我正在尝试转换处理与页面上的选项卡相关的事件的 JavaScript 代码，即每当用户单击特定选项卡时，其下方就会出现红色边框(就像 Netflix 登陆页面网站的工作方式一样)。但是，当我在登陆页面组件 typescript 文件中粘贴相同的代码时，出现错误。我提供了 landing.component.html、landing.component.css、landing.component.ts 和我想要转换的 javascript 文件(main.js)。
landing.component.html
<header class="showcase">
<div class="showcase-top">
<img src="../../assets/logo.png" alt="Netflix">
<a href="#" class="btn btn-rounded">Sign In</a>
</div>
<div class="showcase-content">
<h1>See what's next</h1>
<p>Watch anywhere. Cancel anytime</p>
<a href="#" class="btn btn-xl">
Watch Free for 30 Days <i class="fas fa-chevron-right btn-icon"></i>
</a>
</div>
</header>
<section class="tabs">
<div class="container-fluid">
<div id="tab-1" class="tab-item tab-border">
<i class="fas fa-door-open fa-3x"></i>
<p class="hide-sm">Cancel Anytime</p>
</div>
<div id="tab-2" class="tab-item">
<i class="fas fa-tablet-alt fa-3x"></i>
<p class="hide-sm">Watch Anywhere</p>
</div>
<div id="tab-3" class="tab-item">
<i class="fas fa-tags fa-3x"></i>
<p class="hide-sm">Pick your price</p>
</div>
</div>
</section>
<section class="tab-content">
<div class="container-fluid">
<!-- Tab 1 Content -->
<div id="tab-1-content" class="tab-content-item show">
<div class="tab-1-content-inner">
<div>
<p class="text-lg">
If you decide Netflix isn't for you- no problem.
</p>
<a href="#" class="btn btn-lg">Watch Free For 30 Days</a>
</div>
<img src="../../assets/tab-content-1.png" alt="">
</div>
</div>
<!-- Tab 2 Content -->
<div id="tab-2-content" class="tab-content-item">
<div class="tab-2-content-top">
<p class="text-lg">
If you decide Netflix isn't for you.
</p>
<a href="#" class="btn btn-lg">Watch Free For 30 Days</a>
</div>
<div class="tab-2-content-bottom">
<div>
<img src="../../assets/tab-content-2-1.png" alt="">
<p class="text-md">Watch on your TV</p>
<p class="text-dark">Smart TVs, PlayStation, Xbox, Chromecast, Apple TV, Blu-ray players and more.</p>
</div>
<div>
<img src="../../assets/tab-content-2-2.png" alt="">
<p class="text-md">Watch instantly or download for later</p>
<p class="text-dark">Available on phone and tablet, wherever you go.</p>
</div>
<div>
<img src="../../assets/tab-content-2-3.png" alt="">
<p class="text-md">Use any computer</p>
<p class="text-dark">Watch right on Netflix.com</p>
</div>
</div>
</div>
<!-- Tab 3 Content -->
<div id="tab-3-content" class="tab-content-item">
<div class="text-center">
<p class="text-lg">Choose one plan and watch everything on Netflix</p>
<a href="#" class="btn btn-lg">Watch Free For 30 Days</a>
</div>
<table class="table">
<thead>
<tr>
<th></th>
<th>Basic</th>
<th>Standard</th>
<th>Premium</th>
</tr>
</thead>
<tbody>
<tr>
<td>Monthly price after free month ends on 6/19/20</td>
<td>$8.99</td>
<td>$12.99</td>
<td>$15.99</td>
</tr>
<tr>
<td>HD Available</td>
<td><i class="fas fa-times"></i></td>
<td><i class="fas fa-check"></i></td>
<td><i class="fas fa-check"></i></td>
</tr>
<tr>
<td>Ultra HD Available</td>
<td><i class="fas fa-times"></i></td>
<td><i class="fas fa-times"></i></td>
<td><i class="fas fa-check"></i></td>
</tr>
<tr>
<td>Screens you can watch on at the same time</td>
<td>1</td>
<td>2</td>
<td>4</td>
</tr>
<tr>
<td>Watch on your laptop, TV, phone and tablet</td>
<td><i class="fas fa-check"></i></td>
<td><i class="fas fa-check"></i></td>
<td><i class="fas fa-check"></i></td>
</tr>
<tr>
<td>Unlimited movies and TV shows</td>
<td><i class="fas fa-check"></i></td>
