Javascript HTML5 localStorage 将数据替换为已存在的密钥
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HTML5 localStorage replace data to already existing key
提问by Mircea
I have the following localStoragekey:
我有以下localStorage键：
localStorage.setItem(1, "<div id='MyId'>value 1</div><div id='NewId'>other value</div>");
Is it possible to replace, change only the second id, make the:
是否可以替换，仅更改第二个 ID，使：
<div id='MyId'>value 1</div><div id='NewId'>other value</div>
turn into
变成
<div id='MyId'>value 1</div><div id='NewId'>replaced value</div>
I do not want to delete this key and create a new one, just replace a part of it. Thank you.
我不想删除这个键并创建一个新的，只是替换它的一部分。谢谢你。
回答by epascarello
Taken from Dive into HTML5:
Calling setItem() with a named key that already exists will silently overwrite the previous value.
使用已存在的命名键调用 setItem() 将无声地覆盖先前的值。
So read the value with getItem() [if needed], do your replace, set the new value with setItem().
因此，使用 getItem() [如果需要] 读取值，进行替换，使用 setItem() 设置新值。
