React JS Conditional Rendering
In this IT-dominated world, we are now forced to spend more of our time analyzing how to achieve better performance optimization. The programmer’s main objective is to utilize the right amount of time for optimizing the code as well as pushing reusable components as much as possible. This can be done through conditional rendering. Now you must be wondering what this term is and how you can implement it, right? Well, then you should continue reading as we are going to discuss what is React JS conditional rendering and the 5 ways how you can implement it in your code.
What is React JS Conditional Rendering?
What are the Prerequisites for React JS Conditional Rendering?
To learn about React JS conditional rendering and ways to implement them in your code, you are required to have a clear understanding of the following:
- Knowledge on how to import, export and render different React JS components
- Installation of Node.js locally
5 Practices for React JS Conditional Rendering
Now that you understand the need for conditional rendering, let us jump right to the different ways you can implement it. Below are the most useful ways to implement React JS conditional rendering:
- If-else statements
- Ternary Operation
- Logical AND
- Switch case operator
- Enum Objects
Now let us discuss each of the methods in-depth:
1. If-else Statements
This React JS conditional rendering can cause wasted re-renders which do not affect small to medium applications. But the performance of large-scale projects will drop drastically as there will be hundreds or thousands of elements getting rendered causing a huge lag.
2. Ternary Operator
3. Logical AND
The AND operator checks both the left and right expressions and then returns. If both the expressions are true, then it returns true or else false. We can use this AND operation to render JSX in React JS depending on certain conditions. The performance of this method for React JS conditional rendering is similar to the above two methods. But the AND operator along with JSX expressions is a better option as it forces you to rent the same structure while rendering and returning.
4. Switch Case Operator
5. Enum Object
There are many other ways to implement React JS conditional rendering in your web application like using high order components, element variables, or returning null. The above-mentioned methods are the easiest and most common practices used by developers. All these ways have their pros and cons. Hence according to your situation choose the method which fits you the best.
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