Monthly Archives: June 2022

To add element to array at specified index in JavaScript, you can use the splice() method, eg - arr.splice(1,0,'a'). The splice() method changes the contents of an array by removing…

To remove the last two elements from an array in JavaScript, you can use any one of the following methods - Use the Array.splice() methodUse the Array.slice() methodUse the pop()…

To remove empty elements from an array in JavaScript - Use a filter() method and pass it a function.This function will return a new array, with only those values that…

To find odd numbers in an array in JavaScript - Use the filter() method, passing it a function.In each iteration, check if the current number is not divisible by 2,…

To replace the first element of an array in JavaScript, you can use any of these methods - Use the array index to access the first element and assign it…

To check if two arrays contain common elements in JavaScript - Use the some() method on the first array, passing it a function.The function will check if the element present…

To update all elements in an array in JavaScript, you can use any of these methods - Use the Array.forEach() method on the array, passing it a function and on…

To use forEach() on an array in reverse order in JavaScript, you will need to create a copy of the array, reverse the new array and then use forEach() on…

To create an array if it doesn't exist in JavaScript - Check if the type of the variable is undefined or if the variable is not an array.If any of…

To find even numbers in an array in JavaScript - Use the filter() method on the array, passing it a function.This function will take in each element of the array…