Solved: Loop through class elements

The main problem with Loop through class elements is that it can be slow and inefficient.

var elements = document.getElementsByClassName("class");
for (var i = 0; i < elements.length; i++) {

This code is getting all elements with the class “class” and printing their inner HTML to the console.


Calculator is a library for performing mathematical operations in JavaScript. It provides a fluent API for common operations such as addition, subtraction, multiplication, and division.

Very Simple Calculator

A very simple calculator in JavaScript can be created as follows:

var calc = function(x) { return x * x; };

This code creates a function that takes an input of a number and returns the result of multiplying that number by itself.

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