グリッドの列レイアウトを制御する Cookie がいくつかあります。それらはページ上のJavascriptによって設定され、サーバーはそれらとは関係ありません。JS のボタンを使用してそれらをクリアしたい (デフォルトにリセット)。問題は、ブラウザの GUI を使用しない限り削除できないように見えることです。
私は多数の投稿を読み、https: //developer.mozilla.org/en-US/docs/Web/API/document.cookie とその docCookies ライブラリでさえ、それらすべてを試しました。
以下は開発ツール コンソールからのトランスクリプトであり、これらの Cookie がいかに粘り強いかを示しています。
>document.cookie="food=hotdog"
"food=hotdog"
>docCookies.keys()
["food", "ext-history-results", "ext-today-summaries", "csrftoken"]
>docCookies.removeItem("ext-history-results")
true
>docCookies.keys()
["food", "ext-history-results", "ext-today-summaries", "csrftoken"]
>docCookies.removeItem("food")
true
>docCookies.keys()
["ext-history-results", "ext-today-summaries", "csrftoken"]
>docCookies.removeItem("ext-history-results")
true
>docCookies.keys()
["ext-history-results", "ext-today-summaries", "csrftoken"]
>document.cookie="food=hotdog"
"food=hotdog"
>docCookies.keys()
["food", "ext-history-results", "ext-today-summaries", "csrftoken"]
>docCookies.removeItem("ext-history-results")
true
>docCookies.keys()
["food", "ext-history-results", "ext-today-summaries", "csrftoken"]
>docCookies.removeItem("food")
true
>docCookies.keys()
["ext-history-results", "ext-today-summaries", "csrftoken"] //csrftoken is set by the server
>docCookies.removeItem("csrftoken")
true
>docCookies.keys()
["ext-history-results", "ext-today-summaries", "csrftoken"]
>docCookies.removeItem("ext-today-summaries")
true
>document.cookie // output wrapped for "clarity"
"ext-history-results=o%3Acolumns%3Da%253Ao%25253Aid%25253Ds%2525253Ah9%255Eo%25253Aid%25253Ds%2525253Aext-gen1133%255Eo%25253Aid%25253Ds%2525253Ah1%255Eo%25253Aid%25253Ds%2525253Ah2%255Eo%25253Aid%25253Ds%2525253Ah3%255Eo%25253Aid%25253Ds%2525253Ah4%255Eo%25253Aid%25253Ds%2525253Ah5%255Eo%25253Aid%25253Ds%2525253Ah6%255Eo%25253Aid%25253Ds%2525253Ah7%255Eo%25253Aid%25253Ds%2525253Ah8%5Esort%3Do%253Aproperty%253Ds%25253Agrouper%255Edirection%253Ds%25253AASC%255Eroot%253Ds%25253Adata;
ext-today-summaries=o%3Acolumns%3Da%253Ao%25253Aid%25253Ds%2525253Ah1%255Eo%25253Aid%25253Ds%2525253Ah2%255Eo%25253Aid%25253Ds%2525253Ah3%255Eo%25253Aid%25253Ds%2525253Ah4%255Eo%25253Aid%25253Ds%2525253Ah5%255Eo%25253Aid%25253Ds%2525253Ah6%255Eo%25253Aid%25253Ds%2525253Ah7%255Eo%25253Aid%25253Ds%2525253Ah8%255Eo%25253Aid%25253Ds%2525253Ah9%5Esort%3Do%253Aproperty%253Ds%25253ABox%255Edirection%253Ds%25253AASC%255Eroot%253Ds%25253Adata;
csrftoken=RMYlasyNxjPz8pMpn2gMvYxCscMQGX5W"
これらの Cookie を削除できないのはなぜですか?
docCookies コードは以下のとおりです (上記のリンクにもありますが、リンクが変更された場合に備えて)
/*\
|*|
|*| :: cookies.js ::
|*|
|*| A complete cookies reader/writer framework with full unicode support.
|*|
|*| https://developer.mozilla.org/en-US/docs/DOM/document.cookie
|*|
|*| This framework is released under the GNU Public License, version 3 or later.
|*| http://www.gnu.org/licenses/gpl-3.0-standalone.html
|*|
|*| Syntaxes:
|*|
|*| * docCookies.setItem(name, value[, end[, path[, domain[, secure]]]])
|*| * docCookies.getItem(name)
|*| * docCookies.removeItem(name[, path], domain)
|*| * docCookies.hasItem(name)
|*| * docCookies.keys()
|*|
\*/
var docCookies = {
getItem: function (sKey) {
return decodeURIComponent(document.cookie.replace(new RegExp("(?:(?:^|.*;)\\s*" + encodeURIComponent(sKey).replace(/[\-\.\+\*]/g, "\\$&") + "\\s*\\=\\s*([^;]*).*$)|^.*$"), "$1")) || null;
},
setItem: function (sKey, sValue, vEnd, sPath, sDomain, bSecure) {
if (!sKey || /^(?:expires|max\-age|path|domain|secure)$/i.test(sKey)) { return false; }
var sExpires = "";
if (vEnd) {
switch (vEnd.constructor) {
case Number:
sExpires = vEnd === Infinity ? "; expires=Fri, 31 Dec 9999 23:59:59 GMT" : "; max-age=" + vEnd;
break;
case String:
sExpires = "; expires=" + vEnd;
break;
case Date:
sExpires = "; expires=" + vEnd.toUTCString();
break;
}
}
document.cookie = encodeURIComponent(sKey) + "=" + encodeURIComponent(sValue) + sExpires + (sDomain ? "; domain=" + sDomain : "") + (sPath ? "; path=" + sPath : "") + (bSecure ? "; secure" : "");
return true;
},
removeItem: function (sKey, sPath, sDomain) {
if (!sKey || !this.hasItem(sKey)) { return false; }
document.cookie = encodeURIComponent(sKey) + "=; expires=Thu, 01 Jan 1970 00:00:00 GMT" + ( sDomain ? "; domain=" + sDomain : "") + ( sPath ? "; path=" + sPath : "");
return true;
},
hasItem: function (sKey) {
return (new RegExp("(?:^|;\\s*)" + encodeURIComponent(sKey).replace(/[\-\.\+\*]/g, "\\$&") + "\\s*\\=")).test(document.cookie);
},
keys: /* optional method: you can safely remove it! */ function () {
var aKeys = document.cookie.replace(/((?:^|\s*;)[^\=]+)(?=;|$)|^\s*|\s*(?:\=[^;]*)?(?:\1|$)/g, "").split(/\s*(?:\=[^;]*)?;\s*/);
for (var nIdx = 0; nIdx < aKeys.length; nIdx++) { aKeys[nIdx] = decodeURIComponent(aKeys[nIdx]); }
return aKeys;
}
};