JS实现问卷星自动填问卷脚本并在两秒自动提交功能

javascript: void (  (function () {  var hash = {};  var a = document.evaluate('//input[(@type="radio") and not(@value="0")]//@name',      document,      null,      XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE,      null);  if (a.snapshotLength){   for (var i = 0; i < a.snapshotLength; i++) {   if (!(a.snapshotItem(i).value in hash))   hash[a.snapshotItem(i).value] = 0;   hash[a.snapshotItem(i).value]++;   }   for (i in hash) {   document.evaluate('//input[(@type="radio") and not(@value="0") and @name="' + i + '"]',      document,      null,      XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE,      null).snapshotItem(Math.floor(Math.random() * hash[i])).click();   }  }  var array = new Array();  var as = document.getElementsByTagName("a");  var preName = "";  var change = false;  for(var i=0; i < as.length; i++){   if(as[i].getAttribute("rel") != null && as[i].nextSibling.getAttribute("type") == "checkbox"){   var name = as[i].nextSibling.getAttribute("name");   var check = as[i].nextSibling.getAttribute("checked");   if(check == "checked"){    as[i].click();   }   if(preName == "" || preName == name){    if(Math.random() * 10 > 5){    as[i].click();    change = true;    }   }   var next = as[i + 1];   if(next.getAttribute("rel") != null && next.nextSibling.getAttribute("type") == "checked" && next.getAttribute("name") != name){    if(!change){    as[i].click();    }    change = false;   }   if(i == as.length - 1 && !change){    as[i].click();   }   preName = name;   }  }  var objs = document.getElementsByTagName("textarea");  for (var i = 0; i < objs.length; i++){   objs[i].focus();   objs[i].value = "最好的意见就是没有意见，哈哈哈哈哈哈哈";   objs[i].blur();  }  var choose = document.getElementsByTagName("select");  for (var i = 0; i < choose.length; i++) {   choose[i].focus();   choose[i].value = "1";   choose[i].blur();  }  })()); function validate(){return true;} var btn = document.getElementById("submit_button"); window.setTimeout(btn.click(),2000); 

if (J[0].checked || J[1].checked) {  alert('系统检测到非法填写问卷');  window.location.href = window.location.href;  return; } 

<li style="width:99%;"> <a href="javascript:" rel="external nofollow" class="jqCheckbox" rel="q2_2"></a> <input style="display:none;" id="q2_2" name="q2" value="2" type="checkbox"> <label>选项8</label> </li>