如果你有jquery的访问。Cookie插件，你可以用这种方式删除所有的Cookie:

for (var it in $.cookie()) $.removeCookie(it);

document.cookie.split(";").forEach(function(c) { 
    document.cookie = c.replace(/^ +/, "").replace(/=.*/, "=;expires=" + new Date().toUTCString() + ";path=/"); 
});
//clearing local storage
localStorage.clear();

函数方法+ ES6

const cookieCleaner = () => {
  return document.cookie.split(";").reduce(function (acc, cookie) {
    const eqPos = cookie.indexOf("=");
    const cleanCookie = `${cookie.substr(0, eqPos)}=;expires=Thu, 01 Jan 1970 00:00:00 GMT;`;
    return `${acc}${cleanCookie}`;
  }, "");
}

注意:不处理路径

简单。得更快。

function deleteAllCookies() {
 var c = document.cookie.split("; ");
 for (i in c) 
  document.cookie =/^[^=]+/.exec(c[i])[0]+"=;expires=Thu, 01 Jan 1970 00:00:00 GMT";    
}

Jquery:

var cookies = $.cookie();
for(var cookie in cookies) {
$.removeCookie(cookie);
}

香草JS

function clearListCookies()
{   
 var cookies = document.cookie.split(";");
 for (var i = 0; i < cookies.length; i++)
  {   
    var spcook =  cookies[i].split("=");
    deleteCookie(spcook[0]);
  }
  function deleteCookie(cookiename)
   {
    var d = new Date();
    d.setDate(d.getDate() - 1);
    var expires = ";expires="+d;
    var name=cookiename;
    //alert(name);
    var value="";
    document.cookie = name + "=" + value + expires + "; path=/acc/html";                    
}
window.location = ""; // TO REFRESH THE PAGE
}

我在这里贡献是因为这个功能将允许您删除所有cookie(匹配路径，默认为no-path或\)，也包括设置为包含在子域上的cookie

function clearCookies( wildcardDomain=false, primaryDomain=true, path=null ){
  pathSegment = path ? '; path=' + path : ''
  expSegment = "=;expires=Thu, 01 Jan 1970 00:00:00 GMT"
  document.cookie.split(';').forEach(
    function(c) { 
      primaryDomain && (document.cookie = c.replace(/^ +/, "").replace(/=.*/, expSegment + pathSegment))
      wildcardDomain && (document.cookie = c.replace(/^ +/, "").replace(/=.*/, expSegment + pathSegment + '; domain=' + document.domain))
    }
  )
}