Develop Reference

react router bootstrap renders a blank page when using Linkcontainer in navbar

I used the react router bootstrap element 'linkContainer' to try and create a hyperlink leading to the '/courses' page but the browser returns a blank page with the following error in the console: React.children.only expected to receive a single react element child.
at Object.onlyChild [as only]
at LinkContainer
import React from 'react';
import { Container, Nav, Navbar, NavDropdown, Offcanvas } from 'react-bootstrap';
import { LinkContainer } from 'react-router-bootstrap'
function Header() {
return (
<header>
<Navbar bg="black" variant= "dark" expand='lg' className="py-4 border border-0">
<Container fluid>
<LinkContainer to='/'>
<Navbar.Brand> Market Snipers Academy </Navbar.Brand>
</LinkContainer>
<Navbar.Toggle aria-controls={`offcanvasNavbar-expand`} />
<Navbar.Offcanvas
id={`offcanvasNavbar-expand`}
aria-labelledby={`offcanvasNavbarLabel-expand`}
placement="end"
>
<Offcanvas.Header closeButton>
<Offcanvas.Title id={`offcanvasNavbarLabel-expand`}>
Market Snipers Academy
</Offcanvas.Title>
</Offcanvas.Header>
<Offcanvas.Body>
<Nav variant='pills' className="justify-content-start flex-grow-1 pe-3 rounded">
<LinkContainer to='/courses'> <Nav.Link>Courses</Nav.Link> </LinkContainer>
<NavDropdown
title="Dropdown"
id={`offcanvasNavbarDropdown-expand`}
>
<NavDropdown.Item href="#action3">Action</NavDropdown.Item>
<NavDropdown.Item href="#action4">
Another action
</NavDropdown.Item>
<NavDropdown.Divider />
<NavDropdown.Item href="#action5">
Something else here
</NavDropdown.Item>
</NavDropdown>
</Nav>
<Nav>
<Nav.Link href="#deets">Login</Nav.Link>
<Nav.Link eventKey={2} href="#memes">
Signup
</Nav.Link>
</Nav>
</Offcanvas.Body>
</Navbar.Offcanvas>
</Container>
</Navbar>
</header>
)
}
export default Header

How to change <Nav.Link> text color in React?

I have tried everything possible(inline, another CSS file you name it) but nothing seems to work.
I am trying to make a Navbar using React bootstrap.
This one: https://react-bootstrap.github.io/components/navbar/
Here's my code:
import React from 'react';
import './Navbar.css';
import Logo from './Logo.png';
import { Nav, Navbar, NavDropdown, FormControl, Button, Form } from "react-bootstrap";
const Nabar=()=>{
return(
<Navbar fixed="top" expand="sm" >
<Navbar.Brand href="/">
<img
src={Logo}
style={{width:'10em', Height:'10em'}}
className="d-inline-block align-top"
alt="Youth Math Logo"
/>
</Navbar.Brand>
<Navbar.Toggle aria-controls="basic-navbar-nav" />
<Navbar.Collapse id="basic-navbar-nav">
<Nav className="mr-auto">
//------------------------Over Here-----------------------------------------------------------------
<Nav.Link className="home" href="#home">Home</Nav.Link>
<Nav.Link href="#link">Link</Nav.Link>
<NavDropdown title="Dropdown" id="basic-nav-dropdown">
<NavDropdown.Item href="#action/3.1">Action</NavDropdown.Item>
<NavDropdown.Item href="#action/3.2">Another action</NavDropdown.Item>
<NavDropdown.Item href="#action/3.3">Something</NavDropdown.Item>
<NavDropdown.Divider />
<NavDropdown.Item href="#action/3.4">Separated link</NavDropdown.Item>
</NavDropdown>
</Nav>
<Form inline>
<FormControl type="text" placeholder="Search" className="mr-sm-2" />
<Button variant="outline-success">Search</Button>
</Form>
</Navbar.Collapse>
</Navbar>
);
}
export default Nabar;
I want to change it's color from default to white.

