【发布时间】：2020-07-25 02:15:37
【问题描述】：
我正在 React 中构建一个响应式导航栏，当您放大页面时，它会隐藏链接并显示一个带有链接下拉列表的按钮。
问题是，当我点击一个按钮时，它什么也不做，在引导网站中，它运行正常。
我做错了吗？
这是我的代码：
import React, { Component } from 'react';
import axios from "axios";
import { Redirect } from "react-router-dom"
import styles from '../styles/loginsignup.css'
import logo from '../img/nowyourguest.png'
import 'bootstrap/dist/css/bootstrap.min.css'
import 'jquery/dist/jquery.min.js'
import 'bootstrap/dist/js/bootstrap.min.js'
export default class Login extends Component {
state = {
email: '',
password: ''
};
handleSubmit = event => {
event.preventDefault();
const {email, password} = this.state;
axios({
url: "/authentication/signin",
method: "POST",
data: {
email,
password
}
})
.then(response => {
const isAuthenticated = response.data.isAuthenticated
window.localStorage.setItem('isAuthenticated', isAuthenticated);
this.props.history.push('/profile')
})
.catch(error => {
this.setState({
errorMessage: error.response.data.message
})
})
};
handleChange = event => {
const {name, value} = event.target;
this.setState({
[name]: value
})
}
render() {
const isAuthenticated = window.localStorage.getItem('isAuthenticated');
if (isAuthenticated) {
return <Redirect to='/profile'/>
}
return (
<div>
<nav className="navbar navbar-expand-lg navbar-light bg-light">
<a className="navbar-brand" href="#">Navbar</a>
<button className="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent"
aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span className="navbar-toggler-icon"/>
</button>
<div className="collapse navbar-collapse" id="navbarSupportedContent">
<ul className="navbar-nav mr-auto">
<li className="nav-item active">
<a className="nav-link" href="#">Home <span className="sr-only">(current)</span></a>
</li>
<li className="nav-item">
<a className="nav-link" href="#">Link</a>
</li>
<li className="nav-item dropdown">
<a className="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button"
data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown
</a>
<div className="dropdown-menu" aria-labelledby="navbarDropdown">
<a className="dropdown-item" href="#">Action</a>
<a className="dropdown-item" href="#">Another action</a>
<div className="dropdown-divider"/>
<a className="dropdown-item" href="#">Something else here</a>
</div>
</li>
<li className="nav-item">
<a className="nav-link disabled" href="#">Disabled</a>
</li>
</ul>
<form className="form-inline my-2 my-lg-0">
<input className="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search"/>
<button className="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
</form>
</div>
</nav>
</div>
)
}
}
module.exports = Login;
【问题讨论】：
-
你需要在按钮中使用 onClick 属性，否则他们什么都不做
-
我应该传递什么来激活它？
-
@Sarthak Aggarwal 给你的答案是安静的极品！
-
您想在提交表单时致电
handleSubmit？ -
我没有提交任何表格。
标签： javascript html reactjs bootstrap-4 react-bootstrap