如何用JS判断url来源,并写入COOKIE，达到要求立刻送100分

Question

function getCookie(key){
  var cookies=document.cookie;
  var startchar=cookies.indexOf(key);
  if(startchar!=-1){
    startchar+=key.length+1;
    lastchar=cookies.indexOf(";",startchar);
    if(lastchar==-1){
      lastchar=cookies.length;
    }
    return unescape(cookies.substring(startchar,lastchar));
  }
  return"";
}function setCookie(key,value,domain,expiredTime){
  document.cookie=key+"="+value+"; domain="+domain+"; path=/; expires="+expiredTime.toGMTString()
}if(getCookie('refer') == '') {
  var now = new Date();
  var expiredTime = now.setFullYear(now.getFullYear() + 1); // 一年后
  setCookie('refer', document.referer, d, expiredTime);
  setCookie('url', document.location, d, expiredTime);
}

Answer 1

<script>
function getCookie(key){
  var cookies=document.cookie;
  var startchar=cookies.indexOf(key);
  if(startchar!=-1){
    startchar+=key.length+1;
    lastchar=cookies.indexOf(";",startchar);
    if(lastchar==-1){
      lastchar=cookies.length;
    }
    return unescape(cookies.substring(startchar,lastchar));
  }
  return"";
}function setCookie(key,value,domain,expiredTime){
  document.cookie=key+"="+value+"; domain="+domain+"; path=/; expires="+expiredTime.toGMTString()
}var referr=document.referrer
if(getCookie('refer') == '') {
  var now = new Date();
  var expiredTime = now.setFullYear(now.getFullYear() + 1); // 一年后
  setCookie('refer', document.referer, d, expiredTime);
  setCookie('url', document.location, d, expiredTime);
}</script>