diff --git a/src/errorLog.js b/src/errorLog.js
deleted file mode 100644
index 00b18b72..00000000
--- a/src/errorLog.js
+++ /dev/null
@@ -1,19 +0,0 @@
-import Vue from 'vue'
-import store from './store'
-
-// you can set only in production env show the error-log
-if (process.env.NODE_ENV === 'production') {
-  Vue.config.errorHandler = function(err, vm, info, a) {
-  // Don't ask me why I use Vue.nextTick, it just a hack.
-  // detail see https://forum.vuejs.org/t/dispatch-in-vue-config-errorhandler-has-some-problem/23500
-    Vue.nextTick(() => {
-      store.dispatch('addErrorLog', {
-        err,
-        vm,
-        info,
-        url: window.location.href
-      })
-      console.error(err, info)
-    })
-  }
-}
diff --git a/src/main.js b/src/main.js
index 856ebd3e..225c4691 100644
--- a/src/main.js
+++ b/src/main.js
@@ -15,8 +15,8 @@ import router from './router'
 
 import i18n from './lang' // Internationalization
 import './icons' // icon
-import './errorLog' // error log
 import './permission' // permission control
+import './utils/errorLog' // error log
 
 import * as filters from './filters' // global filters
 
diff --git a/src/settings.js b/src/settings.js
index 27e7e65a..7e3e133d 100644
--- a/src/settings.js
+++ b/src/settings.js
@@ -1,4 +1,5 @@
 export default {
+  title: 'vue-element-admin',
 
   /**
    * @type {boolean} true | false
@@ -16,7 +17,7 @@ export default {
    * @type {string | array} 'production' | ['production','development']
    * @description Need show err logs component.
    * The default is only used in the production env
-   * If you want to use it in dev, you can pass ['production','development']
+   * If you want to also use it in dev, you can pass ['production','development']
    */
   errorLog: 'production'
 }
diff --git a/src/utils/errorLog.js b/src/utils/errorLog.js
new file mode 100644
index 00000000..c3c0597f
--- /dev/null
+++ b/src/utils/errorLog.js
@@ -0,0 +1,35 @@
+import Vue from 'vue'
+import store from '@/store'
+import { isString, isArray } from '@/utils/validate'
+import settings from '@/settings'
+
+// you can set in settings.js
+// errorLog:'production' | ['production','development']
+const { errorLog: needErrorLog } = settings
+
+function checkNeed(arg) {
+  const env = process.env.NODE_ENV
+  if (isString(needErrorLog)) {
+    return env === needErrorLog
+  }
+  if (isArray(needErrorLog)) {
+    return needErrorLog.includes(env)
+  }
+  return false
+}
+
+if (checkNeed()) {
+  Vue.config.errorHandler = function(err, vm, info, a) {
+  // Don't ask me why I use Vue.nextTick, it just a hack.
+  // detail see https://forum.vuejs.org/t/dispatch-in-vue-config-errorhandler-has-some-problem/23500
+    Vue.nextTick(() => {
+      store.dispatch('addErrorLog', {
+        err,
+        vm,
+        info,
+        url: window.location.href
+      })
+      console.error(err, info)
+    })
+  }
+}
diff --git a/src/utils/validate.js b/src/utils/validate.js
index 5e4056f5..ba93d1c3 100644
--- a/src/utils/validate.js
+++ b/src/utils/validate.js
@@ -11,36 +11,41 @@ export function validUsername(str) {
   return valid_map.indexOf(str.trim()) >= 0
 }
 
-/* 合法uri*/
 export function validURL(url) {
   const reg = /^(https?|ftp):\/\/([a-zA-Z0-9.-]+(:[a-zA-Z0-9.&%$-]+)*@)*((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9][0-9]?)(\.(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])){3}|([a-zA-Z0-9-]+\.)*[a-zA-Z0-9-]+\.(com|edu|gov|int|mil|net|org|biz|arpa|info|name|pro|aero|coop|museum|[a-zA-Z]{2}))(:[0-9]+)*(\/($|[a-zA-Z0-9.,?'\\+&%$#=~_-]+))*$/
   return reg.test(url)
 }
 
-/* 小写字母*/
 export function validLowerCase(str) {
   const reg = /^[a-z]+$/
   return reg.test(str)
 }
 
-/* 大写字母*/
 export function validUpperCase(str) {
   const reg = /^[A-Z]+$/
   return reg.test(str)
 }
 
-/* 大小写字母*/
 export function validAlphabets(str) {
   const reg = /^[A-Za-z]+$/
   return reg.test(str)
 }
 
-/**
- * validate email
- * @param email
- * @returns {boolean}
- */
 export function validEmail(email) {
-  const re = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/
-  return re.test(email)
+  const reg = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/
+  return reg.test(email)
+}
+
+export function isString(str) {
+  if (typeof str === 'string' || str instanceof String) {
+    return true
+  }
+  return false
+}
+
+export function isArray(arg) {
+  if (typeof Array.isArray === 'undefined') {
+    return Object.prototype.toString.call(arg) === '[object Array]'
+  }
+  return Array.isArray(arg)
 }
diff --git a/vue.config.js b/vue.config.js
index 4a9c12b2..5d46f51b 100644
--- a/vue.config.js
+++ b/vue.config.js
@@ -1,14 +1,12 @@
 'use strict'
 const path = require('path')
+const settings = require('./src/settings.js')
+const { name } = settings
 
 function resolve(dir) {
   return path.join(__dirname, dir)
 }
 
-// TODO: change to Settings
-const port = 9527
-const name = 'vue-element-admin'
-
 // Explanation of each configuration item You can find it in https://cli.vuejs.org/config/
 module.exports = {
   /**
@@ -25,7 +23,7 @@ module.exports = {
   lintOnSave: process.env.NODE_ENV === 'development' ? 'error' : false,
   productionSourceMap: false,
   devServer: {
-    port: port,
+    port: 9527,
     open: true,
     overlay: {
       warnings: false,