<td><i class="fas fa-check"></i></td>
<td><i class="fas fa-check"></i></td>
</tr>
<tr>
<td>Cancel anytime</td>
<td><i class="fas fa-check"></i></td>
<td><i class="fas fa-check"></i></td>
<td><i class="fas fa-check"></i></td>
</tr>
<tr>
<td>First month free</td>
<td><i class="fas fa-check"></i></td>
<td><i class="fas fa-check"></i></td>
<td><i class="fas fa-check"></i></td>
</tr>
</tbody>
</table>
</div>
</div>
</section>
<footer class="footer">
<p>Questions? Call 1-866-576-7172</p>
<div class="footer-cols">
<ul>
<li><a href="#">FAQ</a></li>
<li><a href="#">Investor Relations</a></li>
<li><a href="#">Ways To Watch</a></li>
<li><a href="#">Corporate Information</a></li>
<li><a href="#">Netflix Originals</a></li>
</ul>
<ul>
<li><a href="#">Help Center</a></li>
<li><a href="#">Jobs</a></li>
<li><a href="#">Terms Of Use</a></li>
<li><a href="#">Contact Us</a></li>
</ul>
<ul>
<li><a href="#">Account</a></li>
<li><a href="#">Redeem Gift Cards</a></li>
<li><a href="#">Privacy</a></li>
<li><a href="#">Speed Test</a></li>
</ul>
<ul>
<li><a href="#">Media Center</a></li>
<li><a href="#">Buy Gift Cards</a></li>
<li><a href="#">Cookie Preferences</a></li>
<li><a href="#">Legal Notices</a></li>
</ul>
</div>
</footer>
正在加载.component.css
.showcase{
width: 100% !important;
height: 93vh !important;
position: relative !important;
background: url('../../assets/background.jpg') no-repeat center center/cover !important;
}
.showcase::after{
content: '' !important;
position: absolute !important;
top: 0 !important;
left: 0 !important;
width: 100% !important;
height: 100% !important;
z-index: 1 !important;
background: rgba(0,0,0,0.6) !important;
box-shadow: inset 120px 100px 250px #000000, inset -120px -100px 250px #000000 !important;
}
.showcase-top{
position: relative !important;
z-index: 2 !important;
height: 90px !important;
}
.showcase-top img{
width: 170px !important;
position: absolute !important;
top: 50% !important;
left: 50% !important;
transform: translate(-50%, -50%) !important;
}
.showcase-top a{
position: absolute !important;
top: 50% !important;
right: 0 !important;
transform: translate(-50%, -50%) !important;
}
.showcase-content{
position: relative !important;
z-index: 2 !important;
margin: auto !important;
display: flex !important;
flex-direction: column !important;
justify-content: center !important;
align-items: center !important;
text-align: center !important;
margin-top: 9rem !important;
}
.showcase-content h1{
font-weight: 700 !important;
font-size: 5.2rem !important;
line-height: 1.1 !important;
margin: 0 0 2rem !important;
}
.showcase-content p{
text-transform: uppercase !important;
color: #fff !important;
font-weight: 400 !important;
font-size: 1.9rem !important;
line-height: 1.25 !important;
margin: 0 0 2rem !important;
}
/* Tabs */
.tabs{
background: var(--dark-color) !important;
padding-top: 1rem !important;
border-bottom: 3px solid #3d3d3d !important;
}
.tabs .container-fluid{
display: grid !important;
grid-template-columns: repeat(3, 1fr) !important;
grid-gap: 1rem !important;
align-items: center !important;
justify-content: center !important;
text-align: center !important;
}
.tabs p{
font-size: 1.2rem !important;
padding-top: 0.5rem !important;
}
.tabs .container-fluid > div{
padding: 1.5rem 0 !important;
}
.tabs .container-fluid > div:hover{
color: #fff !important;
cursor: pointer !important;
}
.tab-border{
