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Update indexeddb.md #129

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4 changes: 2 additions & 2 deletions docs/bom/indexeddb.md
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Expand Up @@ -16,9 +16,9 @@ IndexedDB 具有以下特点。

**（3）支持事务。** IndexedDB 支持事务（transaction），这意味着一系列操作步骤之中，只要有一步失败，整个事务就都取消，数据库回滚到事务发生之前的状态，不存在只改写一部分数据的情况。

**（4）同源限制** IndexedDB 受到同源限制，每一个数据库对应创建它的域名。网页只能访问自身域名下的数据库，而不能访问跨域的数据库。
**（4）同源限制。** IndexedDB 受到同源限制，每一个数据库对应创建它的域名。网页只能访问自身域名下的数据库，而不能访问跨域的数据库。

**（5）储存空间大** IndexedDB 的储存空间比 LocalStorage 大得多，一般来说不少于 250MB，甚至没有上限。
**（5）储存空间大。** IndexedDB 的储存空间比 LocalStorage 大得多，一般来说不少于 250MB，甚至没有上限。

**（6）支持二进制储存。** IndexedDB 不仅可以储存字符串，还可以储存二进制数据（ArrayBuffer 对象和 Blob 对象）。

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