As it is directly implemented in the classNames property, it doesn't hinder with code maintainability and helps us write cleaner code. In this article, we will be learning how to apply conditional logic to different forms of CSS styles in React JS. apply class conditionally react. conditional css react based on where it is. JavaScript. As far as I can tell, AccordionItemState cannot be rendered above an AccordionItem so I can't apply a conditional className prop to an AccordionItem. How to conditionally apply class names in React | Reactgo Conditional styling in React JS is an important and widely used method for DOM manipulation and styling based on a state or condition. Create a Class Component. First example will cover react if else statement in render function and Second example will cover up . Placing conditional div tags in React JS render We can add a multiple class names to the react element conditionally; by using template literals, ternary operator. Thanks for all your work, react-static is awesome! We'll create a Greeting component that displays either of these components depending on whether a user is . react conditional classname . Adding Multiple Class Names in React Components - Medium conditional classname prop react Code Example Conditional rendering in React (jsx) | by Kawere Wagaba - Medium How to Handle Conditional Class Names in React? By default, React only allows strings in the className prop. Conditionally means class names are only applied to the element when a particular condition is true, like if isActive property is true we are adding a class name to the div element, otherwise class name is removed. Lists & Conditional Rendering - React react dynamic import. We'll look at conditional UI rendering along the way. Usage with React.js. Maybe I'm looking at this the wrong way, the end goal is to render the accordion 100% height of parent container. So, if the class name (or value) is coerced to false when it is: An empty . Code is better than words. The second way is not too different than the first one. Using classnames your example would look something like: In this case, we will make use of the if/else statement to conditionally render a login or logout view. A boolean or function that returns a truthy value that indicates whether the prop is required or not. < div className = { classNames( "constant1", "constant2", { active: isActive, ready: isReady } ) } ></ div > Related in JS.