onClick不更改REACTJS中的useState
当我单击closeBet方法时,它似乎不会触发任何东西。有人能解释一下原因吗?我想我只是不明白为什么工作不正常。而且,即使是另一个useState isActive也没有完成它的工作。那么我应该怎么做才能在单击后正确地更改useState。提前谢谢onClick不更改REACTJS中的useState,reactjs,Reactjs,当我单击closeBet方法时,它似乎不会触发任何东西。有人能解释一下原因吗?我想我只是不明白为什么工作不正常。而且,即使是另一个useState isActive也没有完成它的工作。那么我应该怎么做才能在单击后正确地更改useState。提前谢谢 import React, { useState } from 'react'; import Button from '@material-ui/core/Button'; import FilterMenu from "./select
import React, { useState } from 'react';
import Button from '@material-ui/core/Button';
import FilterMenu from "./selectButton";
import FetchRandomBet from "./fetchRandomBets";
function Betslip() {
const data = [
{
value: 0,
label: "No Filter"
},
{
value: 1,
label: "Less than two"
},
{
value: 2,
label: "More than two"
},
]
const [selectedValue, setSelectedValue] = useState(0);
const [allStakes, setAllStakes] = useState(null);
const [isActive, setActive] = useState("false");
const handleChange = obj => {
setSelectedValue(obj.value);
}
const betNow = () => {
if (!allStakes) {
const stakes = localStorage.getItem("stakes");
const jsnStake = JSON.parse(stakes) || [];
setAllStakes([jsnStake]);
setActive(isActive);
console.log('yes')
} else if (allStakes) {
localStorage.setItem("stakes", null);
setAllStakes([])
console.log('no')
}
}
const closeBet = () => {
setActive("false");
}
console.log(allStakes)
return (
<div className="betslip">
<div className="betslip-top">
<h1 className="text">BETSLIP</h1>
<p className="text-two">BET WITH US!</p>
<div>
<FilterMenu
optionsProp={data}
valueProp={selectedValue}
onChangeProp={handleChange}
/>
</div>
</div>
<div>
<FetchRandomBet
valueProp={selectedValue}
/>
</div>
<Button
onClick={betNow}
className="betnow"
variant="contained"
>
Bet Now!
</Button>
<div className={isActive ? "bet-show" : "bet-noshow"}>
<button
onClick={closeBet}>
x
</button>
<h1>
{allStakes}
</h1>
</div>
</div >
);
}
export default Betslip;
import React,{useState}来自“React”;
从“@material ui/core/Button”导入按钮;
从“/selectButton”导入过滤器菜单;
从“/fetchRandomBets”导入FetchRandomBet;
函数Betslip(){
常数数据=[
{
值:0,
标签:“无过滤器”
},
{
价值:1,
标签:“少于两个”
},
{
价值:2,
标签:“两个以上”
},
]
常量[selectedValue,setSelectedValue]=使用状态(0);
常量[AllStacks,SetAllStacks]=useState(null);
const[isActive,setActive]=useState(“false”);
常量handleChange=obj=>{
设置选定值(目标值);
}
常数betNow=()=>{
如果(!所有股份){
const stacks=localStorage.getItem(“stacks”);
const jsnStake=JSON.parse(木桩)| |[];
设置所有桩号([jsnStake]);
setActive(isActive);
console.log('yes')
}否则,如果(所有股份){
setItem(“木桩”,null);
设置所有桩号([])
console.log('no')
}
}
const closeBet=()=>{
setActive(“假”);
}
console.log(所有桩)
返回(
贝特利普
与我们打赌
现在打赌!
x
{allstacks}
);
}
出口违约金;
您使用的是字符串
而不是布尔值
作为isActive状态。应该是这样的:
const[isActive,setActive]=useState(false)代码>
更新状态时:
const closeBet = () => {
setActive(false);
}
删除false
值周围的引号,该值应按预期工作。您可能希望将该值设置为false
,因此不应使用引号,因为它会变成字符串
setActive(假);