How to add one array data into multiple dynamic arrays

Question

I have one array in javascript like

var arr = ["aa","bb","cc", "dd"];

and now I want to store these values into multiple arrays dynamically like

var arr1 = ["aa"];
var arr2 = ["bb"];
var arr3 = ["cc"];
var arr4 = ["dd"];

Here the as per the size of the "arr" array I need to create dynamic arrays to store those values. For example in "arr" I have 4 values then I need to create 4 dynamic arrays to store 4 values.

I dont have any idea how to achieve this any help?

• home: 1) Is it about Java or JavaScript? 2) You know how to accept answers?
• StepTNT: Seems Javascript, as I never saw var in Java.
• Nithin: It is in javascript only not in java

Answer 1

The only way I can think of doing exactly what you are asking for is with eval. I don't suggest using it so I put together an object, which is close and preferred.

http://jsfiddle.net/P9SSA/1/

var myOneArray = ["a","b","c","d"];
var varPrefix = "arr";
var myObj = {};
for (var i = 1; i <= myOneArray.length; i++) {
 eval(varPrefix + i + '=["' + myOneArray[i-1] + '"]');
 myObj[varPrefix + i] = [myOneArray[i-1]];
}
document.write(arr1);
document.write("<br>");
document.write(myObj.arr3);

Answer 2

In global scope you can do:

arr.forEach( function( value, index ) {
 window["arr"+(index+1)] = [value];
});

Inside arbitrary scope, this is only possible under non-strict eval:

var arr = ["aa","bb","cc", "dd"];
eval( arr.map( function( value,index) {
 value = typeof value == "string" ? '"' + value + '"' : value;
 return 'var arr'+(index+1)+' = ['+value+']';
}).join(";") + ";" );

Evaluates the following code:

var arr1 = ["aa"];
var arr2 = ["bb"];
var arr3 = ["cc"];
var arr4 = ["dd"];

forEach shim
map shim

• Salman Arshad: Why not use for(var i = ...)? Hint: MSIE.
• Esailija: @SalmanA because it allows the answer to be more meat and less boilerplate.
• Nithin: @Esailija Thanks for your reply. i had tried with your approach it doesn't worked for me. can you provide some more code

Answer 3

var arrayOfArrays = [];
for (var i = 0; i < arr.length; i++) {
 arrayOfArrays[i] = [];
 arrayOfArrays[i].push(arr[i]); 
}