js 操作数据方法

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import storage from 'good-storage'   function inertArray(arr, val, compare, maxLen) {   const index = arr.findIndex(compare)   if (index === 0) {     return   }   if (index > 0) {     arr.splice(index, 1)   }   arr.unshift(val)   if (maxLen && arr.length > maxLen) {     arr.pop()   } }   function deleteFromArray(arr, compare) {   const index = arr.findIndex(compare)   if (index > -1) {     arr.splice(index, 1)   } }   export function save(item, key, compare, maxLen) {   const items = storage.get(key, [])   inertArray(items, item, compare, maxLen)   storage.set(key, items)   return items }   export function remove(key, compare) {   console.log(compare)   const items = storage.get(key, [])   deleteFromArray(items, compare)   storage.set(key, items)   return items }   export function load(key) {   return storage.get(key, []) }   export function clear(key) {   storage.remove(key)   return [] }   export function saveAll(items, key) {   storage.set(key, items) }

　　使用：

 

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function saveSearch(query) {   const searches = save(query, SEARCH_KEY, (item) => {     return item === query   }, maxLen)   store.commit('setSearchHistory', searches) }   function deleteSearch(query) {   const searches = remove(SEARCH_KEY, (item) => {     return item === query   })   store.commit('setSearchHistory', searches) }