Why localStorage and sessionStorage belong to the category of html5, but why is it supported by IE8?

Question

我想大声告诉你 · Answer

html5 is only the fifth version of html. Before this, there was no localStorage or sessionStorage. HTML5 introduced it, but it does not mean that it cannot be used in earlier browser versions.

高洛峰 · Answer

There is no final standard for html5. In fact, what it claims to support is not fully supported. Each browser is gradually supporting it

我想大声告诉你 · Answer

p is also a category of h5, why does ie8 support it?

Why localStorage and sessionStorage belong to the category of html5, but why is it supported by IE8?

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