Facebook delete group members automatically

// first go to https://www.facebook.com/groups/XXXX/members with google chrome
// then open tools - and paste this in the javascript console

deleteAll = [];
deleteAll.elms = [];
deleteAll.canClick = function (el) {
return (typeof el != 'undefined') && (typeof el.click != 'undefined');
}
deleteAll.load = function() {
deleteAll.elms = document.getElementsByClassName("uiPopoverButton _p uiButton uiButtonSuppressed uiButtonNoText");
if (i < deleteAll.elms.length - 5 && !more[0].hasChildNodes()) { setTimeout(deleteAll.getMore, 1000);
} else { setTimeout(deleteAll.go, 2000);
} }
deleteAll.getMore = function() { more = document.getElementsByClassName("pam uiBoxLightblue uiMorePagerPrimary");
if (typeof more != 'undefined' &&
deleteAll.canClick(more[0])) { more[0].click(); setTimeout(deleteAll.load, 2000);
} else { setTimeout(deleteAll.load, 100);
} }
deleteAll.go = function() {
try { deleteAll.doClick(1);
} catch(e) {
setTimeout(deleteAll.load, 1000);
} finally { setTimeout(deleteAll.load, 500000);
} }
deleteAll.doClick = function(i) { deleteAll.elms[i].click(); setTimeout(function(){
deleteAll.doClick2(i)}, 1000); }
deleteAll.doClick2 = function(i) { document.getElementsByClassName("_54nc")[1].click() setTimeout(function(){deleteAll.confirm(i)}, 1000); }
deleteAll.confirm = function (i) { remove_but = document.getElementsByClassName("_42ft _42fu layerConfirm uiOverlayButton selected _42g- _42gy")[0];
more = document.getElementsByClassName("pam uiBoxLightblue uiMorePagerPrimary");
if ((i < deleteAll.elms.length - 5 || !more[0].hasChildNodes()) &&
deleteAll.canClick(remove_but) && remove_but.value == "1") { remove_but.click(); setTimeout(function(){
deleteAll.confirm2(i)}, 1000); } else { setTimeout(deleteAll.getMore, 2000); } }
deleteAll.confirm2 = function(i) { node = document.getElementsByClassName('uiContextualLayerPositioner uiLayer hidden_elem')[0]; node.parentNode.removeChild(node); setTimeout(function(){deleteAll.doClick(i)}, 1000); }

deleteAll.load();