Submit array param with jQuery ajax/load - asp.net-mvc

Question

public ActionResult DoSomething(string[] arr, bool someBool, int someInt) { }
trying to call the above method from jQuery:
var test = [];
test.push('dog');
test.push('cat');
$container.load('MyController/DoSomething',
{ 'arr[]': test, 'someBool': true, 'someInt': 1 },
function(response, status, xhr) {
// ...
});
the array paramater is null, other params are fine. What am I doing wrong?
Chrome developer tools shows form data being submitted as
arr%5B%5D%5B%5D:dog
arr%5B%5D%5B%5D:cat
someBool:true
someInt:1
not sure whats going on there but doesn't look right to me

Answer 1

If you are using jquery 1.4 you might need to set the traditional parameter to true in order to be compatible with the default model binder format in ASP.NET MVC:
var test = [];
test.push('dog');
test.push('cat');
$.ajax({
url: 'MyController/DoSomething',
type: 'GET',
traditional: true,
data: { arr: test, someBool: true, someInt: 1 },
success: function(result) {
$container.html(result);
}
});
or if you prefer the .load() method:
var data = { arr: test, someBool: true, someInt: 1 };
$container.load('MyController/DoSomething', $.param(data, true),
function(response, status, xhr) {
// ...
});

Answer 2

Just remove []
{ 'arr': test, 'someBool': true, 'someInt': 1 },
Posted values (checking with Firebug).
arr[] dog
arr[] cat
someBool true
someInt 1
Example on jsFiddle

Answer 3

can you see if this problem is similar to yours:
Passing an nested arrays to asp.net mvc using jQuery's $.ajax

Answer 4

Even i was facing error, in passing array from HTML page to aspx page.
my requirement was to load the aspx page in a DIV tag of the html page. on the page load i need to pass these JS array values to aspx page load.
i used below method.
$('#<divTagID>').load("Targetpage.aspx",{"Arr":JSArrValues});
In aspx page load event i can access this values as:
string results = Response["Arr[]"];
Thanks to JQuery API documentation enter link description here and stackoverflow