diff --git a/themes/chameleon/layout/_partial/after-footer.ejs b/themes/chameleon/layout/_partial/after-footer.ejs
index 39fc077..6085256 100644
--- a/themes/chameleon/layout/_partial/after-footer.ejs
+++ b/themes/chameleon/layout/_partial/after-footer.ejs
@@ -1,6 +1,6 @@
 <% if (is_post()) { %>
-<%- addJs({ src: '/libs/clipboard.js/2.0.4/clipboard.min.js', 'data-sri-fallback': '/js/clipboard.min.js', integrity: 'sha384-8CYhPwYlLELodlcQV713V9ZikA3DlCVaXFDpjHfP8Z36gpddf/Vrt47XmKDsCttu', crossorigin: 'anonymous', defer: true}) %>
+<%- js({ src: '/libs/clipboard.js/2.0.4/clipboard.min.js', 'data-sri-fallback': '/js/clipboard.min.js', integrity: 'sha384-8CYhPwYlLELodlcQV713V9ZikA3DlCVaXFDpjHfP8Z36gpddf/Vrt47XmKDsCttu', crossorigin: 'anonymous', defer: true}) %>
 <% } %>
 
-<%/* javascript of Typing theme */%>
-<%- addJs('/js/chameleon.js') %>
+<%/* javascript of Chameleon theme */%>
+<%- js('/js/chameleon.js') %>
diff --git a/themes/chameleon/layout/_partial/head.ejs b/themes/chameleon/layout/_partial/head.ejs
index 5ce879c..090eddf 100644
--- a/themes/chameleon/layout/_partial/head.ejs
+++ b/themes/chameleon/layout/_partial/head.ejs
@@ -44,11 +44,12 @@
   <link rel="sitemap" type="application/xml" title="Sitemap" href="/sitemap.xml">
 
   <%/* Fallback function for SRI */%>
-  <%- addJs({ src: '/js/sri.min.js', 'async': true }) %>
+  <%- js({ src: '/js/sri.min.js', 'async': true }) %>
 
-  <%- addCss('/css/chameleon.css') %>
+  <%/* CSS of Chameleon theme */%>
+  <%- css('/css/chameleon.css') %>
 
   <% if (theme.icons) { %>
-    <%- addCss({ href: '/libs/fork-awesome/1.1.7/css/fork-awesome.min.css', 'data-sri-fallback': '/forkawesome/css/fork-awesome.min.css', integrity: 'sha384-mByhW6NjnxyShh67P9+fepUvYSd7Uz/qV6e2u4kA2Fi4ZkjXxIP2mRkyK9dwK24W', crossorigin: 'anonymous' }) %>
+    <%- css({ href: '/libs/fork-awesome/1.1.7/css/fork-awesome.min.css', 'data-sri-fallback': '/forkawesome/css/fork-awesome.min.css', integrity: 'sha384-mByhW6NjnxyShh67P9+fepUvYSd7Uz/qV6e2u4kA2Fi4ZkjXxIP2mRkyK9dwK24W', crossorigin: 'anonymous' }) %>
   <% } %>
 </head>
diff --git a/themes/chameleon/scripts/addCss.js b/themes/chameleon/scripts/addCss.js
deleted file mode 100644
index 5f200ac..0000000
--- a/themes/chameleon/scripts/addCss.js
+++ /dev/null
@@ -1,32 +0,0 @@
-'use strict'
-/* global hexo */
-
-/*
-* Helper to embed css file with support of custom attributes
-* https://github.com/hexojs/hexo/pull/3690
-*/
-
-hexo.extend.helper.register('addCss', (...args) => {
-  let result = '\n'
-  let items = args
-
-  if (!Array.isArray(args)) {
-    items = [args]
-  }
-
-  items.forEach(item => {
-    // Old syntax
-    if (typeof item === 'string' || item instanceof String) {
-      result += `<link rel="stylesheet" href="${item}">\n`
-    } else {
-      // New syntax
-      let tmpResult = '<link rel="stylesheet"'
-      Object.keys(item).forEach(attribute => {
-        tmpResult += ` ${attribute}="${item[attribute]}"`
-      })
-      tmpResult += '>\n'
-      result += tmpResult
-    }
-  })
-  return result
-})
diff --git a/themes/chameleon/scripts/addJs.js b/themes/chameleon/scripts/addJs.js
deleted file mode 100644
index 0851732..0000000
--- a/themes/chameleon/scripts/addJs.js
+++ /dev/null
@@ -1,33 +0,0 @@
-'use strict'
-/* global hexo */
-
-/*
-* Helper to add <script src=""> with support of custom attributes
-* https://github.com/hexojs/hexo/pull/3681
-*/
-
-hexo.extend.helper.register('addJs', (...args) => {
-  let result = '\n'
-  let items = args
-
-  if (!Array.isArray(args)) {
-    items = [args]
-  }
-
-  items.forEach(item => {
-    // Old syntax
-    if (typeof item === 'string' || item instanceof String) {
-      result += `<script src="${item}"></script>\n`
-    } else {
-      // New syntax
-      let tmpResult = '<script'
-      Object.keys(item).forEach(attribute => {
-        if (item[attribute] === true) tmpResult += ' ' + attribute
-        else tmpResult += ` ${attribute}="${item[attribute]}"`
-      })
-      tmpResult += '></script>\n'
-      result += tmpResult
-    }
-  })
-  return result
-})