So, you can also make it reusable when you want to render it conditionally.You can define the enum in seperate file and export it like this.Then, import it when you want to use it in a component.Higher Order Component (HOC) can be used to implement conditional rendering in React. Here, we are going to discuss this more details.At least, there are 7 methods of conditional rendering that we can use in React. Consider these two components: function UserGreeting (props) {return < h1 > Welcome back! Totally free!In React, conditional rendering can be done in many ways depend on contexts. Based on the example of the article, I created two JSFiddles. That’s why i don’t recommend using if-else statement inside JSX.There are some other ways for conditional rendering in JSX, just keep reading.Ternary operator is a shortcut for a common if-else statement. You can use it when you want to run some logic or checking before rendering a component.For example, you want to check if the users are authenticated before they access some components.Instead writing if-else statement in every component that needs authentication, you can use HOC to guard those component.You can use HOC for other reusable conditional rendering like loading indicator implementation, null checking, etc.To more details about HOC (with functional component), you can Though I wouldn’t recommend you using this method, I just want to let you know that there is a babel plugin that makes JSX have its own conditional rendering tags.In the compilation, those tags will be transformed into ternary operators.Some developers use this plugin because it looks more readable for conditional rendering in JSX.That’s all the 7 methods you can use for conditional rendering in React.Do you know other methods for conditional rendering in React? When we’re developing a React application, we often need to show or hide an element given a certain situation. Rendering React components is very important since it can make your app behave faster or slower, depending on your approach for rendering components, re-rendering components based on condition or state/props change.Here are a few methods you can use to render React components:Returning null from a component’s render method does not affect the firing of the component’s lifecycle methods.Functions that are executed immediately after they are defined:© Modern React Course for Full Stack Web Developers{"cookieName":"wBounce","isAggressive":false,"isSitewide":true,"hesitation":"500","openAnimation":"fadeIn","exitAnimation":false,"timer":"","sensitivity":"","cookieExpire":"7","cookieDomain":"loadfocus.com","autoFire":"","isAnalyticsEnabled":true} Each one of them has its own advantage in some contexts.This is the first method that all programmers know, the common if-else statement. The ternary operation makes the conditional rendering in React not only more concise, but gives you an easy way to inline the conditional rendering in your return. His work is developing web application, designing website and writing in Devaradise. But it has some limitations.You can’t inject if-else statement directly to it. I would like some advice as to the best practice when conditionally rendering an element or component in react-native.
Use JavaScript operators like if or the conditional operator to create elements representing the current state, and let React update the UI to match them. However, we can’t use common “if else” or “switch case” statement directly in JSX.In JSX, we should use other conditional rendering methods like the ternary operator and && operator. Here is how you conditionally render it using an enum object.As you can see, you need to create an enum object first called ‘ALERT_STATUS’. Then, you can render only some of them.
With ternary operator, you can write the conditional rendering inline, or in only one line of code.Let’s see the example of conditional rendering for variable value assignment.And this is conditional rendering example for function return value:As you can see, you can shorten if-else statement with just one line with ternary operator.You can also use ternary operator in JSX instead of using if-else with Immediately Invoked Function Expression (IIFE).Let’s say, we want to render a small component conditionally based on In the example above I only show you how to use a ternary operator to substitute if-else statement.Ternary operator can also be used to substitute multiple conditional rendering (if – else if – else) or nested conditional rendering.However, I don’t recommend you to use this as it’s harder to read than a common if-else statement.Let’ say you want to implement nested conditional rendering in JSX.For cases like this, using IIFE, switch-case statement or enum object is better than the ternary operator.With ternary operator, you can shorten if-else statement and have better choice for conditional rendering in JSX.But, do you know that there is a simpler method than ternary operator?A Short-circuit AND Operator can be used to replace an if statement like this.In Ternary operator, even when you have no ‘else’ condition, you should keep write ‘: null’ expression to avoid error.With short-circuit && operator, you don’t have to do that.But, keep in mind that short-circuit && operator can not be used to substitute an if-else statement, let alone an if-else if-else statement.Like if-else statement, switch-case statement is also a common feature in almost every programming language.It is used for multiple conditional rendering with the same type of condition.For example, we can use a switch-case statement to render a specific variable value based on user roles.You can also use a switch-case statement for conditional rendering in JSX.