diff --git a/.eslintrc b/.eslintrc
index 86d102d90..d6a85f8e0 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -2,5 +2,9 @@
   "extends": ["vue"],
   "env": {
     "browser": true
+  },
+  "globals": {
+    "Docsify": true,
+    "$docsify": true
   }
 }
diff --git a/build/build.js b/build/build.js
index 96adf07f7..ceeb3c335 100644
--- a/build/build.js
+++ b/build/build.js
@@ -32,26 +32,26 @@ build({
   plugins: [commonjs(), nodeResolve()]
 })
 
-// build({
-//   entry: 'plugins/search.js',
-//   output: 'plugins/search.js',
-//   moduleName: 'D.Search'
-// })
+build({
+  entry: 'plugins/search/index.js',
+  output: 'plugins/search.js',
+  moduleName: 'D.Search'
+})
 
-// build({
-//   entry: 'plugins/ga.js',
-//   output: 'plugins/ga.js',
-//   moduleName: 'D.GA'
-// })
+build({
+  entry: 'plugins/ga.js',
+  output: 'plugins/ga.js',
+  moduleName: 'D.GA'
+})
 
 if (isProd) {
   build({
-    entry: 'index.js',
+    entry: 'core/index.js',
     output: 'docsify.min.js',
     plugins: [commonjs(), nodeResolve(), uglify()]
   })
   build({
-    entry: 'plugins/search.js',
+    entry: 'plugins/search/index.js',
     output: 'plugins/search.min.js',
     moduleName: 'D.Search',
     plugins: [uglify()]
diff --git a/docs/index.html b/docs/index.html
index 7748c821b..2b2f9d340 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -10,7 +10,7 @@
   <link rel="stylesheet" href="//unpkg.com/docsify/lib/themes/vue.css">
 </head>
 <body>
-  <nav>
+  <nav data-cloak>
     <a href="#/">En</a>
     <a href="#/zh-cn/">中文</a>
   </nav>
diff --git a/docs/plugins.md b/docs/plugins.md
index a4a188f15..7372356de 100644
--- a/docs/plugins.md
+++ b/docs/plugins.md
@@ -90,7 +90,7 @@ window.$docsify = {
     })
 
     hook.ready(function() {
-      // Called after initialization is complete. Only trigger once, no arguments.
+      // Called after initial completion, no arguments.
     })
   }
  ]
diff --git a/docs/zh-cn/plugins.md b/docs/zh-cn/plugins.md
index aeabf8d80..50590dcd0 100644
--- a/docs/zh-cn/plugins.md
+++ b/docs/zh-cn/plugins.md
@@ -85,7 +85,7 @@ window.$docsify = {
     })
 
     hook.ready(function() {
-      // 初始化完成后调用，只调用一次，没有参数。
+      // 初始化并第一次加完成数据后调用，没有参数。
     })
   }
  ]
diff --git a/package.json b/package.json
index 4426089cb..fd68380d3 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
     "build": "rm -rf lib themes && node build/build.js && mkdir lib/themes && mkdir themes && node build/build-css.js",
     "dev:build": "rm -rf lib themes && mkdir themes && node build/build.js --dev && node build/build-css.js --dev",
     "dev": "node app.js & nodemon -w src -e js,css --exec 'npm run dev:build'",
-    "test": "eslint src test"
+    "test": "eslint src"
   },
   "repository": {
     "type": "git",
diff --git a/src/core/config.js b/src/core/config.js
index f218e6dec..ceba2150c 100644
--- a/src/core/config.js
+++ b/src/core/config.js
@@ -39,4 +39,6 @@ if (script) {
   if (config.name === true) config.name = ''
 }
 
+window.$docsify = config
+
 export default config
diff --git a/src/core/event/scroll.js b/src/core/event/scroll.js
index 6b4eab7f4..67f29654e 100644
--- a/src/core/event/scroll.js
+++ b/src/core/event/scroll.js
@@ -45,8 +45,8 @@ export function scrollActiveSidebar () {
     const li = nav[last.getAttribute('data-id')]
 
     if (!li || li === active) return
-    if (active) active.classList.remove('active')
 
+    active && active.classList.remove('active')
     li.classList.add('active')
     active = li
 
