我有两个组成部分:
目前,我想处理表单提交和输入值的更改。我在react官方网站上阅读了这两篇文章以帮助我:
但是,当我在LoginForm中输入值时,我仍然没有检测到LoginPage组件的提交和更改。
你能帮我看看我的错误在哪里吗?
预先感谢。
我的两个组成部分:
LoginPage.js
class LoginPage extends Component {
constructor(props) {
super(props);
this.state = {
login: true, //switch between Login and SignUp
email: '',
password: '',
firstName: '',
lastName: ''
};
this.handleSubmit = this.handleSubmit.bind(this);
this.handleInputChange = this.handleInputChange.bind(this);
}
handleSubmit(){
alert("SUBMIT");
}
handleInputChange(event) {
alert("YOUHOU");
const target = event.target;
const value = target.value;
const name = target.name;
this.setState({
[name]: value
});
alert("YEEEP");
}
render(){
return (
<div>
<div>
{this.state.login ?
<Login onSubmit={this.handleSubmit} onChange={this.handleInputChange}/>
:
<Register />
}
</div>
<a
onClick={() => this.setState({ login: !this.state.login })}
>
{this.state.login ? 'Besoin d\'un compte ?' : 'Déjà un compte ?'}
</a>
</div>
)
}
}
LoginForm.js
class LoginForm extends Component {
render(){
return (
<div>
<Card>
<form onSubmit={this.props.handleSubmit}>
<div>
<div>
<TextField name="email" floatingLabelText="Email" errorText="Champ obligatoire" type="text" onChange={this.props.handleInputChange}/>
</div>
<div>
<TextField name="password" floatingLabelText="Mot de passe" errorText="Champ obligatoire" type="password" onChange={this.props.handleInputChange} />
</div>
<CardActions>
<div>
<RaisedButton label="Se connecter" primary={true} type="submit" fullWidth />
</div>
</CardActions>
</div>
</form>
</Card>
</div>
);
}
}
最佳答案
handleInputChange
作为LoginForm
属性传递给onChange
,类似地,handleSubmit
传递给名称onSubmit
,因此您需要像
class LoginForm extends Component {
render(){
return (
<div>
<Card>
<form onSubmit={this.props.onSubmit}>
<div>
<div>
<TextField name="email" floatingLabelText="Email" errorText="Champ obligatoire" type="text" onChange={this.props.onChange}/>
</div>
<div>
<TextField name="password" floatingLabelText="Mot de passe" errorText="Champ obligatoire" type="password" onChange={this.props.onChange} />
</div>
<CardActions>
<div>
<RaisedButton label="Se connecter" primary={true} type="submit" fullWidth />
</div>
</CardActions>
</div>
</form>
</Card>
</div>
);
}
}
关于javascript - 处理react中子组件的提交和更改,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/48773177/