For loop example: 1 2 3 4 5 6 var sum = 0; for (var i=1; i<=100; i++) { sum += i; } alert(sum); //5050 You may use break to jump out of the loop:1 2 3 4 5 6 7 var sum = 0; for (var i=1; i<=100; i++) { if (i ==
If expression 2 returns true, the loop will start over again. If it returns false, the loop will end. Note If you omit expression 2, you must provide abreakinside the loop. Otherwise the loop will never end. This will crash your browser. Read about breaks in a later chapter of this ...
You’ll see in the examples how each of these clauses is translated into code. So let’s start right away. Using simpleforloops The most typical way to useforloops is counting. You just need to tell the loop where to start, where to finish, and with what pace to count. This is ho...
For loop is a very versatile loop in JavaScript. Even though it has very basic usage, you can also use it in some advanced use cases. Here are some examples: 1. Looping Backwards Efficiently It means starting theforloop from the last item in an array and moving backward to the first it...
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for/in- loops through the properties of an object while- loops through a block of code while a specified condition is true do/while- also loops through a block of code while a specified condition is true The For Loop The for loop is often the tool you will use when you want to create...
This JavaScript tutorial explains how to use the for loop with syntax and examples. In JavaScript, the for loop is a basic control statement that allows you to execute code repeatedly for a fixed number of times.
For loops are the most used loops in any language. But there is more than one way to iterate using a for loop. These are the ways you can use the for loop in JavaScript. The advantages and disadvantages are given too.
You’ll see in the examples how each of these clauses is translated into code. So let’s start right away. Using simpleforloops The most typical way to useforloops is counting. You just need to tell the loop where to start, where to finish, and with what pace to count. This is ho...
Introduction to loops What is the for loop meant for Syntax of for Basic for loop examples Nested for loops The break and continue keywords The return keyword Introduction Loops, also known as loop statements or iteration statements, are amongst those ideas in programming without which it's not...