The rest operator (Rest parameter… ) instructs the computer to add whatever arguments) supplied by the user into an array. The rest parameter syntax allows… Read More »JavaScript rest operator | Rest parameter
Using the JavaScript spread operator (…) you can copy all or part of an existing array or object into another array or object. The spread… Read More »Spread operator JavaScript | Basics
Use the findIndex() method, by passing a provided callback function as an argument to find an index of the object in the array by property… Read More »JavaScript find index of object in array by property value | Example
Use concat() and push() methods with for loop to get Flatten array in JavaScript recursion. The solution below uses array.concat(…) to combine both the result… Read More »Flatten array JavaScript recursion | Example code
Use the concat() method to flatten an array of arrays (merge arrays) in JavaScript. Using the apply method of concat will just take the second… Read More »JavaScript flatten array of arrays | Example code
Use the Array concat() method to flatten the array of objects in JavaScript. ES 2020 gives the flat, also flatMap if you want to iterate… Read More »JavaScript flatten array of objects | Example code
Use JavaScript flat() method to create a new Flatten array with all sub-array elements concatenated into it recursively up to the specified depth. A depth… Read More »JavaScript Flatten array | flat() Method
Use findIndex() method to find objects in Array by value and use bracket notation to update objects in JavaScript. JavaScript find the object in the… Read More »JavaScript find object in array by property value and update | Example
Use a mix of the map and the spread operator to update the array using the spread operator. You can set the value after you’ve… Read More »Update array using spread operator | Example code
Use the Object values method to convert nested JSON objects to arrays in JavaScript. This method returns an array of a given object’s own enumerable… Read More »Convert nested JSON object to array JavaScript | Example code