我是React的新手和一般的编码。我正在尝试在同一个组件中渲染多个模态,但它们都是同时渲染的,所以看起来所有链接都在最后一个模态中渲染文本。
这是国家的设定地点:
class Header extends React.Component {
constructor () {
super();
this.state = {open:false}
this.openModal = this.openModal.bind(this);
this.closeModal = this.closeModal.bind(this);
this.handleModalChangeEnter = this.handleModalChange.bind(this, true);
this.handleModalChangeLogin = this.handleModalChange.bind(this, false);
}
openModal () {
this.setState({open: true}); }
closeModal () {
this.setState({open: false}); }
render() {
这是模态结构:
return (
<header style={home}>
<div style={hello}>
<img style={logo} src='public/ycHEAD.png'/>
<p style={slogan}>One Calendar for All of Yerevan's Tech Events</p>
</div>
<div style={subContainer}>
<ul style={modalDirectory}>
<Button onClick={this.openModal}
style={openButton}>
<li><a style={tabs}>Enter
</a></li>
</button>
<Modal style={modalCont}
isOpen={this.state.open}>
<button onClick={this.closeModal}
style={xButton}>x</button>
</Modal>
<button onClick={this.openModal}
style={openButton}>
<li><a style={tabs}>Login
</a></li>
</button>
<Modal style={modalCont}
isOpen={this.state.open}>
<p>Account</p>
<button onClick={this.closeModal}
style={xButton}>x</button>
</Modal>
空括号中是否有值 - &gt; openModal()&amp; closeModal()?
答案 0 :(得分:0)
一位朋友帮我解决了这个问题。代码的上半部分保持不变,模态构造发生了哪些变化(对'html'也有一些非常有用的美学变化):
return (
<header style={home}>
<div style={hello}>
<img style={logo} src='public/ycHEAD.png'/>
<p style={slogan}>One Calendar for All of Yerevan's Tech Events</p>
</div>
<div style={subContainer}>
<ul style={modalDirectory}>
<li style={tabs}>
<button
onClick={() => this.openModal('login')}
style={openButton}>
Enter
</button>
</li>
<li style={tabs}>
<button
onClick={() => this.openModal('calendar')}
style={openButton}>
Calendar
</button>
</li>
<li style={tabs}>
<button
onClick={() => this.openModal('team')}
style={openButton}>
Meet Us
</button>
</li>
</ul>
</div>
<Modal
style={modalCont}
isOpen={this.state.activeModal === 'login'}>
<p>1!</p>
<button onClick={this.closeModal}
style={xButton}>x</button>
</Modal>
<Modal
style={modalCont}
isOpen={this.state.activeModal === 'calendar'}>
<p>2!</p>
<button onClick={this.closeModal}
style={xButton}>x</button>
</Modal>
<Modal
style={modalCont}
isOpen={this.state.activeModal === 'team'}>
<p>3!</p>
<button onClick={this.closeModal}
style={xButton}>x</button>
</Modal>
</header>
如果其他人可以提供详尽的解释,请这样做!另外,还有另一种使用'bind'的方法,但我不知道如何。
答案 1 :(得分:-1)
您可以通过两种方式进行操作。
1)简单但无法扩展:为每个模式维护不同的状态变量和功能。即
this.state = {openModal1:false, openModal2:false}
this.openModal1 = this.openModal1.bind(this);
this.closeModal1 = this.closeModal1.bind(this);
this.openModal2 = this.openModal2.bind(this);
this.closeModal2 = this.closeModal2.bind(this);
我们可以看到,问题在于代码的冗余性。
2)使用功能消除冗余:维护用于更改模态内容的功能。
class Header extends React.Component {
constructor () {
super();
this.state = {open:false, ModalContent:''}
this.openModal = this.openModal.bind(this);
this.closeModal = this.closeModal.bind(this);
this.handleModalChangeEnter = this.handleModalChange.bind(this);
this.handleModalChangeLogin = this.handleModalChange.bind(this);
}
openModal () {
this.setState({open: true}); }
closeModal () {
this.setState({open: false}); }
handleModalChange1() {
this.setState({ ModalContent : '<h1>Modal1 Content</h1>'
}
handleModalChange2() {
this.setState({ ModalContent : '<h1>Modal2 Content</h1>'
}
render() {
模式构造应为:
return (
<header style={home}>
<div style={hello}>
<img style={logo} src='public/ycHEAD.png'/>
<p style={slogan}>One Calendar for All of Yerevan's Tech Events</p>
</div>
<div style={subContainer}>
<ul style={modalDirectory}>
<button onClick={this.handleModalChange1}
style={openButton}>
<li><a style={tabs}>Enter
</a></li>
</button>
<button onClick={this.handleModalChange2}
style={openButton}>
<li><a style={tabs}>Login
</a></li>
</button>
<Modal style={modalCont}
isOpen={this.state.open}>
<div dangerouslySetInnerHTML={{__html: this.state.ModalContent}} />
<button onClick={this.closeModal}
style={xButton}>x</button>
</Modal>