How do you use a while loop in JavaScript?

How do you use a while loop in JavaScript?

JavaScript while Loop

1. A while loop evaluates the condition inside the parenthesis () .
2. If the condition evaluates to true , the code inside the while loop is executed.
3. The condition is evaluated again.
4. This process continues until the condition is false .
5. When the condition evaluates to false , the loop stops.

Can I loop through a number JavaScript?

The For Loop is the most basic way to loop in your JavaScript code. It is very handy to execute a block of code a number of times. It uses a counter, whose value is first initialized, and then its final value is specified.

How do you loop through an array in react?

The map() method is the most commonly used function to iterate over an array of data in JSX. You can attach the map() method to the array and pass a callback function that gets called for each iteration. When rendering the User component, pass a unique value to the key prop.

What is the difference between while and do while loops in JavaScript?

While loop checks the condition first and then executes the statement(s), whereas do while loop will execute the statement(s) at least once, then the condition is checked. While loop is entry controlled loop whereas do while is exit controlled loop.

Do While loop flowchart in JavaScript?

JavaScript Do While Loop Flow Chart

• First, we initialize our variables.
• It will execute the group of statements inside the loop.
• Next, we have to use JavaScript Increment and Decrement operators inside the loop to Increment and Decrement value.
• Now it will check the condition.

What is while loop in JavaScript?

– While loop starts with the checking of condition. – Once the condition is evaluated to true, the statements in the loop body are executed. – When the condition becomes false, the loop terminates which marks the end of its life cycle.

How do I create an array in JavaScript?

Creating an Array. The array literal,which uses square brackets.

Do WHILE LOOP JS?

do while JavaScript includes another flavour of while loop, that is do-while loop. The do-while loop is similar to while loop the only difference is it evaluates condition expression after the execution of code block. So do-while loop will execute the code block at least once. Syntax: do { //code to be executed } while (condition expression)

How to loop through an array in JS?

Javascript for/in loop. The for/in loops through the properties of an object.