CODEWITHSUNDEEP
javascriptarrays
Bwyss
Bwyss

Reputation: 1834

programaticly assign objects to an array

I have an array that I am adding objects to. I would like to control the number of objects that are added to the array using a number. 

for (var i = 0; i < numberOfCountries; i++) {
    chartArray[i] = obj[i];
}

I am trying to get this: 

    chartArray[0] = obj0;
    chartArray[1] = obj1;
    chartArray[2] = obj2;
    chartArray[3] = obj3;
    chartArray[4] = obj4;
    chartArray[5] = obj5;

Upvotes: 0

Views: 68

Answers (5)

vogomatix
vogomatix

Reputation: 5041

I really get the feeling you are asking the wrong question (see https://meta.stackexchange.com/questions/66377/what-is-the-xy-problem). The objects you refer to should be in an array in the first place

Upvotes: 0

Frogmouth
Frogmouth

Reputation: 1818

Assume that the index of for loop is 0:

You have this code:

chartArray[0] = obj[0];

in this code you try to push an elemento of an array named "obj" with index 0 to your chartArray in index 0.

to do what you want you must resolve the name of the object by adding a sequential number to the word "obj" to do so you can use eval().

Try:

for (var i = 0; i < numberOfCountries; i++) {
   //for debug uncomment nexr line 
   //console.log("name:","obj"+i,"eval:",eval("obj"+i));
   if(typeof eval("obj"+i) !== "undefined") return chartArray.push(eval("obj"+i));
}

if object named "obj"+i isn't defined the loop continue to next "Countrie" whitout add to your array.

bye.

Upvotes: 0

akaRem
akaRem

Reputation: 7618

May be you want this?

for (var i=0; i<numberOfCountries; i++) {
    chartArray.push(this["obj"+i]);
}

Upvotes: 1

CodingIntrigue
CodingIntrigue

Reputation: 78535

Assuming the obj variables are available at window scope:

for (var i=0; i<numberOfCountries; i++) {
    chartArray[i] = window["obj"+i];
}

Upvotes: 1

Shryme
Shryme

Reputation: 1570

you can do this:

var char = new Array();
for (var i = 0; i < number; i++)
{
    char.push(obj[i]);
}

Upvotes: -1

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