diff --git a/src/core/render/tpl.js b/src/core/render/tpl.js
index 2b5862287..9e3fab126 100644
--- a/src/core/render/tpl.js
+++ b/src/core/render/tpl.js
@@ -1,5 +1,4 @@
-import {isMobile} from '../util/env'
-import {escapeString} from '../util/core'
+import { isMobile } from '../util/env'
 /**
  * Render github corner
  * @param  {Object} data
@@ -9,11 +8,13 @@ export function corner(data, cornerExternalLinkTarge) {
   if (!data) {
     return ''
   }
+
   if (!/\/\//.test(data)) {
     data = 'https://github.com/' + data
   }
+
   data = data.replace(/^git\+/, '')
-  // double check
+  // Double check
   cornerExternalLinkTarge = cornerExternalLinkTarge || '_blank'
 
   return (
@@ -31,8 +32,7 @@ export function corner(data, cornerExternalLinkTarge) {
  * Render main content
  */
 export function main(config) {
-
-  const name = config.name? escapeString(config.name):''
+  const name = config.name ? config.name : ''
 
   const aside =
     '<button class="sidebar-toggle" aria-label="Menu">' +
@@ -41,13 +41,11 @@ export function main(config) {
     '</div>' +
     '</button>' +
     '<aside class="sidebar">' +
-    (config.name ?
-      `<h1 class="app-name"><a class="app-name-link" data-nosearch>${
-        config.logo ? 
-           `<img alt="${name}" src=${config.logo}>` :
-          name
-      }</a></h1>` :
-      '') +
+    (config.name
+      ? `<h1 class="app-name"><a class="app-name-link" data-nosearch>${
+          config.logo ? `<img alt="${name}" src=${config.logo}>` : name
+        }</a></h1>`
+      : '') +
     '<div class="sidebar-nav"><!--sidebar--></div>' +
     '</aside>'
 
@@ -88,6 +86,7 @@ export function tree(toc, tpl = '<ul class="app-sub-sidebar">{inner}</ul>') {
   if (!toc || !toc.length) {
     return ''
   }
+
   let innerHTML = ''
   toc.forEach(node => {
     innerHTML += `<li><a class="section-link" href="${node.slug}">${node.title}</a></li>`
diff --git a/src/core/util/core.js b/src/core/util/core.js
index c538e2223..0df54c9c3 100644
--- a/src/core/util/core.js
+++ b/src/core/util/core.js
@@ -57,18 +57,3 @@ export function isFn(obj) {
   return typeof obj === 'function'
 }
 
-/**
- * escape String
- */
-export function escapeString(string) {
-  const entityMap = {
-    '&': '&amp;',
-    '<': '&lt;',
-    '>': '&gt;',
-    '"': '&quot;',
-    '\'': '&#39;',
-    '/': '&#x2F;'
-  }
-
-  return String(string).replace(/[&<>"'/]/g, s => entityMap[s])
-}
\ No newline at end of file