NallaRK

Array Methods Cheat Sheet

1. push()

• Definition: Adds one or more elements to the end of an array and returns the new length of the array.
• Syntax: array.push(element1[, ...[, elementN]])
• Example:

  let arr = [1, 2, 3];
  arr.push(4, 5);

console.log(arr); // Output: [1, 2, 3, 4, 5]

NallaRK

const flattenObject = (input, keyName) => {
var result = {};
for (const key in input) {
 const newKey =  keyName ? `${keyName}_${key}` : key;
 if (typeof input[key] === "object" && !Array.isArray(input[key])) {
       result = {...result, ...flattenObject(input[key], newKey)}
 } else {
       result[newKey] = input[key];
 }
}