/*
Enhance localStorage -- Start --
usage: cusLocalStorage.setItem('infos','name','jayce) ==> "infos":"{'name':'jayce'}"
cusLocalStorage.getItem('infos','name') ==> "jayce"
cusLocalStorage.removeItem('infos','name') ==> "'infos':'{}'"
*/
!((localStorage) => {
window.cusLocalStorage = {
setItem: function (objkey, fieldkey, fieldval) {
this.errorCatch(objkey, fieldkey, fieldval)
let getObj = localStorage.getItem(objkey)
if (getObj == null) {
localStorage.setItem(
objkey,
JSON.stringify({
[fieldkey]: fieldval,
})
)
} else {
let JsonObj = JSON.parse(getObj)
JsonObj[fieldkey] = fieldval
localStorage.setItem(objkey, JSON.stringify(JsonObj))
}
},
getItem: function (objkey, fieldkey) {
this.errorCatch(objkey, fieldkey)
let getObj = localStorage.getItem(objkey)
if (getObj != null) {
return JSON.parse(getObj)[fieldkey]
} else {
return null
}
},
removeItem: function (objkey, fieldkey) {
this.errorCatch(objkey, fieldkey)
let getObj = localStorage.getItem(objkey)
if (getObj != null) {
try {
let jsonObj = JSON.parse(getObj)
delete jsonObj[fieldkey]
localStorage.setItem(objkey, JSON.stringify(jsonObj))
} catch (e) {}
}
},
errorCatch: function () {
// prettier-ignore
if (typeof arguments[0] != 'string' || typeof arguments[1] != 'string') {
throw new Error('param1 AND param2, must be a string expected !')
}
},
}
})(localStorage)
/* Enhance localStorage -- End -- */
localStorage 緩存方法增強[code snippet]
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