Javascript how can I create an object with numbers in sequence

Question

I'm looking for the best way to create an object like this in javascript:

  values: {
    0: { 0: 0, 1: 0, …, 59: 0 },
    1: { 0: 0, 1: 0, …, 59: 0 },
    …,
    58: { 0: 0, 1: 0, …, 59: 0 },
    59: { 0: 0, 1: 0, …, 59: 0 }
  }

If everything is 0-based, have you considered nested arrays instead? — Rhumborl
– Rhumborl, Commented Dec 11, 2014 at 17:12
I'm looking for... - Yeah, you're probably not going to just find it... You pretty much have to develop it... — LcSalazar
– LcSalazar, Commented Dec 11, 2014 at 17:15
nested for loops or two loops. First create object, second loop, clone, and insert — epascarello
– epascarello, Commented Dec 11, 2014 at 17:17
Sorry, I voted the first one helped me. They are all valid answers for me. Thanks Edit Yeah, probably I should vote yours for clarity — michelem
– michelem, Commented Dec 11, 2014 at 17:29

score 1 · Accepted Answer · 2014-12-11 17:31:13Z

1

var values = {};

for (var i = 0; i < 60; ++i) {
    values[i] = {};
    for (var j = 0; j < 60; ++j)
        values[i][j] = 0;
}

console.log(values);

That what you want?

edited Dec 11, 2014 at 17:31

answered Dec 11, 2014 at 17:24

user2570380

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Comments

KooiInc · Accepted Answer · 2014-12-13 14:21:33Z

1

Just for fun: a functional approach:

function range(n, cb) {
   cb = cb || function (v, i) { this[i] = 0; };
   var _ = {};
   Array(n).join()
    .split(',')
    .map( cb, _);
    return _;
}

// create someObj using range
var someObj = range(10, function (v, i) { this[i] = range(10); });

// display someObj
document.querySelector('#result').innerHTML = 
   '<code>'+
   JSON.stringify(someObj)
   .split('},')
   .join('},<br>&nbsp;')  
   + '</code>';

<div id="result"></div>

edited Dec 13, 2014 at 14:21

answered Dec 11, 2014 at 17:59

KooiInc

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Comments

Marius Stănescu · Accepted Answer · 2014-12-11 17:33:36Z

0

You can try this:

var values = {}, temp = {}, i;
for (i = 0; i <= 59; i++)
{
    temp[i] = 0;
}
for (i = 0; i <= 59; i++)
{
    values[i] = temp;
}

Link to jsFiddle here.

edited Dec 11, 2014 at 17:33

answered Dec 11, 2014 at 17:20

Marius Stănescu

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Comments

user2058320 · Accepted Answer · 2014-12-11 17:42:00Z

0

check this

var obj = {};
var n = 60;
for(var i=0;i<n;i++){
 obj[i] = {}
 for(var j=0;j<n;j++)
   obj[i][j] = 0;
 }

obj is your values

edited Dec 11, 2014 at 17:42

answered Dec 11, 2014 at 17:27

user2058320

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