javascript 有没有办法删除所有具有匹配特定模式的键的 sessionStorage 项目？
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Is there a way to remove all sessionStorage items with keys that match a certain pattern?
提问by Jesse Atkinson
Lets say my sessionStoragecontains three objects who's keys are foo, foobar, and baz. Is there a way that I can call .removeItemor somehow delete all items in sessionStoragewho's keys match foo? In this example I'd be left with only the item who's key is baz.
比方说，我sessionStorage有三个对象是谁的键foo，foobar和baz。有没有办法可以调用.removeItem或以某种方式删除sessionStoragewho's keys match 中的所有项目foo？在这个例子中，我只剩下关键是baz.
回答by roland
Update September 20, 2014As pointed out by Jordan Trudgett the reverse loop is more appropriate
2014 年 9 月 20 日更新正如 Jordan Trudgett 所指出的，反向循环更合适
You can only achieve it programmatically as sessionStorageexposes a limited set of methods: getItem(key), setItem(key, value), removeItem(key), key(position), clear()and length():
您只能通过编程实现它sessionStorage公开了一组有限的方法：getItem(key)，setItem(key, value)，removeItem(key)，key(position)，clear()和length()：
var n = sessionStorage.length;
while(n--) {
var key = sessionStorage.key(n);
if(/foo/.test(key)) {
sessionStorage.removeItem(key);
}
}
See Nicholas C. Zakas' blog entry for more details:
有关更多详细信息，请参阅 Nicholas C. Zakas 的博客条目：
http://www.nczonline.net/blog/2009/07/21/introduction-to-sessionstorage/
http://www.nczonline.net/blog/2009/07/21/introduction-to-sessionstorage/
回答by Pointy
You could do something like
你可以做类似的事情
Object.keys(sessionStorage)
.filter(function(k) { return /foo/.test(k); })
.forEach(function(k) {
sessionStorage.removeItem(k);
});
回答by petko
Since both local and sessionStorage are objects you can go through their properties like this:
由于 local 和 sessionStorage 都是对象，因此您可以像这样查看它们的属性：
for (var obj in localStorage) {
if (localStorage.hasOwnProperty(obj) && obj == "myKey") {
localStorage.removeItem(obj);
}
}and remove the desired values by key, here it's "myKey" for example.
并通过键删除所需的值，例如这里是“myKey”。
回答by Shubham Takode
Try this:
试试这个：
angular.forEach(sessionStorage, function (item,key) {
sessionStorage.removeItem(key);
});
This will delete everything from sessionStorage
这将从 sessionStorage 中删除所有内容
