php - HTML5 Web Storage vs Cookies - Stack Overflow

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I want to display a message to first time visitors of a specific page on my site. The message will only need to appear once.

This would be pretty simple to do using cookies but is there more benefit to using HTML5 localStorage? If so how would it be implemented?

I want to display a message to first time visitors of a specific page on my site. The message will only need to appear once.

This would be pretty simple to do using cookies but is there more benefit to using HTML5 localStorage? If so how would it be implemented?

• php
• javascript
• html
• session
• cookies

Share Improve this question Follow asked May 9, 2012 at 22:15 HjalmarCarlsonHjalmarCarlson 87822 gold badges1717 silver badges3434 bronze badges 1

• Does this answer your question? Local Storage vs Cookies – Michael Freidgeim Commented Jul 23, 2022 at 10:19

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4 Answers 4

Sorted by: Reset to default 7

For what you describe, it would almost be easier and less error prone to just use a cookie. Not all browsers will have the same implementation of HTML localStorage, especially IE 7+8. However, they all use cookies and there will be no issues with cross-browser patibility.

Check out this SO for more info: Local Storage, Session storage, Web storage, web database and cookies in HTML5

1. HTML5 localStorage would be a lot more easier to implement it does not requires so many lines and it pretty straight forward how to implement. Here is an example: http://www.w3schools./html5/tryit.asp?filename=tryhtml5_webstorage_local_clickcount
2. The other option that was described here is cookie. Cookie is a widely used solution but it requires more lines to write a cookie, but as it was mentioned above the advantage is the fact that cookie is used through out many old browsers. Here is an example of cookie: http://www.w3schools./js/tryit.asp?filename=tryjs_cookie_username

Looking at the future considering the fact that OP are changing dramatically as well as browsers and it now bees a requirement that more and more browsers have to support HTML5 I would consider localStorage

Off the cuff, I would probably remended cookies, but it depends on what browser your users are using and how you want to render your message.

Cookies are better for a wider audience, because all browsers support them. Older browsers like IE 6 and 7 don't support local storage. Cookies can be manipulated server side too. So if the message you want to display is rendered server side then cookies might be a better option.

Local storage is a little bit easier to access via JavaScript, but there are not many advantages to using it.

localstorage will save data on user puter up to 5 MB, the only bad thing is that the storage is there forever and if you need to expire you will need to do it, cookies handle this automatically.

example of using localstorage:

var visits = parseInt(localStorage["numVisits"]);

var el = document.getElementById("cookieData");

if (isNaN(visits)) {
    visits = 1;
    el.innerHTML = "Wele to the site!";
} else {
    visits += 1;
    el.innerHTML = "Wele back! You've been here " + visits + " times.";
}

localStorage["numVisits"] = visits;

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