React Js Compress Decompress string
React Js Compress Decompress string: React JS is a programming tool used to create websites. When we say "compress" or "decompress" a string, it means we want to make it smaller or bigger again. Think of a sponge that can shrink when we squeeze it and get bigger again when we let it go. Similarly, to compress a string, we first prepare it to be squeezed and then use a special tool to make it smaller. To decompress it, we use the same tool to make it bigger again. There are different ways to do this, and we can choose the best method depending on what we need. Although React JS itself does not have these capabilities, we can use regex to achieve this.
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How can I compress a string using React js?
This React component utilizes useState, useEffect, and useRef from the React library. It allows users to input a string, which is then compressed by replacing consecutive repeated characters with the character followed by the count of consecutive occurrences.
The App function serves as the main React component. It initializes two state variables: inputString (set to "aabbcc" initially) and compressedString (initially an empty string).
The compressString function employs a regular expression to identify consecutive repeated characters and replaces them with the character followed by the count. The compressed string is then assigned to the compressedString state variable using the setCompressedString function.
The component's UI is defined within the return statement, featuring a div with a header, input field, button, and two paragraphs displaying the original and compressed strings.
The onChange event handler updates the inputString state variable with the user's input, while the onClick event handler invokes the compressString function to compress the input string and update the compressedString state variable.
Output of React Js Compress String
How can I decompress a string in React js?
This JavaScript code, implemented with the React library, aims to decompress a given string that is in a compressed form. The code begins by importing the useState, useEffect, and useRef hooks from the React library. The main component of the application is the App function, where two state variables, compressedString and decompressedString, are defined using the useState hook.
The compressedString variable is initialized to 'a2b2c2', representing the compressed form of 'aabbc'. The decompress function is then defined, which will execute upon the user clicking the 'Decompress' button. This function employs a regular expression to match the pattern of the compressed string.
The setDecompressedString function is called within this function, utilizing the replace method on the compressed string. The replace method receives a regex to match the pattern and a function that handles each match. In this case, the function takes the character and count of each match and returns the decompressed string by repeating the character 'count' number of times.
The return statement within the App function specifies the UI structure, featuring a text input, a 'Decompress' button, and a paragraph for displaying the decompressed string.
Output of React Js Decompress String
