Javascript 单击提交(反应)后无法自动清除输入字段
我是新手,在单击提交按钮后,我无法尝试自动清除输入字段。我相信我已经通过react使组件完全受控,其中输入值完全依赖于状态的输入。希望有人能帮忙。我已经被困了几个小时了。真的不知道我哪里出错了。谢谢Javascript 单击提交(反应)后无法自动清除输入字段,javascript,reactjs,form-submit,submit-button,Javascript,Reactjs,Form Submit,Submit Button,我是新手,在单击提交按钮后,我无法尝试自动清除输入字段。我相信我已经通过react使组件完全受控,其中输入值完全依赖于状态的输入。希望有人能帮忙。我已经被困了几个小时了。真的不知道我哪里出错了。谢谢 import React, { Component } from 'react'; import './App.css'; import Axios from 'axios'; import { Link, BrowserRouter, Route} from 'react-router-dom'
import React, { Component } from 'react';
import './App.css';
import Axios from 'axios';
import { Link, BrowserRouter, Route} from 'react-router-dom';
import reviews from './Screen/Reviews';
class App extends Component{
constructor() {
super();
this.state = {
movieName: '',
setReview: ''
};
this.onMovieChange = this.onMovieChange.bind(this);
this.onReviewChange = this.onReviewChange.bind(this);
this.submitReview = this.submitReview.bind(this);
}
onMovieChange(e) {
this.setState({
movieName: e.target.value
});
}
onReviewChange(e) {
this.setState({
setReview: e.target.value
});
}
submitReview(e) {
e.preventDefault();
const movieName = this.state.movieName;
const movieReview = this.state.setReview;
Axios.post('http://localhost:3001/api/insert',
{movieName: movieName, movieReview: movieReview}).then(()=>
{
alert('Insert successfully');
}
)
this.setState({
movieName: '',
setReview: ''
})
}
render() {
return (
<BrowserRouter>
<div className="form">
<form >
<ul className="form-container">
<li>
<h2>Movie Review</h2>
</li>
<li>
<label htmlFor="movieName">
Movie Name {" "}
</label>
<input className="movieName" type="movieName" name="movieName" id="movieName" onChange={this.onMovieChange}>
</input>
</li>
<li>
<label htmlFor="review">Review{" "}</label>
<input className="review" type="review" id="review" name="review" onChange={this.onReviewChange}>
</input>
</li>
<li>
<button onClick={this.submitReview} type="submit" className="button-register-registration ">Submit</button>
</li>
<li>
<Link to="/review" className="button-register-for-sign-in" ><h4>Go to reviews</h4></Link>
</li>
</ul>
</form>
<main>
<div className="content">
<Route path={"/review"} component={reviews}></Route>
</div>
</main>
</div>
</BrowserRouter>
);
}
}
import React,{Component}来自'React';
导入“/App.css”;
从“Axios”导入Axios;
从“react router dom”导入{Link,BrowserRouter,Route};
从“/Screen/reviews”导入评论;
类应用程序扩展组件{
构造函数(){
超级();
此.state={
电影名称:'',
setReview:“”
};
this.onMovieChange=this.onMovieChange.bind(this);
this.onReviewChange=this.onReviewChange.bind(this);
this.submitReview=this.submitReview.bind(this);
}
onMovieChange(东){
这是我的国家({
movieName:e.target.value
});
}
更新(e){
这是我的国家({
setReview:e.target.value
});
}
提交视图(e){
e、 预防默认值();
const movieName=this.state.movieName;
const movieview=this.state.setReview;
轴心柱http://localhost:3001/api/insert',
{movieName:movieName,movieReview:movieReview})。然后(()=>
{
警报(“插入成功”);
}
)
这是我的国家({
电影名称:'',
setReview:“”
})
}
render(){
返回(
-
影评
-
电影名称{“”}
-
复习{'}
-
提交
-
浏览评论
);
}
}
您将输入视为不受控制的组件,因此react无法控制其值,因此无法与其状态同步。因此,通过如下更新来控制您的输入
<input className="movieName" type="movieName" name="movieName" id="movieName" onChange={this.onMovieChange} value={this.state.movieName}>
Praveen Mathew Philip的回答是正确的,应该可以解决您的问题,但您的代码还有其他问题 首先,在您的两个输入中:
<li>
<label htmlFor="movieName">
Movie Name {" "}
</label>
<input className="movieName" type="movieName" name="movieName" id="movieName" onChange={this.onMovieChange}></input>
</li>
<li>
<label htmlFor="review">Review{" "}</label>
<input className="review" type="review" id="review" name="review" onChange={this.onReviewChange}></input>
</li>
最后,您可以使用名为Prettier的工具来改进代码
它将清除一些缩进并替换一些无用的代码,例如
<Route path={"/review"} component={reviews}></Route>
借
等等
<Route path={"/review"} component={reviews}></Route>
<Route path="/review" component={reviews} />