![]() Personal blog posts that are relevant to the subreddit's stated subject matter don't need prior approval (and are encouraged!). If you want to post something self-promotional, please message the mods first. Titles that begin with "hey guys" will be removed. If you're in doubt, message the mods first. ![]() ‘Two-hundred thousand lines,’ said Tzu-li, ‘not counting comments’ Tzu-ssu responded, ‘Pssh, mine is almost a million lines already.’ Master Yuan-Ma said, ‘My best program has five hundred lines. The following are not allowed: Requests for subscribers, asking for "test users" for your new JS course, offering paid mentorships, and/or premium courses. Tzu-li and Tzu-ssu were boasting about the size of their latest programs. If you’re asking for help, include enough information for others to recreate your problem. With a nod to practicality, questions and posts about HTML, CSS, and web developer tools are also encouraged. Everyone should feel comfortable asking any and all JavaScript questions they have here. So the range function will be called first, and it will return the array which is going to be used by the sum function.This subreddit is a place for people to learn JavaScript together. Lastly, we are using console.log with both function calls, here we are passing range(1,10) as an argument in the sum function call. ![]() So we will understand this problem and also solve the problem with very basic logic. This problem is in chapter 4 of Eloquent JavaScript book which very famous for JS of course. Now we have a variable total with initial 0 value, and again we used while loop till the array’s length in which we are just poping the array and adding in the total variable, and we are returning total. Share 4 Min Read In this article, we will talk about a JavaScript problem which is Range and Sum Function in JavaScript. Now let’s create another function named sum to get the addition of the array’s values, here we have passed the array as a parameter in the function. 2 Answers Sorted by: 0 var events journal entry.events you are getting the events object from the object at index entry in the array journal and assigning it to a temporary variable called events. In this we are just pushing the value of cnt in the array and incremented cnt, lastly we just return this array. We used while loop, we can also go with for loop, here loop will run till cnt will be less or equal to end. ![]() So here we have used a loop so that we can assign all the values in an array. It’s an arrow function.Your test parameter is invoked as a function, so passing it this particular arrow function lets filter know which members to retain in the filtered array by checking the truthiness of each element’s living property. Okay, so now let’s make a function range where we will create an array, and we assigned the value of start in the variable named cnt. Run the previous program and see whether it does indeed return 55. Next, write a sum function that takes an array of numbers and returns the sum of these numbers. Write a range function that takes two arguments, start and end, and returns an array containing all the numbers from start up to (and including) end. The introduction of this book alluded to the following as a nice way to compute the sum of a range of numbers: console.log(sum(range(1, 10))) Range and Sum Function Problem Range and Sum Function Solution Range and Sum Function Solution: Alternative You may also like: Range and Sum Function Problem
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