jQuery send string as POST parameters

I want to send a string as an ajax Post parameter.

The following code:

$.ajax({
   type: "POST",
   url: "http://nakolesah.ru/",
   data: 'foo=bar&ca$libri=no$libri',
   success: function(msg){
     alert('wow'+msg);
   }
});

Is not working. Why?

Try like this:

$.ajax({
    type: 'POST',
    // make sure you respect the same origin policy with this url:
    // http://en.wikipedia.org/wiki/Same_origin_policy
    url: 'http://nakolesah.ru/',
    data: { 
        'foo': 'bar', 
        'ca$libri': 'no$libri' // <-- the $ sign in the parameter name seems unusual, I would avoid it
    },
    success: function(msg){
        alert('wow' + msg);
    }
});

$.ajax({
    type: 'POST',    
    url:'http://nakolesah.ru/',
    data:'foo='+ bar+'&calibri='+ nolibri,
    success: function(msg){
        alert('wow' + msg);
    }
});

I see that they did not understand your question.

Answer is: add "traditional" parameter to your ajax call like this:

$.ajax({
  traditional: true,
  type: "POST",
  url: url,
  data: custom,
  success: ok,
  dataType: "json"
});

And it will work with parameters PASSED AS A STRING.

For a similar application I had to wrap my data object with JSON.stringify() like this:

data: JSON.stringify({ 
  'foo': 'bar', 
  'ca$libri': 'no$libri'
}),

The API was working with a REST client but couldn't get it to function with jquery ajax in the browser. stringify was the solution.

Not sure whether this is still actual.. just for future readers. If what you really want is to pass your parameters as part of the URL, you should probably use jQuery.param().