![]() ![]() height specifies the height of the image.The alt text is also good for screen readers. alt defines an alternate text that displays if the image cannot be rendered.src is used to specify the path to the location of the image on your computer or the web.In HTML, we use the tag to display images. The tag is used to create a horizontal line. There's the tag, which we use for creating line breaks. This is similar to but you use it as an inline container. It also acts as a parent container for other elements. The tag can be used to divide and style separate sections of the document. The to tags show different levels of headings in a document, with being the largest and being the smallest. When you're fleshing out your HTML document, you'll use certain tags to create the structure. tag – Used to write code snippets (usually JavaScript) or to link the document to an external script.tag – Used for defining styles for the document.tag – Used to link the document to an external resource.tag – This tag can be used to define additional information about the webpage.The following tags give additional information to the HTML document: specifies that we are working with an HTML5 document. tag – Acts as a container for the document's content that gets displayed on the browser.tag – Defines the title of the document which is displayed in the browser's title bar.tag– Includes all the document's metadata. ![]() tag – This tag acts as a container for every other element in the document except the tag.The following tags define the basic HTML document structure: You can use this article as a reference guide whether you're a beginner or experienced developer. We'll also see examples of how these tags, elements, and attributes work. Components, unlike JavaScript functions, must return JSX.In this tutorial, we will go over commonly used HTML tags, elements, and attributes.Component names must start with a capital letter (that is, M圜omponent, instead of m圜omponent).We can organized groups of elements into React components.Ī basic function component is written similarly to a regular JavaScript function with a couple of differences. 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. It includes all of the essential information in this article as a convenient PDF guide. 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.Ĭlick here to download the cheatsheet in PDF format. Do you want to get up to speed with React as quickly as possible? ![]()
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