解决办法: 1.目前来看你index_2.js 得content 没有其它改变得需求,也就是不需要自己得状态,你可以直接用传入的initData 也就是这样写import React, { useState, useEffect } from 'react';export default function Detail(props) { const { initData } = props; console.log('initData', initData); const...
import { useState, useEffect } from 'react' constTest= () => { const [count1, setCount1] = useState(0); const [count2, setCount2] = useState(0); useEffect(() => { console.log('useEffect触发了') }); return ( <> count1:{count1} count2:{count2} setCount1(count1 + 1)}...
import { originModule } from './module.js' // React Hook import { useState, useEffect } from 'react' 从源模块导入特定项,并在导入时指定自定义名称。使用关键字as,将输入的变量重命名。 import { originMoudle as newMoudleName } from './module.js' 命名空间导入 将源模块中的所有内容作为对象导入...
import React from 'react'; import { useState, useEffect } from 'react'; import axios from 'axios'; ``` 如果我们使用prettier并设置了按照字母顺序排列import语句的规则,那么经过prettier格式化后,代码将变成这样: 可以看到,prettier已经按照字母顺序重新排列了import语句,使其更加清晰和易读。这种一致的书序不仅...
import React, { useEffect, useState } from "react"; import get from "lodash/get"; import AV from "leancloud-storage"; import { getScoreList, getAroundScoreList } from "../utils/av"; import "./index.css"; function renderUser(user) { ...
实现无限滚动逻辑:在React组件中,使用useEffect钩子和滚动事件监听器来实现无限滚动逻辑。例如: 代码语言:txt 复制 import React, { useState, useEffect } from 'react'; const MyComponent = () => { const [data, setData] = useState([]); const [page, setPage] = useState(0); ...
import React, { useState, useEffect } from 'react'; import axios from 'axios'; function ProductList() { const [products, setProducts] = useState([]); useEffect(() => { axios.get('/api/products') .then(response => { setProducts(response.data); ...
importReact,{useState,useEffect}from'react';constMyComponent=()=>{const[count,setCount]=useState(0);useEffect(()=>{document.title=`Count:${count}`;},[count]);return(Count:{count}setCount(count+1)}>Increment);}; In this example, we import theuseStateanduseEffecthooks from ...
import React, { useState, useEffect } from 'react'; import { View, Text, Button, Alert, ActivityIndicator } from 'react-native'; const App = () => { const [isLoading, setIsLoading] = useState(false); const [message, setMessage] = useState(''); ...
importReact,{useStateastest,useEffect}from'react'; 它对应的 AST 是这样的: 也就是说默认 import 是ImportDefaultSpecifier,而解构 import 是ImportSpecifier ImportSpecifier语句有 local 和 imported 属性,分别代表引入的名字和重命名后的名字: 那我们的目的明确了,就是把ImportDefaultSpecifier转成ImportSpecifier,并...