带有钩子的React TypeScript

来自班级

  this.history.push({
      pathname: "/unauthorized",
      state: { message: "Hello" },
    });

未经授权的功能组件

interface IState {
  message?: string;
}

export default function UnAuthorized() {
  const location = useLocation();
  const message = (location.state as IState).message;

  return (
    <div className="jumbotron">
      <h6>{message}</h6>
    </div>
  );
}

Pass

history.push({pathname:"/yourroute",state: {_id: "0001", name: "AZ"}})

Read

import React from 'react';

const YourRoute = props=> {
    const { _id, name } = (props.location && props.location.state) || {};
        //_id and name will contain the passed data
     .
     .
     .

}

下面是一个工作示例

我创建了一个自定义useQuery钩子

import { useLocation } from "react-router-dom";

const useQuery = (): URLSearchParams => {
  return new URLSearchParams(useLocation().search)
}

export default useQuery

使用它作为

const query = useQuery();
const id = query.get("id") as string

就这样发送

history.push({  
 pathname: "/template",
 search: `id=${values.id}`,
});
                  

添加信息以获取查询参数。

const queryParams = new URLSearchParams(this.props.location.search);
console.log('assuming query param is id', queryParams.get('id');

有关URLSearchParams的更多信息，请查看此链接 URLSearchParams

要使用React 16.8(带hooks)功能组件，您可以使用这种方式 我们发送PhoneNumber到Next Page Login.js

    import { useHistory } from 'react-router-dom';
    const history = useHistory();
        const handleOtpVerify=(phoneNumber)=>
          {
               history.push("/OtpVerifiy",{mobNo:phoneNumber})
          } 

<button onClick={handleOtpVerify}> Submit </button>

OtpVerify.js

    import  useLocation  from 'react-router-dom';
    const [phoneNumber, setphoneNumber] = useState("")
        useEffect(() => {
                setphoneNumber(location.state.mobNo)
            }, [location]);
    return (
    <p>We have sent Verification Code to your</p>
    <h1>{phoneNumber}</h1>
    )

React路由器dom版本6.2.1 useNavigate()已弃用

import { useNavigate } from "react-router-dom";

 const navigate = useNavigate()
 
 onClick={() => { navigate('/OtpVerifiy',{mobNo:phoneNumber}) }} 

您可以使用location将状态发送到其他组件，就像这样

在源组件中

this.props.history.push(pathComponent, sendState);

pathComponent是接收状态的目标组件

在目标组件中 如果您使用类组件，您可以像这样接收状态

Javascript版本

constructor(props) {
  this.state = this.props.location.state
}

打印稿版本

constructor(props: {}) {
  const receiveState = this.props.location.state as StateType // you must parse into your state interface or type
  this.state = receiveState
}

奖金

如果你想重置收到的状态。使用历史记录替换位置，像这样

this.props.history({pathName: currentPath, state: resetState})

“currentPath”为目标组件路径 resetState是你想要的新值状态