如何滚动到一个元素?

我有一个聊天小部件，每当我向上滚动时，它就会弹出一个消息数组。我现在面临的问题是，当消息加载时，滑块固定在顶部。我想让它关注上一个数组的最后一个索引元素。我发现我可以通过传递索引来进行动态引用，但我也需要知道使用哪种滚动函数来实现这一点

 handleScrollToElement(event) {
    const tesNode = ReactDOM.findDOMNode(this.refs.test)
    if (some_logic){
      //scroll to testNode      
    }
  }

  render() {

    return (
      <div>
        <div ref="test"></div>
      </div>)
  }

当前回答

对我有用的是:

class MyComponent extends Component {
    constructor(props) {
        super(props);
        this.myRef = React.createRef(); // Create a ref    
    }

    // Scroll to ref function
    scrollToMyRef = () => {
        window.scrollTo({
            top:this.myRef.offsetTop, 
            // behavior: "smooth" // optional
        });
    };

    // On component mount, scroll to ref
    componentDidMount() {
        this.scrollToMyRef();
    }

    // Render method. Note, that `div` element got `ref`.
    render() {
        return (
            <div ref={this.myRef}>My component</div>
        )
    }
}

2018-12-18 08:41:24

其他回答

如果有人在使用Typescript，下面是Ben Carp的答案:

import { RefObject, useRef } from 'react';

export const useScroll = <T extends HTMLElement>(
  options?: boolean | ScrollIntoViewOptions
): [() => void, RefObject<T>] => {
  const elRef = useRef<T>(null);
  const executeScroll = (): void => {
    if (elRef.current) {
      elRef.current.scrollIntoView(options);
    }
  };

  return [executeScroll, elRef];
};

2021-07-01 08:16:17

遵循以下步骤:

1)安装:

npm install react-scroll-to --save

2)导入包:

import { ScrollTo } from "react-scroll-to";

3)使用方法:

class doc extends Component {
  render() {
    return(
      <ScrollTo>
        {({ scroll }) => (
          <a onClick={() => scroll({ x: 20, y: 500, , smooth: true })}>Scroll to Bottom</a>
        )}
      </ScrollTo>
    )
  }
}

2020-04-05 00:50:32

这是我发现的最简单的工作方式。只需使用正常的javascript语法，不需要太多的包

  const scrollTohowItWorks = () =>  window.scroll({
    top: 2000,
    left: 0,
    behavior: 'smooth'
  });
  
  <NavLink onClick={scrollTohowItWorks} style={({ isActive }) => isActive? {color: '#e26702', fontWeight:'bold'}: { color: '#0651b3'}} to=''>Support</NavLink>

2021-12-22 22:47:53

对我有用的是:

class MyComponent extends Component {
    constructor(props) {
        super(props);
        this.myRef = React.createRef(); // Create a ref    
    }

    // Scroll to ref function
    scrollToMyRef = () => {
        window.scrollTo({
            top:this.myRef.offsetTop, 
            // behavior: "smooth" // optional
        });
    };

    // On component mount, scroll to ref
    componentDidMount() {
        this.scrollToMyRef();
    }

    // Render method. Note, that `div` element got `ref`.
    render() {
        return (
            <div ref={this.myRef}>My component</div>
        )
    }
}

2018-12-18 08:41:24

你可以这样尝试:

 handleScrollToElement = e => {
    const elementTop = this.gate.offsetTop;
    window.scrollTo(0, elementTop);
 };

 render(){
  return(
      <h2 ref={elem => (this.gate = elem)}>Payment gate</h2>
 )}

2018-04-17 08:22:28

如何滚动到一个元素?

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