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    7                          Loops in JavaScript

                         Let’s surf
                             The for Statement                          The while Statement
                              The do-while Statement                    Nested Loop
                              Infinite Loop                             Jump Statements in JavaScript
                              Some More Programs

                      Let’s PLug-in                                                                         Critical Thinking

                        State whether these statements are true or false.

                        1.   JavaScript does not support conditional statements. __________

                        2.   We cannot use if statement inside other if statement. __________
                        3.   We can check multiple conditions in JavaScript. __________

                     Sometimes, you need to repeat a task multiple times or you may need to repeat the task either a

                     certain number of times or until a condition is satisfied. In JavaScript, the statements that are used
                     to repeat a set of instructions are called iterative or looping statements or simply loops. Loops are

                     very useful and necessary for developing applications. JavaScript provides three types of loops—for,
                     while and do-while.

                     In this chapter, you will learn about loops in JavaScript. Next, you will learn about nested loops in
                     JavaScript. At the end of this chapter, you will learn about jump statements in JavaScript.

                            THE FOR STATEMENT

                     The for statement or loop is used to repeat an instruction or a set of instructions for a fixed number
                     of times.  The syntax to use the for loop is as follows:

                     for (initialisation_expression; conditional_expression; update_
                     expression) {
                         // loop body
                     }

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