???? ?? ??? ?? sessionStorage? localStorage? ??? ? ?? ? ???? ??? ?? ??? ?? ?? ?????.
1. ??????
??? ??: ???? ???? ?? ???? ?????. ??? ????? ??? ???? ?????.
?? ??:
- ???? ? ???? ???? ???? ? ??? ??? ?? ????? ??? sessionStorage? ?????.
- ?: ???? ?? ?? ??? ?? ??? ???? ???? ?? ???? ?? ??? ???? ? ?? ???? ???? ???.
if (!sessionStorage.getItem('popupDisplayed')) {
// Display popup
alert('Welcome to the website!');
sessionStorage.setItem('popupDisplayed', 'true');
}
2. ??????
??? ???: ????? ?? ??? ???? ????? ????? ????? ?? ???? ??? ??? ???? ?????.
?? ??:
???? ??? ? ? ?? ???? ??? ??? ?? ?? localStorage? ?????.
?: ???? ? ?? ???? ??? ????? ???? ?? ??? ?? ???? ???? ???.
if (!localStorage.getItem('popupDisplayed')) {
// Display popup
alert('Check out our special offer!');
localStorage.setItem('popupDisplayed', 'true');
}
?? ??? ?? ???:
| Feature | sessionStorage | localStorage |
|---|---|---|
| Data Persistence | Only for the current session. | Persists indefinitely or until cleared. |
| Scope | Tab-specific. | Shared across all tabs/windows of the same origin. |
| When to Use | Temporary popups (e.g., session-only welcome message). | Persistent control (e.g., don't show again for a returning user). |
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