< 1 min readYou can use the Web APIs of localStorage and sessionStorage to store objects in React JS. Here’s how you can do it: Storing Objects in localStorage: LocalStorage stores data that should also persist after the browser is closed. Keep in mind that the downside is, of course, its limit in storing data up to 5-10MB…
< 1 min readIn ReactJS, you can get the current date using JavaScript’s built-in Date object. Here’s an example of how you can do this: In this example, we’re using the useState hook to manage the state of the current date. We use the useEffect hook to set up an interval that updates the state every second using…
< 1 min readIn ReactJS, checking if a variable is a string is not specific to React itself but is a basic JavaScript operation. You can use the typeof operator to determine the data type of a variable. Here’s how you can check if a variable is a string: In this example, the typeof operator is used to…
< 1 min readTo empty an array in ReactJS, you can simply reassign the array variable to a new empty array. Here’s how you can do it: In this example, the handleEmptyArray method is called when the button is clicked. Inside this method, this.setState is used to update the state with an empty array, effectively emptying the array….
< 1 min readIn ReactJS, checking if a value exists in an array is a basic JavaScript operation. You can use the Array.prototype.includes() method or the Array.prototype.indexOf() method to accomplish this. Here’s how you can use each method: Check if value exists in an array in React JS. Using Array.prototype.includes(): The includes() method returns a boolean indicating whether…
< 1 min readIn ReactJS, getting the last item in an array is not specific to React itself but is a basic JavaScript operation. You can achieve this using various methods: Using Array Index: You can use the index -1 to access the last item in the array. Using Array.prototype.slice(): You can use the slice method to create…
< 1 min readIn ReactJS, you can convert a Unix timestamp to a human-readable time using the built-in Date object. Here’s how you can do it: In this example, replace the unixTimestamp variable with your actual Unix timestamp. The Date object in JavaScript works with Unix timestamps in milliseconds, so you need to multiply the timestamp by 1000…
< 1 min readTo remove empty or falsy elements from an array in React or JavaScript, you can use the filter() method. The filter() method creates a new array containing only the elements that pass a certain condition. In this case, you can filter out empty or falsy elements. Here’s how you can do it: In this example,…
< 1 min readTo find the sum of an array of numbers in React, you can use the reduce() method, which iterates through the array and accumulates the sum. Here’s how you can do it: In this example, the SumOfArray component calculates the sum of the numbers array using the reduce() method. The reduce() method takes a callback…
< 1 min readTo read a cookie in a React application, you can access the document.cookie property and parse the cookies to retrieve the desired value. Here’s how you can do it: In this example, the ReadCookie component defines the readCookie function, which takes the name of the cookie as an argument. It reads the document.cookie property, splits…
