CODEWITHSUNDEEP
jquery
user2065483
user2065483

Reputation: 1225

How can I apply the variable variables concept to jQuery in this particular situation

I saw some posts about jQuery's lack of variable variables (like php) and I was wondering how do I handle a situation like this? When I want to use the variable "i" to select an array.

var arr1_1 = ["1","1","1","0","0","0","0","0","0"];
var arr1_2 = ["1","0","0","0","1","0","0","0","1"];
var arr1_3 = ["0","0","0","1","1","1","0","0","0"];
var arr1_4 = ["0","0","0","0","0","0","1","1","1"];
var arr1_5 = ["0","0","1","0","1","0","1","0","0"];
var arr1_6 = ["1","0","0","1","0","0","1","0","0"];
var arr1_7 = ["0","1","0","0","1","0","0","1","0"];
var arr1_8 = ["0","0","1","0","0","1","0","0","1"];

for(var i=0; i <= 9; i++){
    console.log(
        arr1_"here is the i";
    )
}

Upvotes: 1

Views: 51

Answers (4)

Pierluc SS
Pierluc SS

Reputation: 3176

I believe that you can achieve what you are trying to do with the eval function

for(var i=0; i <= 9; i++){
    console.log(
        'here is the arr1_'+i+': ' + eval('arr1_'+i);
    )
}

Upvotes: 1

n8wrl
n8wrl

Reputation: 19765

I would go with an array of arrays:

var arr = [
    [] /* 0th index - confused about your example - start with 1? */
    ,["1","1","1","0","0","0","0","0","0"]
    ,["1","0","0","0","1","0","0","0","1"]
    ,["0","0","0","1","1","1","0","0","0"]
    ,["0","0","0","0","0","0","1","1","1"]
    ,["0","0","1","0","1","0","1","0","0"]
    ,["1","0","0","1","0","0","1","0","0"]
    ,["0","1","0","0","1","0","0","1","0"]
    ,["0","0","1","0","0","1","0","0","1"]
];

for(var i=0; i <= 9; i++) {
    console.log(arr[i]);
}

You can then access individual members

arr[row][col];

Upvotes: 0

Sushanth --
Sushanth --

Reputation: 55740

It is a better idea to store this as a hash, as your data will be structured.

var data = {
    "arr1_1": ["1", "1", "1", "0", "0", "0", "0", "0", "0"],
    "arr1_2": ["1", "0", "0", "0", "1", "0", "0", "0", "1"],
    "arr1_3": ["0", "0", "0", "1", "1", "1", "0", "0", "0"],
    "arr1_4": ["0", "0", "0", "0", "0", "0", "1", "1", "1"],
    "arr1_5": ["0", "0", "1", "0", "1", "0", "1", "0", "0"],
    "arr1_6": ["1", "0", "0", "1", "0", "0", "1", "0", "0"],
    "arr1_7": ["0", "1", "0", "0", "1", "0", "0", "1", "0"],
    "arr1_8": ["0", "0", "1", "0", "0", "1", "0", "0", "1"],
}

for(var i=0; i <= 9; i++){
   console.log(
       data["arr1_" + i]
   )
}

Check Fiddle

Upvotes: 2

Lochemage
Lochemage

Reputation: 3974

You can retrieve the variable by the bracket operator in JavaScript:

for(var i=0; i <= 9; i++) {
  var varName = 'arr1_'+(i+1);
  console.log(window[varName]);
}

Assuming that your array variables are within the 'window' scope.

Upvotes: 0

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