nalinv-mobile-new-html/dist/cdn/store/1.3.20/store.js
2025-05-29 13:21:20 +08:00

194 lines
6.8 KiB
JavaScript

'use strict'
// Module export pattern from
// https://github.com/umdjs/umd/blob/master/returnExports.js
;(function (root, factory) {
if (typeof define === 'function' && define.amd) {
// AMD. Register as an anonymous module.
define([], factory)
} else if (typeof exports === 'object') {
// Node. Does not work with strict CommonJS, but
// only CommonJS-like environments that support module.exports,
// like Node.
module.exports = factory()
} else {
// Browser globals (root is window)
root.store = factory()
}
}(this, function () {
// Store.js
var store = {}
var win = (typeof window !== 'undefined' ? window : global)
var doc = win.document
var localStorageName = 'localStorage'
var scriptTag = 'script'
var storage
store.disabled = false
store.version = '1.3.20'
store.set = function (key, value) {}
store.get = function (key, defaultVal) {}
store.has = function (key) { return store.get(key) !== undefined }
store.remove = function (key) {}
store.clear = function () {}
store.transact = function (key, defaultVal, transactionFn) {
if (transactionFn == null) {
transactionFn = defaultVal
defaultVal = null
}
if (defaultVal == null) {
defaultVal = {}
}
var val = store.get(key, defaultVal)
transactionFn(val)
store.set(key, val)
}
store.getAll = function () {}
store.forEach = function () {}
store.serialize = function (value) {
return JSON.stringify(value)
}
store.deserialize = function (value) {
if (typeof value !== 'string') { return undefined }
try { return JSON.parse(value) } catch (e) { return value || undefined }
}
// Functions to encapsulate questionable FireFox 3.6.13 behavior
// when about.config::dom.storage.enabled === false
// See https://github.com/marcuswestin/store.js/issues#issue/13
function isLocalStorageNameSupported () {
try { return (localStorageName in win && win[localStorageName]) } catch (err) { return false }
}
if (isLocalStorageNameSupported()) {
storage = win[localStorageName]
store.set = function (key, val) {
if (val === undefined) { return store.remove(key) }
storage.setItem(key, store.serialize(val))
return val
}
store.get = function (key, defaultVal) {
var val = store.deserialize(storage.getItem(key))
return (val === undefined ? defaultVal : val)
}
store.remove = function (key) { storage.removeItem(key) }
store.clear = function () { storage.clear() }
store.getAll = function () {
var ret = {}
store.forEach(function (key, val) {
ret[key] = val
})
return ret
}
store.forEach = function (callback) {
for (var i = 0; i < storage.length; i++) {
var key = storage.key(i)
callback(key, store.get(key))
}
}
} else if (doc && doc.documentElement.addBehavior) {
var storageOwner,
storageContainer
// Since #userData storage applies only to specific paths, we need to
// somehow link our data to a specific path. We choose /favicon.ico
// as a pretty safe option, since all browsers already make a request to
// this URL anyway and being a 404 will not hurt us here. We wrap an
// iframe pointing to the favicon in an ActiveXObject(htmlfile) object
// (see: http://msdn.microsoft.com/en-us/library/aa752574(v=VS.85).aspx)
// since the iframe access rules appear to allow direct access and
// manipulation of the document element, even for a 404 page. This
// document can be used instead of the current document (which would
// have been limited to the current path) to perform #userData storage.
try {
storageContainer = new ActiveXObject('htmlfile')
storageContainer.open()
storageContainer.write('<' + scriptTag + '>document.w=window</' + scriptTag + '><iframe src="/favicon.ico"></iframe>')
storageContainer.close()
storageOwner = storageContainer.w.frames[0].document
storage = storageOwner.createElement('div')
} catch (e) {
// somehow ActiveXObject instantiation failed (perhaps some special
// security settings or otherwse), fall back to per-path storage
storage = doc.createElement('div')
storageOwner = doc.body
}
var withIEStorage = function (storeFunction) {
return function () {
var args = Array.prototype.slice.call(arguments, 0)
args.unshift(storage)
// See http://msdn.microsoft.com/en-us/library/ms531081(v=VS.85).aspx
// and http://msdn.microsoft.com/en-us/library/ms531424(v=VS.85).aspx
storageOwner.appendChild(storage)
storage.addBehavior('#default#userData')
storage.load(localStorageName)
var result = storeFunction.apply(store, args)
storageOwner.removeChild(storage)
return result
}
}
// In IE7, keys cannot start with a digit or contain certain chars.
// See https://github.com/marcuswestin/store.js/issues/40
// See https://github.com/marcuswestin/store.js/issues/83
var forbiddenCharsRegex = new RegExp("[!\"#$%&'()*+,/\\\\:;<=>?@[\\]^`{|}~]", 'g')
var ieKeyFix = function (key) {
return key.replace(/^d/, '___$&').replace(forbiddenCharsRegex, '___')
}
store.set = withIEStorage(function (storage, key, val) {
key = ieKeyFix(key)
if (val === undefined) { return store.remove(key) }
storage.setAttribute(key, store.serialize(val))
storage.save(localStorageName)
return val
})
store.get = withIEStorage(function (storage, key, defaultVal) {
key = ieKeyFix(key)
var val = store.deserialize(storage.getAttribute(key))
return (val === undefined ? defaultVal : val)
})
store.remove = withIEStorage(function (storage, key) {
key = ieKeyFix(key)
storage.removeAttribute(key)
storage.save(localStorageName)
})
store.clear = withIEStorage(function (storage) {
var attributes = storage.XMLDocument.documentElement.attributes
storage.load(localStorageName)
for (var i = attributes.length - 1; i >= 0; i--) {
storage.removeAttribute(attributes[i].name)
}
storage.save(localStorageName)
})
store.getAll = function (storage) {
var ret = {}
store.forEach(function (key, val) {
ret[key] = val
})
return ret
}
store.forEach = withIEStorage(function (storage, callback) {
var attributes = storage.XMLDocument.documentElement.attributes
for (var i = 0, attr; attr = attributes[i]; ++i) {
callback(attr.name, store.deserialize(storage.getAttribute(attr.name)))
}
})
}
try {
var testKey = '__storejs__'
store.set(testKey, testKey)
if (store.get(testKey) != testKey) { store.disabled = true }
store.remove(testKey)
} catch (e) {
store.disabled = true
}
store.enabled = !store.disabled
return store
}))