AJAX call in for loop won't return values to correct array positions

Question

I need to get a range of pages using AJAX and put them into an array, where their given place in the array is equal to the i of a for loop (it\'s a caching-like

Answer 1

You need a closure:

var bongo = [];
for (i = 0; i < 10; i++)
{

  (function(i)
    {
      jQuery.ajax(
        {
          type: "GET",
          url: "http://localhost",
          data: queryString,
          success: function(request) { bongo[i] = request } 
        });  
    })(i);
}

Loops are the #1 place where inline functions stump people. The bongo[i] = result isn't called until later. The value of i at that time is different (most likely 11). If you want to "trap" or "capture" the current value of i, you need to create a new scope. The only way to do that in javascript is with another function.