The check && num is false when num is null or an empty string. While Loop: A while loop is a control flow statement that allows code to be executed repeatedly based on the given Boolean condition. The ‘for’ loop structure. The while loop only requires the condition expression. This loop structure is used to execute a group of statements ( or single statement) as long as the given condition remains true. Instead, if you use loops, you can complete this task in just 3 or 4 lines. The JavaScript while loop structure. However, when the continue statement is executed, it behaves differently for different types of loops: In a while loop, the condition is tested, and if it is true, the loop is executed again In JavaScript, the break statement is used to stop/ terminates the loop early. If the condition is true, the loop will be … P.S. Test it Now. Of course, you will have to copy and paste the same line 100 times. while (condition) { // execute code as long as condition is true } A JavaScript do…while loop executes a statement once and then it checks if a condition is true. Active 5 years, 10 months ago. The while loop can be thought of as a repeating if statement. In JavaScript, a while statement is a loop that executes as long as the specified condition evaluates to true. The difference between continue and the break statement, is instead of "jumping out" of a loop, the continue statement "jumps over" one iteration in the loop. How to break from a (for, while) Loop in JavaScript. When developers talk about iteration or iterating over, say, an array, it is the same as looping. for loop; for/in a loop (explained later) while loop; do…while loop Summary: in this tutorial, you will learn how to use the JavaScript while statement to create a loop. Javascript-While loop . Syntax: while (condition) { // Statements } Example: This example illustrates the use of while loop. The JavaScript while statement creates a loop that executes a block of code as long as the test condition evaluates to true. JavaScript do…while Loops. Let’s see the simple example of while loop in javascript. The syntax of while loop is given below. JavaScript Loops while loop. JavaScript while Loop. The JavaScript ‘do-while’ loop structure. 1. The continue statement can be used to restart a while, do-while, for, or label statement.. The JavaScript while loop iterates the elements for the infinite number of times. Introduction to the JavaScript while loop statement. In this tutorial, we are going to learn about how to break from a for loop and while loop with the help of break statement in JavaScript. JavaScript loops are used to repeatedly run a block of code - until a certain condition is met. There are mainly four types of loops in JavaScript. The loop do..while repeats while both checks are truthy: The check for num <= 100 – that is, the entered value is still not greater than 100. The syntax is very similar to an if statement, as seen below. Different Types of Loops. Javascript while loop with if statements [closed] Ask Question Asked 7 years, 8 months ago. It should be used if number of iteration is not known. javascript1min read. When you use continue without a label, it terminates the current iteration of the innermost enclosing while, do-while, or for statement and continues execution of the loop with the next iteration. JavaScript includes a while loop to executes the code repeatedly till it satisfies a specified condition. Viewed 19k times 3. JavaScript offers several options to repeatedly run a block of code, including while, do while, for and for-in. The JavaScript while loop: The JavaScript while loop structure is a conditional loop structure. Then the while loop stops too. 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