border-bottom: var(--primary-color) 4px solid !important;
}
/* Tab Content */
.tab-content{
padding: 3rem 0 !important;
background: #000 !important;
color: #fff !important;
}
/* Hide Content Initially */
#tab-1-content,
#tab-2-content,
#tab-3-content{
display: none !important;
}
.tab-content-item .show{
display: block !important;
}
#tab-1-content .tab-1-content-inner{
display: grid !important;
grid-template-columns: repeat(2, 1fr) !important;
grid-gap: 2rem !important;
align-items: center !important;
justify-content: center !important;
}
#tab-2-content .tab-2-content-top{
display: grid !important;
grid-template-columns: 2fr 1fr !important;
grid-gap: 1rem !important;
justify-content: center !important;
align-items: center !important;
}
#tab-2-content .tab-2-content-bottom{
margin-top: 2rem !important;
display: grid !important;
grid-template-columns: repeat(3, 1fr) !important;
grid-gap: 2rem !important;
justify-content: center !important;
align-items: center !important;
text-align: center !important;
}
.table{
width: 100% !important;
margin-top: 2rem !important;
border-collapse: collapse !important;
border-spacing: 0 !important;
}
.table thead th{
text-transform: uppercase !important;
padding: 0.8rem !important;
color: #fff !important;
border: none !important;
}
.table tbody tr td{
color: #999 !important;
padding: 0.8rem 1.2rem !important;
text-align: center !important;
border: none !important;
}
.table tbody tr td:first-child{
text-align: left !important;
}
.table tbody tr:nth-child(odd){
background: #222 !important;
}
/* Footer */
.footer{
max-width: 75% !important;
margin: 1rem auto !important;
overflow: auto !important;
}
.footer, .footer a{
color: #999 !important;
font-size: 0.9rem !important;
}
.footer p{
margin-bottom: 1.5rem !important;
}
.footer .footer-cols{
display: grid !important;
grid-template-columns: repeat(4, 1fr) !important;
grid-gap: 2rem !important;
}
.footer li{
line-height: 1.9 !important;
}
/* Container */
.container-fluid{
max-width: 70% !important;
margin: auto !important;
overflow: hidden !important;
padding: 0 2rem !important;
}
/* Text Styles */
.text-xl{
font-size: 2rem !important;
margin-bottom: 1rem !important;
}
.text-lg{
font-size: 1.8rem !important;
margin-bottom: 1rem !important;
}
.text-md{
font-size: 1.5rem !important;
margin-bottom: 1rem !important;
}
.text-center{
text-align: center !important;
}
.text-dark{
color: #999 !important;
}
/* Buttons */
.btn{
display: inline-block !important;
background: var(--primary-color) !important;
color: #fff !important;
padding: 0.4rem 1.3rem !important;
font-size: 1rem !important;
text-align: center !important;
border: none !important;
cursor: pointer !important;
margin-right: 0.5rem !important;
outline: none !important;
box-shadow: 0 1px 0 rgba(0,0,0,0.45) !important;
border-radius: 2px !important;
}
.btn:hover{
opacity: 0.9 !important;
}
.btn-rounded{
border-radius: 5px !important;
}
.btn-xl{
font-size: 2rem !important;
padding: 1.5rem 2.1rem !important;
text-transform: uppercase !important;
}
.btn-lg{
font-size: 1rem !important;
padding: 0.8rem 1.3rem !important;
text-transform: uppercase !important;
}
@media(max-width: 960px){
.showcase{
height: 70vh !important;
}
.hide-sm{
display: none !important;
}
.showcase-top img{
top: 30% !important;
left: 5% !important;
transform: translate(0) !important;
}
.showcase-content h1{
font-size: 3.7rem !important;
line-height: 1 !important;
