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在自己主页的右上角设置中最后一项增加了一个“删除所有”的按钮，取消删除刷新网页即可
// ==UserScript==
// @name 新浪微博一键清空
// @namespace https://github.com/zszen
// @version 1.2
// @description 在自己主页的右上角设置中最后一项增加了一个“删除所有”的按钮，取消删除刷新网页即可
// @author Zszen John
// @require http://ajax.aspnetcdn.com/ajax/jquery/jquery-1.7.2.js
// @grant none
// @include https://weibo.com/*
// ==/UserScript==
(function(){
var menuLast1 = $(".gn_topmenulist.gn_topmenulist_set>ul");
var menuLast2 = $(".gn_set.S_line1");
var deleteAll1 = $("<li><a class='delete_all_weibo'>删除所有</a></li>");
var deleteAll2 = $('<div class="gn_set_list"><a class="delete_all_weibo"><em class="W_ficon ficon_set S_ficon">*</em></a></div>');
menuLast1.append(deleteAll1);
menuLast2.append(deleteAll2);
deleteAll1.click(deleteAllAfterConfirm);
deleteAll2.click(deleteAllAfterConfirm);
function deleteAllAfterConfirm(){
var mymessage=confirm("是否删除当前页面全部微博信息？");
if(mymessage==true){
window.setInterval(function (){
$('a[action-type="fl_menu"]')[0].click();
$('a[title="删除此条微博"]')[0].click();
$('a[action-type="ok"]')[0].click();
},500);
}
}
})();