react js get default theme of body

How to Get Default Theme of Body in React JS

Introduction

React JS is a popular library for building user interfaces. When building a React application, it's important to know how to access the default theme of the body. This can be useful when designing components that need to match the theme of the rest of the application.

Method 1: Using CSS Variables

One way to get the default theme of the body in React JS is to use CSS variables. CSS variables are a powerful feature of CSS that allow you to define variables that can be used throughout your stylesheets. To get the default theme of the body, you can define a CSS variable using the :root selector, like this:

:root {
  --default-bg-color: #fefefe;
}

This will define a variable called "--default-bg-color" with a value of "#fefefe", which is a common default background color for web pages. To use this variable in your React components, you can reference it in your CSS like this:

background-color: var(--default-bg-color);

This will set the background color of your component to the value of the "--default-bg-color" variable, which will match the default background color of the body.

Method 2: Using JavaScript

Another way to get the default theme of the body in React JS is to use JavaScript to get the computed styles of the body element. You can do this using the getComputedStyle() method, like this:

const body = document.getElementsByTagName('body')[0];
const bgColor = window.getComputedStyle(body).getPropertyValue('background-color');

This will get the computed value of the "background-color" property of the body element and store it in the "bgColor" variable. You can then use this variable to set the background color of your component, like this:

background-color: {bgColor};

This will set the background color of your component to match the default background color of the body.

Conclusion

In conclusion, there are multiple ways to get the default theme of the body in React JS. Using CSS variables is a powerful and flexible way to achieve this, while using JavaScript to get the computed styles of the body element is a more direct approach. By understanding these methods, you can design components that seamlessly match the theme of your React application.