Can't return the response data using jQuery AJAX

I'm loading cross domain html page with jQuery AJAX.

My problem is to return or equal the response data (target's html code) .

var html = "";

get("http://google.com");

function get( url ){

    $.ajaxPrefilter( function (options) {
        if (options.crossDomain && jQuery.support.cors) {
            var http = (window.location.protocol === 'http:' ? 'http:' : 'https:');
            options.url = http + '//cors-anywhere.herokuapp.com/' + options.url;
        }
    });

    $.get(url,function (response) {

         // Here is the problem

     });    
}

In the $.get() method I tried to :

html = result ;

return result ;

Both tries didn't work.

Is there any similar way to 'export' the response data to a global scope var ?

P.S - I've tried to use a function with a parameter to return the response . It worked perfectly but that is not what I want at all.