how to toggle a class on a div in react project for opening a mobile menu in mobile

Question

This is my current code which shows up a hamburger menu.

 <div className="navlines">
   <span></span>
   <span></span>
   <span></span>
 </div>

I want to add a new class "open" to the existing class "navlines". how can i do this in react. i just started learning react a few days ago.

Atul kumar singh · Accepted Answer · 2018-06-04 14:11:31Z

1

You can use something like this

<div className={"navlines " + (this.props.showHamburgerMenu ? 'open' : 'close')}>

When the value of showHamburgerMenu is true , the open class will be added otherwise close class will be there.

You can either use from props or from state i.e

<div className={"navlines " + (this.state.showHamburgerMenu ? 'open' : 'close')}>

Based on some click or a user action , you can set the state of showHamburgerMenu to true.

answered Jun 4, 2018 at 13:27

Atul kumar singh

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Comments

Luke · Accepted Answer · 2018-06-04 13:27:39Z

1

just do as in html.

<div className="navlines open">

if you want to do it dynamically based on some condition you can

var className = "navlines" + (condition ? " open" : "");
return (<div className={ className } />);

answered Jun 4, 2018 at 13:27

Luke

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