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Chris Nelson
4,978 PointsJavascript arrays - how to put placeholders into arrays
Javascript Stage 4 - Arrays Callenge 2
says:
Set the 'guides' that has placeholders for 42 elements but has no values stored in it.
var guides = [];
The video doesn't show how to put a "placeholder" into an array. How do you do that?
thanks in advance
var mixture = ['string1', 'string2', 'string3', 1, 2, false];
var guides = [];
2 Answers
Ken Alger
Treehouse TeacherChris;
This should work:
var guides = new Array(42);
Hope it helps,
Ken
Hugo Paz
15,622 PointsHi Chris,
You just need to create an array with 42 positions.
var guides = new Array(42);
Chris Nelson
4,978 PointsThanks, Hugo. I got thrown by wording. "placeholder" and "positions" were never mentioned in the video. "length" to me always referred to "number of characters".
Chris Nelson
4,978 PointsChris Nelson
4,978 PointsThanks, Ken. It didn't work until I capitalized the letter "A" in "Array". The challenge's wording doesn't make sense. The video makes no mention of "placeholder". When the video goes over "new Array" - it explains that the number put in parentheses sets the "length" of the variable. To me the "length" means how many characters - no placeholders.
Thanks anyway for your help.