Appending an array with a for loop

Question

I'm trying to write a function to append an array with a for loop. The data I'm trying to append is in a JSON repsonse. However, I keep getting x10 Array[] in the web console instead of one array with all the data. When I run console.log(dates[0]) I get returned in the web console "undefined". This tells me the data isn't even making it into the array. When I run console.log(time) I return x10 peices of data from the JSON I want but of course its not in the array. Any ideas? Thanks.

function mostRecent(time) {
    var dates=[];
    for (var i = 0; i < time.length; i++) {
        dates.push(dates[i]);
    }
    return console.log(dates);
    }

It's dates.push(time[i])

kind user
– kind user

2019-11-18 00:42:53 +00:00
Commented Nov 18, 2019 at 0:42 — kind user
– kind user, Commented Nov 18, 2019 at 0:42

kind user · Accepted Answer · 2019-11-18 00:51:32Z

3

You are pushing dates[i] with every loop cycle. And since dates array keeps being empty, you are actually pushing undefined.

Just replace dates.push(dates[i]) with dates.push(time[i]).

Note: You should return dates instead of console.log.

edited Nov 18, 2019 at 0:51

answered Nov 18, 2019 at 0:46

kind user

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2 Comments

prime90 Over a year ago

Hmmm...I'm still receiving 10 undefined repeats in the console when I return console.log(dates[0]).

kind user Over a year ago

@prime90 Just return dates instead of console.log

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