JavaScript
// Copy the whole code below
var percent = 0.25;
var distance = 4125;
if (distance > 10500) {
percent = 0.35;
}
var miles = distance * percent;
console.log('We’ll get ' + miles + ' miles for the flight to Irkutsk');
// Paste the code after this comment
Thanks! We’ll fix everything at once!
Result
- Copy the entire code written before and paste it into the editor after the existing code.
- Change the second message in the console to 'We’ll get ' + miles + ' miles for the flight to Kamchatka'.
- Set value 11000 to the second variable distance.
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Fasten your seat belts</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/functions/check-miles">2. Long-distance flight</a></li><li class="main-nav__course-contents-item main-nav__course-contents-item--current"><a href="/courses/javascript-programming/functions/kamchatka-miles">3. Going the second circle</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/functions/first-function">4. Helper function</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/functions/function-call">5. Function, I’m calling you!</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/functions/parameter">6. I have a parameter for you</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/functions/order-of-parameters">7. Order of parameters</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/functions/return">8. Return from function</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/functions/summary-1">9. Summary of “Functions”. Part 1</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/functions/challenge-salary">10. Seventh program: “From salary to salary”</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/functions/check-flight-class">11. Business trip</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/functions/add-variables">12. Write, simplify</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/functions/refactor-return">13. Get rid of unnecessary</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/functions/optimization">14. Make me beautiful</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/functions/add-percent">15. Just add percentage</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/functions/calculate-flights">16. Call me quietly by name</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/functions/add-miles-target">17. I see the target</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/functions/flights-condition">18. How many flights?</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/functions/flights-class-condition">19. Let’s clean up a little</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/functions/which-is-faster">20. Who is faster?</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/functions/add-array">21. Saving up for a trip around the world</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/functions/summary-2">22. Summary of “Functions”. Part 2</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/functions/challenge-calculate-deposit">23. Eighth program: “Money makes money”</a></li><li class="main-nav__course-contents-item"><a href="/courses/javascript-programming/functions/challenge-deposits-condition">24. Ninth program: “The Eternal Question”</a></li></ul></div></div><a class="main-nav__course-item main-nav__course-button main-nav__course-button--next" href="/courses/javascript-programming/functions/first-function">Helper function</a></div><ul class="main-nav__list main-nav__list--user main-nav__list--user-guest"><li class="main-nav__item" itemprop="name"><a class="main-nav__link" href="/signup?redirect_url=%2Fcourses%2Fjavascript-programming%2Ffunctions%2Fkamchatka-miles" title="Sign up" data-modal="open" data-value="register" itemprop="url"><span class="main-nav__icon" aria-hidden="true"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#user"></use></svg></span>Sign up</a></li><li class="main-nav__item main-nav__item--login" itemprop="name"><a class="main-nav__link" href="/login?redirect_url=%2Fcourses%2Fjavascript-programming%2Ffunctions%2Fkamchatka-miles" title="Log in" data-modal="open" data-value="login" itemprop="url"><span class="main-nav__icon" 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3.896.106.328.5.46.78.26.273.192.653.06.745-.26.735-2.66-1.6-5.728-3.766-7.16z" fill="#F1662A"/></svg></span><p class="course-loading-overlay__message"><b class="course-loading-overlay__message-title">Loading…</b><br><span class="course-loading-overlay__message-text">Everything will be ready in few seconds</span></p></div></div><div class="course-layout__sidebar course-theory"><div class="course-theory__inner course-theory__inner--left-stub"><button class="course-theory__close icon-close icon-close--light" type="button">Close</button><ul class="course-tabs course-tabs--non-interactive course-layout__theory-heading js--theory-tabs"><li class="course-tabs__item course-tabs__item--external course-tab course-tab--centered"><span class="course-tab__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/courses.svg#icon-theory"></use></svg></span><span class="course-tab__title">Theory</span></li><li class="course-tabs__item course-tabs__item--internal course-tab course-tab--centered course-tab--active js--theory-tab__theory"><span class="course-tab__icon"><svg aria-hidden="true"><use xlink:href="/img/sprites/courses.svg#icon-theory"></use></svg></span><span class="course-tab__title">Theory</span></li><li class="course-tabs__item course-tabs__item--internal course-tab course-tab--centered js--theory-tab__comments"><span class="course-tab__icon"><svg aria-hidden="true" style="width: 16px; height: 16px; fill: #2e2c9c;"><use xlink:href="/img/sprites/up.svg#comment"></use></svg></span><span class="course-tab__title">Comments</span></li></ul><section class="course-theory__content"><div class="js--theory-pane__theory course-theory__content-inner"><h1 class="course-theory__content-heading">Going the second circle</h1><div class="course-theory__content-text"><blockquote><p>Meow! Thanks for the calculation!</p><p>When I come back, I want to fly to Kamchatka, eat some rainbow trout and check out the volcanoes.</p><p>How many miles will I get? I’ll have to fly for 9 hours, so this kind of sacrifice should be rewarded!</p></blockquote><p>Your gut feeling was not lying! Muffin is planning yet another trip, but you got everything ready: you got the formula, and the condition for long-distance flights is taken into account.</p><p>Let’s add the mile calculation for the flight to Kamchatka.</p><p>To do this, we will have to repeat all the calculation steps for the first trip. The algorithm is the same, only the distance is different, and maybe the percentage. Let’s check!</p><p>As you can see, the result of our calculation isn’t a round number. There is no mistake, this is how JavaScript works. We will discuss why this happens in further courses. And we will round the numbers a little later.</p></div></div><div class="js--theory-pane__comments hidden course-theory__content-inner"><div class="course-theory__content-text"><h2 class="course-theory__content-heading">Comments</h2><div id="disqus_thread"></div><script>
