Javascript reactjs状态未通过redux更新

我正在尝试使用ReactJS和Redux构建一个简单的计时器应用程序，但Redux中的状态有点问题

这是密码

import React from "react";

var {connect} = require('react-redux');
var actions = require('actions');

export var TodoBtns = React.createClass({
    startTimer: function (todoTimer) {
        var {dispatch} = this.props;
        setInterval(() => {
            console.log(todoTimer);
            dispatch(actions.startTimer(todoTimer - 1));
        }, 1000);
    render: function () {
        var {todoTimer} = this.props;
        return (
            <div>
                <a className="button" onClick={() => {
                    this.startTimer(todoTimer);
                }}>Start</a>
                <p>{todoTimer}</p>
            </div>
        );
    }
});

export default connect(
    (state) => {
        return {
            todoTimer: state.todoTimer
        };
    }
)(TodoBtns);

这就是reducers页面的外观

export var startTimer = (todoTimer) => {
    return {
        type: "START_TIMER",
        todoTimer
    };
};

export var startTimerReducer = (state = 0, action) => {
    switch (action.type) {
        case "START_TIMER":
            return action.todoTimer;
        default:
            return state;
    }
};

import * as redux from "redux";
import {startTimeReducer} from "reducers";

export var configure = (initialState = {}) => {
    var reducer = redux.combineReducers({
        todoTimer: startTimeReducer
    });

    var store = redux.createStore(reducer, initialState, redux.compose(
}

这就是商店配置页面的外观

export var startTimer = (todoTimer) => {
    return {
        type: "START_TIMER",
        todoTimer
    };
};

export var startTimerReducer = (state = 0, action) => {
    switch (action.type) {
        case "START_TIMER":
            return action.todoTimer;
        default:
            return state;
    }
};

import * as redux from "redux";
import {startTimeReducer} from "reducers";

export var configure = (initialState = {}) => {
    var reducer = redux.combineReducers({
        todoTimer: startTimeReducer
    });

    var store = redux.createStore(reducer, initialState, redux.compose(
}

其他一切都正常工作，因为我可以看到“timerTodo”状态每1秒在控制台中打印一次（由startTimer函数执行）。但是，即使我将“todoTimer-1”值传递给startTimer操作，todoTimer的值也不会更改

在这种情况下，我发现一件奇怪的事情是“dispatch（actions.startTimer（todoTimer-1））；”确实会启动，但只启动一次。因此，一旦todoTimer state的值减1，它就会停止更新todoTimer状态，而setInterval函数中的其他代码（如“console.log（todoTimer）”每隔一秒钟就会运行一次

---

我该怎么做才能在每一秒钟内减少todoTimer状态的值？

您每次都发送相同的值。因此，组件只渲染一次。 要快速测试，请尝试：

startTimer () {
    setInterval(() => {
       var {dispatch, todoTimer} = this.props;
        dispatch(startTimer(todoTimer - 1));
    }, 1000);
},

setInterval每次都应获取ToMotimer值

---

您每次发送的值都相同。因此，组件只渲染一次。 要快速测试，请尝试：

startTimer () {
    setInterval(() => {
       var {dispatch, todoTimer} = this.props;
        dispatch(startTimer(todoTimer - 1));
    }, 1000);
},

setInterval每次都应获取ToMotimer值

---

你确定

调度

是道具吗？你确定

调度

是道具吗？