Javascript 在reactjs中通过onChange提交时延迟post参数
我试图向api发送一个参数以给出准确的json响应,但是当我试图通过select onChange={onAddSubmit}提交表单时,它仍然传递默认值146846,但我已经将select更改为146847,因此得到的响应无效Javascript 在reactjs中通过onChange提交时延迟post参数,javascript,reactjs,axios,onchange,Javascript,Reactjs,Axios,Onchange,我试图向api发送一个参数以给出准确的json响应,但是当我试图通过select onChange={onAddSubmit}提交表单时,它仍然传递默认值146846,但我已经将select更改为146847,因此得到的响应无效 useEffect(() => { onAddSubmit(allValues); }, [allValues]); Home.js import React, { useEffect, useState } from "
useEffect(() => {
onAddSubmit(allValues);
}, [allValues]);
Home.js
import React, { useEffect, useState } from "react";
import Api from "../Api";
import AppContainer from "../tmp/AppContainer";
import HomeContainer from "./HomeContainer";
const Home = () => {
const [posts, setPosts] = useState();
const [loading, setLoading] = useState(false);
const [allValues, setAllValues] = useState({
contractId: "146846",
planId: "1028",
dateStart: "2021-01-30",
dateEnd: "2021-01-31",
numberOfAdults: 1,
numberOfChildren: 0,
planOption: "Individual",
unit: "day",
});
const changeHandler = (e) => {
setAllValues({ ...allValues, [e.target.name]: e.target.value });
};
const onAddSubmit = async (e) => {
e.preventDefault();
setLoading(true);
try {
await Api.getCurlPost({
...allValues,
}).then((response) => {
const result = response.data;
setPosts(result.data);
});
} catch {
alert("Failed to add post!");
} finally {
setLoading(false);
}
};
useEffect(() => {
onAddSubmit;
}, []);
return (
<AppContainer>
<HomeContainer
onAddSubmit={onAddSubmit}
changeHandler={changeHandler}
loading={loading}
posts={posts}
/>
</AppContainer>
);
};
export default Home;
import React,{useffect,useState}来自“React”;
从“./Api”导入Api;
从“./tmp/AppContainer”导入AppContainer;
从“/HomeContainer”导入HomeContainer;
常量Home=()=>{
const[posts,setPosts]=useState();
const[loading,setLoading]=useState(false);
常量[allValues,setAllValues]=useState({
缩写:“146846”,
planId:“1028”,
开始日期:“2021-01-30”,
日期结束:“2021-01-31”,
成人人数:1,
儿童人数:0,
计划选项:“个人”,
单位:“天”,
});
常量changeHandler=(e)=>{
setAllValues({…allValues,[e.target.name]:e.target.value});
};
const onAddSubmit=async(e)=>{
e、 预防默认值();
设置加载(真);
试一试{
等待Api.getCurlPost({
…所有价值观,
})。然后((响应)=>{
const result=response.data;
设置柱(结果数据);
});
}抓住{
警报(“添加帖子失败!”);
}最后{
设置加载(假);
}
};
useffect(()=>{
奥纳德苏米特;
}, []);
返回(
);
};
导出默认主页;
这是我的HomeContainer.js,它包含我的html和引导设计
import React, { Component } from "react";
import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
import { faPlane } from "@fortawesome/free-solid-svg-icons";
import { faCircleNotch } from "@fortawesome/free-solid-svg-icons";
class HomeContainer extends Component {
render() {
const { onAddSubmit, changeHandler, loading, posts } = this.props;
return (
<div>
<div className="row mb-auto">
<div className="col-md-6 p-2">
<img
width="100%"
src="../resources/img/starr/7437.jpg"
/>
<div className="mt-3 shadow-sm p-3 mb-5 bg-white rounded">
<h3 className="text-center">
<FontAwesomeIcon
icon={faPlane}
rotation={0}
style={{ marginRight: 5 }}
/>
Travel Details
</h3>
<form onChange={onAddSubmit}>
<div className="form-group">
<select
className="form-control"
name="contractId"
onChange={changeHandler}
>
<option value="146846">
TravelLead Domestic Travel Insurance
</option>
<option value="146847">
TravelLead International Travel
Insurance
</option>
</select>
</div>
<div className="form-group">
<select
className="form-control"
name="planId"
onChange={changeHandler}
>
<option value="1028">
Economy (Single Trip)
</option>
<option value="1029">
Elite (Single Trip)
</option>
</select>
</div>
</form>
</div>
</div>
</div>
</div>
);
}
}
export default HomeContainer;
import React,{Component}来自“React”;
从“@fortawesome/react fontawesome”导入{FontAwesomeIcon}”;
从“@fortawesome/free solid svg icons”导入{faPlane}”;
从“@fortwome/free solid svg icons”导入{faCircleNotch}”;
类HomeContainer扩展组件{
render(){
const{onAddSubmit,changeHandler,load,posts}=this.props;
返回(
旅行详情
TravelLead国内旅行保险
TravelLead国际旅行社
保险
经济舱(单程)
精英(单程)
);
}
}
导出默认HomeContainer;
我已经想好了,我在useEffect钩子上调用onAddSubmit时添加了allValues作为参数,如果allValues列表发生变化,它会自动向API提交请求并抛出响应
useEffect(() => {
onAddSubmit(allValues);
}, [allValues]);
在addsubmit函数中,只需将向axios发送请求的api参数上的…allValues更改为…data
const onAddSubmit = async (data) => {
setLoading(true);
try {
await Api.getCurlPost({
...data,
}).then((response) => {
const result = response.data;
setPosts(result.data);
});
} catch {
alert("Failed to add post!");
} finally {
setLoading(false);
}
};
不确定(现在无法测试),但我认为这是因为您使用的是onChange,而不是onSubmit。可能是在选择onChange之前触发Form onChange是的,它在我使用时起作用,它反映了默认值或我单击按钮时在表单中更改的内容,但我想要的是,当我更改任何输入类型时,它会将参数发送到api并立即给出响应,但是现在它不起作用了。当使用我的onChange提交它时,我的allValues没有反映更改。