Using array values as array names

Question

I am trying to pass an array value into a function as an arg and then use it's value to reference another array. I know that sounds a bit complicated but I am doing it for a reason ;) I THINK that showProject thinks that project1 is a string as it returns only 'p' and ... Any help appreciated?

var projects = ["project1","project2"];
var project1 = ["image1","image2"];
var project2 = ["image1","image2"];
function showProject(arr){
 console.log(arr[0]);
}
//why isn't this showing image 1 in project 1 array?
showProject(projects[0]);

Fiddle> http://jsfiddle.net/4ryLT/

• Ted: smells like you need to use JSON :)
• Salman Arshad: Yes, you are passing the string "project1" to the function which correclty alerts "p". So what is the question?
• DontVoteMeDown: why isn't this showing image 1 in project 1 array? because project1 neither project2 are being used inside showProject().

Answer 1

This seems to be what you want:

jsFiddle

var project1 = ["image1","image2"];
var project2 = ["image1","image2"];
var projects = [project1,project2];
function showProject(arr){
 alert(arr[0]);
}
showProject(projects[0]);

Set arrays as elements of projects array.

• timo: My cookies, you took em! ='(

Answer 2

is var projects referring to the other two variables? If so, remove the "" and put them in a different order

var project1 = ["image1","image2"];
var project2 = ["image1","image2"];
var projects = [project1,project2];
function showProject(arr){
alert(arr[0]);
}
showProject(projects[0]);

http://jsfiddle.net/4ryLT/3/

Answer 3

var projects = ["project1","project2"];
var project1 = ["image1","image2"];
var project2 = ["image1","image2"];
function showProject(arr){
 console.log(eval(arr)[0]);
}
showProject(projects[0]);

Answer 4

I think you mean this

var projects = [];
projects["project1"] = ["image1","image2"];
projects["project2"] = ["image1","image2"];
function showProject(arr){
 alert(arr[0]);
}
showProject(projects["project1"]);

Answer 5

without change your logic:

var projects = ["project1","project2"];
var project1 = ["image1","image2"];
var project2 = ["image1","image2"];
function showProject(arr){
 console.log(eval(arr)[0]);
}
showProject(projects[0]);

byee

• Tibos: How is this different than @AlexanderNenkov's answer?
• Frogmouth: i see the @AlexanderNenkov after post. Because before my post the AlexanderNenkov answer was "unformatted". if you see i edit the answer and than i see that we write same code... your comment is useless.