Try this:
.nav-link{
font-family: 'Roboto', sans-serif;
color: #2699FB !important;
}
inside "{}" put what you want, do not forget the "!important"

Instead of <Nav.Link href="#link">Link</Nav.Link>
write
<Nav.Link href="#link"><h4 className="linkText">Link</h4></Nav.Link>
Followed by CSS
.linkText{ color: white ; }

This may be too late. But may help someone in the future. Override this bootstrap CSS class.
.navbar-dark .navbar-nav .nav-link
{
color:#fff;
}

Late to the party but this done the trick for me
<Nav.Link href="/" style={{color:"white"}}>Log out</Nav.Link>

Reactjs Dropdown Menu not showing

I'm creating with reactjs Navbar which should include an dropdown menu component. I took the example from react bootstrap.
import React from 'react';
import {NavDropdown} from 'react-bootstrap'
export default function Dropdown() {
return (
<>
<div className="dropdown-style">
<NavDropdown title="Dropdown" id="collasible-nav-dropdown">
<NavDropdown.Item href="#action/3.1">Action</NavDropdown.Item>
<NavDropdown.Item href="#action/3.2">Another action</NavDropdown.Item>
<NavDropdown.Item href="#action/3.3">Something</NavDropdown.Item>
<NavDropdown.Divider />
<NavDropdown.Item href="#action/3.4">Separated link</NavDropdown.Item>
</NavDropdown>
</div>
</>
)
}
But when I run this code the dropdown menu does not open in the front.
But the dev-mode shows me that it's actually opening.
The dropdown menu is only showing when I'm including this css-style
.dropdown-style{
position: absolute;
But when I shrink the window then this component tears up the whole navbar when I merge it to the burger menu
I tried
{ .z-index: 999 }
But this didn't work.
Here is the navigation component
export default class Navbar extends Component {
state = {
isOpen: false
};
handleToggle = () => {
this.setState({ isOpen: !this.state.isOpen });
};
render() {
return (
<nav className="navbar">
<div className="nac-center">
<div className="nav-header">
<Link to="/">
<img src={logo} alt="foo" id="foo" />
</Link>
<button
type="button"
className="nav-btn"
onClick={this.handleToggle}
>
<FaAlignRight className="nav-icon" />
</button>
</div>
<div className="ul-width nav-font">
<ul
className={this.state.isOpen ? "nav-links show-nav" : "nav-links nav-terms"}
>
<li className="navbar-top">
<Link to="/support"
onClick={(this.state.isOpen) ? this.handleToggle : null}>
Support
</Link>
</li>
<li className="navbar-top">
<Link to="/aboutus"
onClick={(this.state.isOpen) ? this.handleToggle : null}>
<nobr>About Us</nobr>
</Link>
</li>
<li className="navbar-top">
<Link to="/foo"
onClick={(this.state.isOpen) ? this.handleToggle : null}>
foo
</Link>
</li>
<li className="navbar-top">
<Dropdown/>
</li>
</ul>
</div>
</div>
</nav>
);
}
}

I've found out for myself now.
If one of you have the same problem, just overwrite the css-class with .dropdown-menu { position:relative !important }
it seems that dropdown-menu is written by react itself and you just have to overwrite it.

How to customize and change color of a menu in ant design?

I'm currently using reactJs along with ant design to help me build a website. However, I've stumbled upon a problem. I can change the actual color of a menu, but I can't change the color of the menu item when it's been selected, or when the mouse is hovering over it. Here's the menu, Menu Image I want to change that white to a light green, but I haven't found any way to directly access it and change it. Also, I don't want to use LESS to do it.
Does anyone know how to fix this? Here's my code for the layout.
import { Layout, Menu, Icon, Row, Button, Col } from 'antd';
import React, { Component } from 'react'
import { BrowserRouter as Router, Route, Link } from "react-router-dom";
const { Header, Sider, Content } = Layout;
const { SubMenu } = Menu;
class BasicLayout extends React.Component {
state = {
collapsed: false,
path: this.path
};
toggle = () => {
this.setState({
collapsed: !this.state.collapsed,
});
};
render() {
return (
<Layout>
<Sider className='ant-menu' trigger={null} collapsible collapsed={this.state.collapsed}>
<div className="logo" />
<Menu className='ant-menu' mode="inline" defaultSelectedKeys={['1']}>
<Menu.Item key="1" >
<Link to='/'>
<Icon type="home" />
<span>Home</span>
</Link>
</Menu.Item>
<Menu.Item key="2">
<Link to='/about'>
<Icon type="plus" />
<span>About</span>
</Link>
</Menu.Item>
<SubMenu key="3" title={<span><Icon type="database" /><span>Directory</span></span>}>
<Menu.Item>
<Link to='/resources/living'>
<span>Living Resources</span>
</Link>
</Menu.Item>
<Menu.Item>
<Link to='/water2'>
<span>Non-Living Resources</span>
</Link>
</Menu.Item>
<Menu.Item>
<Link to='/resources/recycle'>
<span>Recycling Resources</span>
</Link>
</Menu.Item>
<Menu.Item>
<Link to='/resources/reducing'>
<span>Reducing Resources</span>
</Link>
</Menu.Item>
<Menu.Item>
<Link to='/resources'>
<span>General</span>
</Link>
</Menu.Item>
</SubMenu>
</Menu>
</Sider>
<Layout>
<Header style={{ background: '#fff', padding: 0 }}>
<Icon
className="trigger"
type={this.state.collapsed ? 'menu-unfold' : 'menu-fold'}
onClick={this.toggle}
/>
</Header>
<Content
style={{
margin: '24px 16px',
padding: 24,
background: '#fff',
minHeight: 280,
}}
>
{this.props.children}
</Content>
</Layout>
</Layout>
);
}
}
export default BasicLayout;