}
.showcase-content p{
font-size: 1.5rem !important;
}
.footer .footer-cols{
grid-template-columns: repeat(2, 1fr) !important;
}
.btn-xl{
font-size: 1.5rem !important;
padding: 1.4rem 2rem !important;
}
.text-xl{
font-size: 1.5rem !important;
}
.text-lg{
font-size: 1.3rem !important;
}
.text-md{
font-size: 1rem !important;
}
}
@media(max-width: 700px){
.showcase::after{
box-shadow: inset 80px 80px 250px #000000, inset -80px -80px 250px #000000 !important;
}
#tab-1-content .tab-1-content-inner{
grid-template-columns: 1fr !important;
text-align: center !important;
}
#tab-2-content .tab-2-content-top{
display: block !important;
text-align: center !important;
}
#tab-2-content .tab-2-content-bottom{
grid-template-columns: 1fr !important;
}
}
landing.component.ts(我在此文件中收到错误)
import { Component, OnInit } from '@angular/core';
const tabItems = document.querySelectorAll('.tab-item');
const tabContentItems = document.querySelectorAll('.tab-content-item');
@Component({
selector: 'app-landing',
templateUrl: './landing.component.html',
styleUrls: ['./landing.component.css']
})
export class LandingComponent implements OnInit {
constructor() {}
ngOnInit() {}
// Select tab content item
function selectItem(){
removeBorder();
// Add border to current tab
this.classList.add('tab-border');
}
function removeBorder(){
tabItems.forEach(item => item.classList.remove('tab-border'));
}
// Listen for tab click
tabItems.forEach(item => item.addEventListener('click', selectItem));
}
main.js(这是我想要在landing.component.ts中添加的代码)
const tabItems = document.querySelectorAll('.tab-item');
const tabContentItems = document.querySelectorAll('.tab-content-item');
// Select tab content item
function selectItem(e){
removeBorder();
// Add border to current tab
this.classList.add('tab-border');
}
function removeBorder(){
tabItems.forEach(item => item.classList.remove('tab-border'));
}
// Listen for tab click
tabItems.forEach(item => item.addEventListener('click', selectItem));
附注我一直在遵循一系列教程来做到这一点。链接为:Build a Netflix Landing Page Clone with HTML, CSS & JS
本教程的源代码位于链接:Source Code
请建议在 typescript 文件中进行更正
最佳答案
你需要使用 Angular 可能性，
看看我是怎么做到的 your landing in angular
我做了什么:
在 app.component.ts 中添加 tabs 数组、变量 activeTabId 和函数 selectTab():
tabs = [
{id: 1, title: 'Cancel at any time'},
{id: 2, title: 'Watch anywhere'},
{id: 3, title: 'Pick your price'}
];
activeTabId = this.tabs[0].id;
selectTab(tab) {
this.activeTabId = tab.id;
}
并更改模板(HTML)，动态添加选项卡数组，并动态添加类、id。
<section class="tabs">
<div class="container">
<div class="tab-item" *ngFor="let tab of tabs;" [attr.id]="'tab-'+tab?.id"
[ngClass]="{'tab-border': activeTabId === tab?.id}" (click)="selectTab(tab)">
<i class="fas fa-door-open fa-3x"></i>
<p class="hide-sm">Cancel at any time</p>
</div>
<!--
<div id="tab-2" class="tab-item">
<i class="fas fa-tablet-alt fa-3x"></i>
<p class="hide-sm">Watch anywhere</p>
</div>
<div id="tab-3" class="tab-item">
<i class="fas fa-tags fa-3x"></i>
<p class="hide-sm">Pick your price</p>
</div>
-->
</div>
当点击 selectTab() 时，在模板中使用 NgSwitch，在选项卡之间切换:
<ng-container [ngSwitch]="activeTabId">
<div *ngSwitchCase="1" id="tab-1-content">...</div>
<div *ngSwitchCase="2" id="tab-2-content">...</div>
<div *ngSwitchCase="3" id="tab-3-content">...</div>
</ng-container>
以及代码链接stackblitz.com
关于javascript - 如何将普通的 javascript 代码转换为使用事件处理的 Angular 组件特定代码，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/59979048/