我在渲染函数中有一个简单的表单，如下所示:
render : function() {
return (
<form>
<input type="text" name="email" placeholder="Email" />
<input type="password" name="password" placeholder="Password" />
<button type="button" onClick={this.handleLogin}>Login</button>
</form>
);
},
handleLogin: function() {
//How to access email and password here ?
}
我应该在我的handleLogin: function(){…}访问电子邮件和密码字段?
当前回答
对付裁判的一个简单方法:
class UserInfo extends React.Component { constructor(props) { super(props); this.handleSubmit = this.handleSubmit.bind(this); } handleSubmit(e) { e.preventDefault(); const formData = {}; for (const field in this.refs) { formData[field] = this.refs[field].value; } console.log('-->', formData); } render() { return ( <div> <form onSubmit={this.handleSubmit}> <input ref="phone" className="phone" type='tel' name="phone"/> <input ref="email" className="email" type='tel' name="email"/> <input type="submit" value="Submit"/> </form> </div> ); } } export default UserInfo;
其他回答
onChange(event){
console.log(event.target.value);
}
handleSubmit(event){
event.preventDefault();
const formData = {};
for (const data in this.refs) {
formData[data] = this.refs[data].value;
}
console.log(formData);
}
<form onSubmit={this.handleSubmit.bind(this)}>
<input type="text" ref="username" onChange={this.onChange} className="form-control"/>
<input type="text" ref="password" onChange={this.onChange} className="form-control"/>
<button type="submit" className="btn-danger btn-sm">Search</button>
</form>
输出图像附在这里
从react中导入{useState}
导出默认函数App() { const [data, setData] = useState({})
const updateData = e => {
setData({
...data,
[e.target.name]: e.target.value
})
}
const submit = e => {
e.preventDefault()
console.log(data)
}
return (
<form onSubmit={submit}>
<input
name="email"
type="email"
onChange={updateData}
/>
<input
name="password"
type="password"
onChange={updateData}
/>
<button>Submit</button>
</form>
)
}
如果你在项目中使用Redux，你可以考虑使用这个更高阶的组件https://github.com/erikras/redux-form。
<form onSubmit={handleLogin}>
<input type="text" name="email" placeholder="Email" />
<input type="text" name="password" placeholder="Password" />
<button type="submit">Login</button>
</form>
const handleLogin = (event) => {
event.preventDefault();
console.log(event.target[0].value)
console.log(event.target[1].value)
}
这是一个动态添加字段的示例。在这里，表单数据将使用React useState钩子通过输入名称键存储。
import React, { useState } from 'react' function AuthForm({ firebase }) { const [formData, setFormData] = useState({}); // On Form Submit const onFormSubmit = (event) => { event.preventDefault(); console.log('data', formData) // Submit here }; // get Data const getData = (key) => { return formData.hasOwnProperty(key) ? formData[key] : ''; }; // Set data const setData = (key, value) => { return setFormData({ ...formData, [key]: value }); }; console.log('firebase', firebase) return ( <div className="wpcwv-authPage"> <form onSubmit={onFormSubmit} className="wpcwv-authForm"> <input name="name" type="text" className="wpcwv-input" placeholder="Your Name" value={getData('name')} onChange={(e) => setData('name', e.target.value)} /> <input name="email" type="email" className="wpcwv-input" placeholder="Your Email" value={getData('email')} onChange={(e) => setData('email', e.target.value)} /> <button type="submit" className="wpcwv-button wpcwv-buttonPrimary">Submit</button> </form> </div> ) } export default AuthForm
