Ajax跨域请求

我正在尝试使用ajax请求从我的本地域重定向到Paypal结帐域.我还允许跨域设置为true.但是我收到了

I am trying to redirect from my local domain to Paypal checkout domain using ajax request.I am also allowing cross domain to true.but I am getting the error that

  No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin      'http://localhost' is therefore not allowed access. 

我的代码是:

$.ajax({
            type: 'GET',
            url: url,
            processData: false,
            crossDomain: true,
            contentType: "application/json",
            jsonp: false,
            success: function() {
                alert("Success");
            },
            error: function() {
                alert("failure");
            }
    });