Q511. What is the :checked pseudo-class used for in CSS?
The :checked pseudo-class is used to target form elements that have been selected by the user, such as checkboxes or radio buttons. This can be used to change the appeara...
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Q512. What is the purpose JSON stringify?
When sending data to a web server, the data has to be in a string format. You can achieve this by converting JSON object into a string using stringify() method. ```javasc...
Q513. What is the difference between component and container in React Redux?
**Component** is a class or function component that describes the presentational part of your application. **Container** is an informal term for a component that is conne...
Q514. What is the @media rule in CSS?
The @media rule in CSS allows developers to apply styles to a web page based on the size of the device or screen being used to view it, making it more responsive.
Q515. How do you parse JSON string?
When receiving the data from a web server, the data is always in a string format. But you can convert this string value to a javascript object using parse() method. ```ja...
Q516. What is the purpose of the constants in Redux?
Constants allows you to easily find all usages of that specific functionality across the project when you use an IDE. It also prevents you from introducing silly bugs cau...
Q517. What is PYTHONPATH?
It is an environment variable which is used when a module is import ed. Whenever a module is import ed, PYTHONPATH is also looked up to check for the presence of the impo...
Q518. What is the difference between fluid and fixed layouts in CSS?
A fluid layout in CSS adjusts its width and height based on the size of the screen, while a fixed layout has a set width and height. Fluid layouts use percentages to set ...
Q519. Why do you need JSON?
When exchanging data between a browser and a server, the data can only be text. Since JSON is text only, it can easily be sent to and from a server, and used as a data fo...
Q520. What are the different ways to write `mapDispatchToProps()`?
There are a few ways of binding _action creators_ to `dispatch()` in `mapDispatchToProps()`. Below are the possible options: ```javascript const mapDispatchToProps = (dis...