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Vic Mercier
3,276 Pointsaverage calculator
Is someone able to do an average calculator with for loop an array?If yes show me how.
4 Answers
Vic Mercier
3,276 Pointsvar numbers = [1,2,3]; var total; for(var i = 0; i < numbers.length;i += 1){ total += numbers[i]; } var average = total/numbers.length; alert(average); Is it good.If not show me your solution.
Steven Parker
231,275 PointsGive this a try yourself.
If you combine what you just learned about loops and arrays with what you did in JavaScript Basics, you should be able to at least give it a try.
Vic Mercier
3,276 PointsYes I know but I finished the array loop and object and i am not able
Steven Parker
231,275 PointsYou might use a technique from the courses: start with breaking the project down into separate tasks, define the tasks with comments, and then fill in code for each. Here's a sample:
// construct an array with the proper contents
// create a variable to hold a total
// make a loop that will run once for each item in the array
// inside the loop, add each item to the total
// after the loop, divide the total by the number of items and store that in a new variable
// finally, pick a way to display the average. alert? log? write into the document?
Vic Mercier
3,276 Pointsvar numbers = [1,2,3]; var total; for(var i = 0; i < numbers.lenght; i +=1){ total += numbers[i];
} Am I well started? And I will divide the total by numbers.lenght
Steven Parker
231,275 PointsYou wrote "lenght" instead of "length", but otherwise it looks like you got the first 4 items there. Just two more and you'll have it functioning.
Vic Mercier
3,276 PointsShould I use a for loop?
Steven Parker
231,275 PointsSteven Parker
231,275 PointsThat's good except you forgot to initialize your total.
So instead of: "
var total;", you might write: "var total = 0;"