有没有办法在React JS 没有 JQuery的点击事件中滚动创建动画?
我有导航,我想根据点击的用户转到页面部分。我想用一些动画来做。
问题是导航和部分不在同一个文件中。
我在主要组件中有这样的东西:
render() {
return (
<div>
<Header currentLanguage={this.props.language.labels}/>
{React.cloneElement(this.props.children, {
currentLanguage: this.props.language.labels
})}
<Footer currentLanguage={this.props.language.labels}/>
</div>
);
}
在这个道具中,孩子是我想要导航的部分。他们是:
return (
<div className="homeMain">
<section ref="home" className="marginOnXs">
<MainSlider />
</section>
<section id="performance" ref="performance">
<Performance currentLanguage={languageHome}/>
</section>
<section id="benefits" ref="benefits">
<Benefits currentLanguage={languageHome} />
</section>
<section ref="contact" id="contact">
<ContactForm currentLanguage={languageHome}/>
</section>
</div>
);
内部标题我有这样的事情:
<ul className="noPadding">
<li> <Link to="" onClick={this.handleScroll.bind(this, "home")}>Home </Link></li>
<li> <Link to="" onClick={this.handleScroll.bind(this, "contact")}>Contact?</Link></li>
</ul>
在句柄滚动中我尝试了类似的东西:
handleScroll(id, event){
event.preventDefault();
let test = ReactDom.findDOMNode(this.refs[id]);
let scrollTop = event.target.body.scrollTop,
itemTranslate = Math.min(0, scrollTop/3 - 60);
window.scrollTo(0, itemTranslate);
}
但它不起作用。 this.refs[id]
返回undefined。如果单击标题中的联系人链接,则函数中的参数ID为contact
,但找不到this.refs["contact"]
,因为它位于其他组件中。
有什么建议吗?
答案 0 :(得分:1)
您可以使用props传递函数,并将其用作兄弟组件之间的通信方式。
您可以在根组件中使用“this.props.handleScroll”并传递id以滚动到子项。像,
<ul className="noPadding">
<li> <Link to="" onClick={this.props.handleScroll.bind(this, "home")}>Home </Link></li>
<li> <Link to="" onClick={this.props.handleScroll.bind(this, "contact")}>Contact?</Link></li>
</ul>
<-- In your root component --->
<Header currentLanguage={this.props.language.labels} handleScroll={::this.handleScroll}} />
handleScroll(id, event) {
this.setState({
scrollToId: id
})
}
render() {
return (
<div>
<Header currentLanguage={this.props.language.labels}/>
{React.cloneElement(this.props.children, {
currentLanguage: this.props.language.labels,
scrollToId: this.state && this.state.scrollToId
})}
<Footer currentLanguage={this.props.language.labels}/>
</div>
);
}
<-- In your child component -->
componentDidUpdate() {
const idToScroll = this.props.scrollToId;
// you can access this.refs[idToScroll] here and get the
// scrollheight and scroll to the position of the element
}
return (
<div className="homeMain">
<section ref="home" className="marginOnXs">
<MainSlider />
</section>
<section id="performance" ref="performance">
<Performance currentLanguage={languageHome}/>
</section>
<section id="benefits" ref="benefits">
<Benefits currentLanguage={languageHome} />
</section>
<section ref="contact" id="contact">
<ContactForm currentLanguage={languageHome}/>
</section>
</div>
);
我认为你应该通过这个来更好地了解组件之间的沟通,React.js - Communicating between sibling components和React.js - Communicating between sibling components的答案