Update Array In One Function By Another Function

I have small problem and I am stuck with it for days without any solution. So I have a function that has an array,

function arrjoin( )
{
var a = new Array (1,1,1,1,1,1,0,0,0,0);
var c = a.join("~");
return (c);
}

I have another function that call the arrjoin(). But before doing so, I get a value from an input field based on which i need to update the array in arrjoin() and save that as the new array(I mean same array but with the update value).

[Code]....

This is my current function. In this before I call joinarr( ) I need to update the array a in joinarr( ) with the value=index, that I am fetching here and save the array. (Haven't implemented yet) This process keeps on occurring every time a index value is generated. Thus in the next iteration the array a in arrjoin( ) show not be array show here but the array with the updates values. I am eventually transferring the array to server side to do some processing based on current value of the array.