You need to change Link to NavLink and add attribute activeClassName
<NavLink to="/portoflio" activeClassName="your-active-class" className="link">Portoflio</NavLink>
For the hover options you can achieve it only with css
a.link:hover {
/*Any style you want to have link on mouse over*/
background-color: yellow;
}
.your-active-class{
/*Any style you want to have link that is active*/
background-color: yellow;
}
https://www.w3schools.com/cssref/sel_hover.asp

React bootstrap navbar collapse not working

I have used react Bootstrap navbar also used react-scroll for smooth navigation. It's working fine but navbar is not collapsing when clicking any nav item in the responsive mode.
Packages
import React, { Component } from "react";
import { NavLink } from "react-router-dom";
import { Link } from "react-scroll";
import { LinkContainer } from "react-router-bootstrap";
import { Navbar, Container, NavDropdown, Nav, Dropdown } from "react-bootstrap";
Navbar
<Navbar
sticky="top"
id="navbar"
bg="light"
expand="lg"
className="navbar navbar-expand-lg navbar-light bg-light"
collapseOnSelect={true}
>
<Navbar.Toggle aria-controls="basic-navbar-nav" />
<Navbar.Collapse id="basic-navbar-nav">
<Nav className="ml-auto">
<Link
activeClass="active"
to="features"
spy={true}
smooth={true}
offset={-70}
duration={800}
className="nav-link"
onClick={this.closeNavbar}
>
Features
</Link>
<Link
activeClass="active"
to="about"
spy={true}
smooth={true}
offset={-70}
duration={800}
className="nav-link"
>
About
</Link>
</Nav>
</Navbar.Collapse>
</Navbar>

Had the same issue. I found that "collapseOnSelect" works if we add "eventKey" for Nav.Link item
Example:
import { Link } from 'react-router-dom';
import { Nav, Navbar} from 'react-bootstrap';
<Navbar collapseOnSelect expand="lg">
<Navbar.Toggle />
<Navbar.Collapse>
<Nav className="mr-auto d-block">
<Nav.Item>
<Nav.Link eventKey="1" as={Link} to="/Home">
Home
</Nav.Link>
</Nav.Item>
<Nav.Item>
<Nav.Link eventKey="2" as={Link} to="/Contant">
Page Contant
</Nav.Link>
</Nav.Item>
</Nav>
</Navbar.Collapse>
</Navbar>

I had the same issue and resolved it by putting Bootstrap's Nav.Link back in. Here's how it would work based on your code :
<Navbar sticky="top" id="navbar"className="navbar" collapseOnSelect bg="light expand="lg">
<Navbar.Toggle aria-controls="basic-navbar-nav"/>
<Navbar.Collapse id="basic-navbar-nav">
<Nav className="ml-auto">
<Nav.Link>
<Link
activeClass="active"
to="features"
spy={true}
smooth={true}
offset={-70}
duration={800}
className="nav-link"
>
Features
</Link>
</Nav.Link>
</Nav>
</Navbar.Collapse>
</Navbar>

it's know issue in React Bootstrap that when we clicked on menu item it will not hide the menu automatically, below mentioned code help you to achieve the same.
An easy workaround that doesn't require jQuery:
<DropdownButton title={buttonTitle} onSelect={() => null}>
or if you're still using ES5:
<DropdownButton title={buttonTitle} onSelect={function() {}}>
It doesn't seem to matter what the onSelect callback returns.

I had the same problem, found a fix.
It is must to add expand attribute to your Navbar Component.
<Navbar variant="dark" expand="lg">

just use eventKey="2" inside <Nav.link/> . It will works fine for react js .