Please note, this is a STATIC archive of website developer.mozilla.org from 03 Nov 2016, cach3.com does not collect or store any user information, there is no "phishing" involved.

Storage.setItem()

이 문서는 아직 자원 봉사자들이 한국어로 번역하지 않았습니다. 함께 해서 번역을 마치도록 도와 주세요!

The setItem() method of the Storage interface, when passed a key name and value, will add that key to the storage, or update that key's value if it already exists.

Syntax

storage.setItem(keyName, keyValue);

Parameters

keyName
A DOMString containing the name of the key you want to create/update.
keyValue
A DOMString containing the value you want to give the key you are creating/updating.

Returns

No return value.

Exceptions

setItem() may throw an exception if the storage is full. Particularly, in Mobile Safari (since iOS 5) it always throws when the user enters private mode (Safari sets quota to 0 bytes in private mode, contrary to other browsers, who allow storage in private mode, using separate data containers).
Hence the developers should make sure to always catch the possible exceptions from setItem().

Example

The following function creates three data items inside local storage.

function populateStorage() {
  localStorage.setItem('bgcolor', 'red');
  localStorage.setItem('font', 'Helvetica');
  localStorage.setItem('image', 'myCat.png');
}

Note: To see this used within a real world example, see our Web Storage Demo.

Specifications

Specification Status Comment
Web Storage (Second edition)
The definition of 'setItem()' in that specification.
Recommendation  

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
localStorage 4 3.5 8 10.50 4
sessionStorage 5 2 8 10.50 4
Feature Android Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
Basic support 2.1 ? 8 11 iOS 3.2

All browsers have varying capacity levels for both localStorage and sessionStorage. Here is a detailed rundown of all the storage capacities for various browsers.

Note: since iOS 5.1, Safari Mobile stores localStorage data in the cache folder, which is subject to occasional clean up, at the behest of the OS, typically if space is short.

See also

Using the Web Storage API

문서 태그 및 공헌자

 이 페이지의 공헌자: Aurora49, jakub-g, teoli, scunliffe, chrisdavidmills
 최종 변경: Aurora49,