>
<br>
<div class="form-group">
<label for="txtTextToConvert">Encrypted Text</label>
<input type="text" class="form-control" placeholder="Enter text you want to decrypt" [(ngModel)]="encryptText">
</div>
<div class="form-group">
<label for="txtPassword">Password</label>
<input type="password" class="form-control" placeholder="Enter decryption password" [(ngModel)]="decPassword">
</div>
<textarea class="form-control" readonly rows="3">{{conversionDecryptOutput}}</textarea>
<br>
<button type="button" class="btn btn-success float-right" (click)="convertText('decrypt')">Decrypt</button>
</div>
</div>
</div>
After that, open “app.component.ts” file and write the following code, we used the Encrypt method of AES and passed our plain text with a password to encrypt the string. then Similarly, we used the Decrypt method of AES and passed our encrypted text with a password to decrypt the string. Be assured that both times, your password we’ll be the same. so, using both of these methods, you just need to import “CryptoJS” from crypto-js libraries.
import { Component } from '@angular/core';
import * as CryptoJS from 'crypto-js';
@Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent {
title = 'EncryptionDecryptionSample';
plainText:string;
encryptText: string;
encPassword: string;
decPassword:string;
conversionEncryptOutput: string;
conversionDecryptOutput:string;
constructor() {
}
//method is used to encrypt and decrypt the text
convertText(conversion:string) {
if (conversion=="encrypt") {
this.conversionEncryptOutput = CryptoJS.AES.encrypt(this.plainText.trim(), this.encPassword.trim()).toString();
}
else {
this.conversionDecryptOutput = CryptoJS.AES.decrypt(this.encryptText.trim(), this.decPassword.trim()).toString(CryptoJS.enc.Utf8);
}
}
}
Now, Run the project by using the below command.
ng serve --o
Here is the output.
I hope this tutorial will surely help and you if you liked this tutorial, please consider sharing it with others. Thank you !
#Angular #Angular8 #AES #Cryptojs #angular