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var percent = 0.25;
var distance = 4125;
if (distance > 10500) {
percent = 0.35;
}
var miles = distance * percent;
console.log('We’ll get ' + miles + ' miles for the flight to Irkutsk');
// Paste the code after this comment
</div></div></div><div class="course-editor-controls"><button class="course-editor-controls__item course-editor-controls__item--answer" type="button">Show the answer</button></div><div class="js--feedback course-unhappy"><button class="js--feedback-btn course-unhappy__button" type="button"><span class="sr-only">Complain</span><svg aria-hidden="true"><use xlink:href="/img/sprites/courses.svg#unhappy"></use></svg></button><div class="js--feedback-modal course-unhappy__modal course-unhappy__modal--step-one"><form method="POST" action="/courses/javascript-programming/functions/kamchatka-miles/signal" class="course-unhappy__form form"><input type="hidden" name="csrf_name" value="csrf69aec35b5e7f3"><input type="hidden" name="csrf_value" value="e3036d33bb35a661f244944674ca1024"><p class="course-unhappy__text">What didn’t you like in this task?</p><div class="course-unhappy__slide"><div class="course-unhappy__wrap"><div class="course-unhappy__list"><label class="checkbox checkbox--small"><input class="checkbox__input" name="problems" value="1" type="checkbox"><span class="checkbox__text">The code check doesn’t work</span></label><label class="checkbox checkbox--small"><input class="checkbox__input" name="problems" value="2" type="checkbox"><span class="checkbox__text">The task is too difficult</span></label><label class="checkbox checkbox--small"><input class="checkbox__input" name="problems" value="3" type="checkbox"><span class="checkbox__text">The theory is hard to understand</span></label><label class="checkbox checkbox--small"><input class="js--feedback-other-checkbox checkbox__input" name="problems" value="0" type="checkbox"><span class="checkbox__text">Other (will write below)</span></label></div><div class="course-unhappy__message"><label class="sr-only" for="id-message">Другое (сейчас напишу)</label><textarea class="field field--area" id="id-message" name="message" placeholder="For example, a typo in the word «heading»"></textarea></div></div></div><button class="course-unhappy__control course-unhappy__control--prev" type="button"><span class="sr-only">Prev</span><svg aria-hidden="true"><use xlink:href="/img/sprites/landings.svg#arrow"></use></svg></button><button class="course-unhappy__control course-unhappy__control--next" type="button" disabled><span class="sr-only">Next</span><svg aria-hidden="true"><use xlink:href="/img/sprites/landings.svg#arrow"></use></svg></button><button class="js--submit-btn button" disabled>Submit</button></form><p class="course-unhappy__result hidden">Thanks! We’ll fix everything at once!</p></div></div></div><div class="course-layout__column course-layout__column--right"><span class="course-separator-control"><svg aria-hidden="true"><use xlink:href="/img/sprites/courses.svg#icon-arrows-separator"></use></svg></span><div class="course-browser"><div class="course-browser__menu"><span class="course-browser__menu-item course-browser__address"><span class="course-browser__menu-item-inner">Console</span></span><button class="js--autorun course-browser__menu-item course-browser__menu-button course-browser__menu-button--text-with-icon course-browser__menu-button--autorun course-browser__menu-button--autorun-on" title="Autorun" type="button"><span class="course-browser__menu-item-inner"><svg aria-hidden="true"><use xlink:href="/img/sprites/courses.svg#icon-autorun"></use></svg>
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</span></button><button class="course-browser__menu-item course-browser__menu-button course-browser__menu-button--expand" type="button"><svg xmlns="http://www.w3.org/2000/svg" width="11" height="11" viewBox="0 0 11 11"><path d="M1.375 5.125v4.5h4.5m3.75-3.75v-4.5h-4.5" fill="none" fill-rule="evenodd" stroke="currentColor"></path></svg></button></div><div class="course-browser__notification js--browser-change-heading hidden"><p class="course-browser__notification-text">The code has changed, click “Run” or turn autorun on.</p><button class="course-browser__notification-button course-browser__notification-button--play js--close" type="button"><svg aria-hidden="true"><use xlink:href="/img/sprites/courses.svg#icon-play"></use></svg>
Run</button></div><div class="course-browser__content"><div class="console js--console"><h2 class="sr-only">Result</h2><div class="console__content js--console__content"></div></div></div><div class="course-goals js--goals"><div class="course-goals__heading"><span class="course-goals__heading-title"><span class="course-goals__count-label">Goals</span><span class="course-goals__count">completed</span></span><button class="course-goals__button course-goals__button--expand js--goals__expand" type="button"><svg aria-hidden="true"><use xlink:href="/img/sprites/courses.svg#icon-collapse"></use></svg></button><a class="course-goals__button course-goals__button--next button button--green button--without-border hidden" href="/courses/javascript-programming/functions/first-function" title="Helper function"><svg aria-hidden="true"><use xlink:href="/img/sprites/courses.svg#arrow-white--mini"></use></svg></a></div><div class="course-goals__content"><ol class="course-goals__list"><li class="course-goals__list-item">Copy the entire code written before and paste it into the editor after the existing code.</li><li class="course-goals__list-item">Change the second message in the console to <code>'We’ll get ' + miles + ' miles for the flight to Kamchatka'</code><span class="mark">.</span></li><li class="course-goals__list-item">Set value <code>11000</code> to the second variable <code>distance</code><span class="mark">.</span></li></ol></div></div></div></div></article></div><div class="course-interface__overlay course-interface__overlay--active"></div></main><script
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