Javascript understanding array

Question

I was reading about understanding arrays in another link, but still stuck..

understanding nested arrays in Javascript

The problem is, i have sample code that i want to learn, but when i did in different style(cz different situation), i got stuck. The sample problem is like : (uses f12 in browser to check console)

It looks different, but when i check inside it's the same..

Both arrays are created in different ways, the first one is (i want to make this) :

var datas = [
    ['Bondi Beach', -33.890542, 151.274856, 4],
    ['Coogee Beach', -33.923036, 151.259052, 5],
    ['Cronulla Beach', -34.028249, 151.157507, 3],
    ['Manly Beach', -33.80010128657071, 151.28747820854187, 2],
    ['Maroubra Beach', -33.950198, 151.259302, 1]
];

And the other array (my own method) :

mydatas=[];

and how i add this elements to this array is:

mydatas.push(newArr);

And my half code to compare it : (many other thing to do, but didnt connect to this problem)

var datas = [
    ['Bondi Beach', -33.890542, 151.274856, 4],
    ['Coogee Beach', -33.923036, 151.259052, 5],
    ['Cronulla Beach', -34.028249, 151.157507, 3],
    ['Manly Beach', -33.80010128657071, 151.28747820854187, 2],
    ['Maroubra Beach', -33.950198, 151.259302, 1]
];
var mydatas=[];
for(i=0;i<Oldarry.length;i++){
    //other proccess
    newArr = [address, latlng.lat(), latlng.lng(), (index+1)];
    mydatas.push(newArr);
}

console.log(datas);
console.log(datas[0]);
console.log(mydatas);
console.log(mydatas[0]);

The result is :

My question is how I could create the first array (datas). Thanks for any help.
*The strange in mydatas i can't access first array, but in second picture if i click in console there are 7 array inside..

my full code without api key: https://jsfiddle.net/n425qxgy/

my real input is excel spreadsheet, can i ask, how i can upload it ? thq for reply.. — Budi Mulyo
– Budi Mulyo, Commented Nov 26, 2018 at 8:19
Make a minimal reproducible example using csv for example. var data = `a,b,c,d\ne,f,g,h` — mplungjan
– mplungjan, Commented Nov 26, 2018 at 8:40
thanks, i need really patient, to solve my problem with creating my model question.. little pain.. hehe — Budi Mulyo
– Budi Mulyo, Commented Nov 26, 2018 at 8:50
when creating the model question, i understand the problem is in my array, and after some search, i found that is real problem, check the accept answer, btw thanks for help.. — Budi Mulyo
– Budi Mulyo, Commented Nov 26, 2018 at 9:33

shaghayegh sheykholeslami · Accepted Answer · 2018-11-26 07:48:47Z

2

I couldn't understand what exactly you want? I hope this could help you

var datas = [
    ['Bondi Beach', -33.890542, 151.274856, 4],
    ['Coogee Beach', -33.923036, 151.259052, 5],
    ['Cronulla Beach', -34.028249, 151.157507, 3],
    ['Manly Beach', -33.80010128657071, 151.28747820854187, 2],
    ['Maroubra Beach', -33.950198, 151.259302, 1]
];
var mydatas=[];
for(i=0;i<datas.length;i++){
mydatas.push(datas[i]);
}
console.log(datas);
console.log(datas[0]);
console.log(mydatas);
console.log(mydatas[0]);

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

answered Nov 26, 2018 at 7:48

shaghayegh sheykholeslami

3101 silver badge11 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

Budi Mulyo Over a year ago

yeah that's is my code, but i got different result, check my experiment..

Budi Mulyo Over a year ago

btw, can you help me, what i must add to more easy to understand in my question,, thq for help..

shaghayegh sheykholeslami Over a year ago

you could use snippet for more detail ,edit your question and add snippet

Chris Mitchell · Accepted Answer · 2018-11-26 07:48:58Z

0

Have you tried doing the same tests in Chrome or Firefox? I am guessing you are using IE/Edge since you pressed F12. It could be a funny issue with the MS console which is treating adding to an array differently....but the same.

answered Nov 26, 2018 at 7:48

Chris Mitchell

685 bronze badges

1 Comment

Budi Mulyo Over a year ago

yep this is my problem, stackoverflow.com/questions/24175017/… bacause my other proccess is more longer than next code, js execute my next progress meanwhile other proccess still unfinished..

Collectives™ on Stack Overflow

Javascript understanding array

2 Answers 2

3 Comments

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

3 Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related