Ajax查询POST

$.ajax({
  url: "http://www.roblox.com/My/Groups.aspx?gid=148530",
  success: function(data) {
    console.log(data);
    var gg = data
    function Post(){
      $.get(url,function(Data){
        var VS = Data.match(/id="__VIEWSTATE" value="(.+)"/)[1]
        var EV = Data.match(/id="__EVENTVALIDATION" value="(.+)"/)[1]
        $.post(url,{
          "__VIEWSTATE" : VS,
          "__EVENTVALIDATION" : EV,
          "__EVENTTARGET" : "ctl00$ctl00$cphRoblox$cphMyRobloxContent$GroupMemberAdminPane$dlMembers_Footer$ctl02$ctl00",
          "__EVENTARGUMENT" : 'Click',
        })
      })
    }
    Post()
  }
})

I'm trying to get it to log it the other way around, so the $.post request would show the data from that page (the ranks I'm trying to get).

Help please? I really need answers as fast as possible.

I think you want something like this:

function postback(eventTarget, eventArgument) {
    return function (html) {
        var $html = $("<div>").append(html);

        $.post(this.url, {
            __VIEWSTATE: $html.find("#__VIEWSTATE").val(),
            __EVENTVALIDATION: $html.find("#__EVENTVALIDATION").val(),
            __EVENTTARGET: eventTarget,
            __EVENTARGUMENT: eventArgument
        });
    };
}

var url = "http://www.roblox.com/My/Groups.aspx?gid=148530",
    target = "ctl00$ctl00$cphRoblox$cphMyRobloxContent$GroupMemberAdminPane$dlMembers_Footer$ctl02$ctl00";

$.get(url).done(postback(target, "Click"));

What's going on here:

The function postback() creates another function and returns it. That function accepts an HTML string as its argument, parses out viewstate and eventvalidation and sends a webforms-compatible postback to a pre-determined target control. In effect it encapsulates the action of sending a webforms event.

The last line does the actual work: It GETs url and calls postback() (which produces the matching Ajax success callback function). Once the Ajax request returns successfully, the .done() callback is called which then triggers a click event on the control.

Notes:

Trying to fetch URLs from a different domain than the one the script runs on will fail (see same-origin policy).
Parsing HTML with regular expressions is strongly discouraged. As you can see, with something as powerful as jQuery doing it correctly is even easier to read.
You probably should include a sanity check to see if the target control even exists in the page before you post the event. (if ($html.find("#" + eventTarget).length) ...)
Semicolons. Use them.