Interview Topics:
- Description Cookie localStorage sessionStorage distinction
- capacity
- API for ease of use
- Whether to send an HTTP request
cookie
- It is used for browser and server communication
- Is’ borrowed ‘to local storage
- Document. cookie = ‘… ‘to modify
Disadvantages:
- Cookie storage size, maximum 4KB
- HTTP requests must be sent to the server to increase the amount of requested data
- Only document.cookie = ‘… ‘to modify, too crude
// The same key overwrites the document. Cookie ='a=100; b=200; 'Copy the code
LocalStorage and sessionStorage
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HTML5 is specifically designed for storage and can hold up to 5M
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The API is simple to use setItem getItem
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Will not be sent out with the HTTP request
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LocalStorage data is permanently stored unless deleted by code or manually
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SessionStorage data only exists in the current session and is cleared when the browser is closed
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Generally use localStorage will be more
