We can write fragments in a regular or shorthand syntax: or. If we don’t want to wrap our elements in a container element like a div, we can use a fragment: // valid syntax React requires that all returned elements be returned within a single “parent” component.įor example, we can’t return two sibling elements, like an h1 and a paragraph from a component: // this syntax is invalid React also gives us an element called a fragment. Inline styles are not written as plain strings, but as properties on objects: My header

To apply inline styles, instead of using double quotes (“”), we use two sets of curly braces. The most common example is the class attribute, which we write as className. Since JSX is really JavaScript and JavaScript uses a camelcase naming convention (that is, “camelCase”), attributes are written differently than HTML. They must end in a forward slash /: Īdditionally, JSX requires a different syntax for its attributes. Unlike HTML, single-tag elements (like the img element), must be self-closing. However, because JSX is really just JavaScript functions (and not HTML), the syntax is a bit different. We write React elements using a feature called JSX. You can write any valid HTML element in React. React elements are written just like regular HTML elements. I’ve put together a super helpful cheatsheet to give you a complete overview of all of the React concepts you need to know in 2022.

Do you want to get up to speed with React as quickly as possible?

React code