@@ -79,7 +79,7 @@ export function scrollActiveSidebar () {
 
 export function scrollIntoView (id) {
   const section = dom.find('#' + id)
-  section && setTimeout(() => section.scrollIntoView(), 0)
+  section && section.scrollIntoView()
 }
 
 const scrollEl = dom.$.scrollingElement || dom.$.documentElement
diff --git a/src/core/fetch/index.js b/src/core/fetch/index.js
index 84654490a..61577ac28 100644
--- a/src/core/fetch/index.js
+++ b/src/core/fetch/index.js
@@ -57,15 +57,16 @@ export function fetchMixin (proto) {
       .then(text => this._renderCover(text))
   }
 
-  proto.$fetch = function () {
+  proto.$fetch = function (cb = noop) {
     this._fetchCover()
     this._fetch(result => {
       this.$resetEvents()
       callHook(this, 'doneEach')
+      cb()
     })
   }
 }
 
 export function initFetch (vm) {
-  vm.$fetch()
+  vm.$fetch(_ => callHook(vm, 'ready'))
 }
diff --git a/src/core/global-api.js b/src/core/global-api.js
index 83a328870..aa2ae0ee5 100644
--- a/src/core/global-api.js
+++ b/src/core/global-api.js
@@ -1,7 +1,7 @@
 import * as util from './util'
 import * as dom from './util/dom'
 import * as render from './render/compiler'
-import * as route from './route/util'
+import * as route from './route/hash'
 import { get } from './fetch/ajax'
 import marked from 'marked'
 import prism from 'prismjs'
diff --git a/src/core/index.js b/src/core/index.js
index 3a8b6be99..98b262e49 100644
--- a/src/core/index.js
+++ b/src/core/index.js
@@ -25,4 +25,5 @@ initGlobalAPI()
 /**
  * Run Docsify
  */
-new Docsify()
+
+setTimeout(_ => new Docsify(), 0)
diff --git a/src/core/init/index.js b/src/core/init/index.js
index 064704fa7..29782bf82 100644
--- a/src/core/init/index.js
+++ b/src/core/init/index.js
@@ -18,7 +18,6 @@ export function initMixin (proto) {
     initEvent(vm) // Bind events
     initRoute(vm) // Add hashchange eventListener
     initFetch(vm) // Fetch data
-    callHook(vm, 'ready')
   }
 }
 
diff --git a/src/core/render/compiler.js b/src/core/render/compiler.js
index d369c1d1e..5f4ad0585 100644
--- a/src/core/render/compiler.js
+++ b/src/core/render/compiler.js
@@ -5,7 +5,7 @@ import { genTree } from './gen-tree'
 import { slugify, clearSlugCache } from './slugify'
 import { emojify } from './emojify'
 import { toURL, parse } from '../route/hash'
-import { getBasePath, isResolvePath, getPath } from '../route/util'
+import { getBasePath, isAbsolutePath, getPath } from '../route/util'
 import { isFn, merge, cached } from '../util/core'
 
 let markdownCompiler = marked
@@ -87,7 +87,7 @@ renderer.image = function (href, title, text) {
   let url = href
   const titleHTML = title ? ` title="${title}"` : ''
 
-  if (!isResolvePath(href)) {
+  if (!isAbsolutePath(href)) {
     url = getPath(contentBase, href)
   }
 
diff --git a/src/core/render/index.js b/src/core/render/index.js
index c8df33749..45eaea0fa 100644
--- a/src/core/render/index.js
+++ b/src/core/render/index.js
@@ -5,7 +5,7 @@ import cssVars from '../util/polyfill/css-vars'
 import * as tpl from './tpl'
 import { markdown, sidebar, subSidebar, cover } from './compiler'
 import { callHook } from '../init/lifecycle'
-import { getBasePath, getPath, isResolvePath } from '../route/util'
+import { getBasePath, getPath, isAbsolutePath } from '../route/util'
 
 function executeScript () {
   const script = dom.findAll('.markdown-section>script')
@@ -101,7 +101,7 @@ export function renderMixin (proto) {
         let path = m[1]
 
         dom.toggleClass(el, 'add', 'has-mask')
-        if (isResolvePath(m[1])) {
+        if (isAbsolutePath(m[1])) {
           path = getPath(getBasePath(this.config.basePath), m[1])
         }
         el.style.backgroundImage = `url(${path})`
@@ -157,4 +157,5 @@ export function initRender (vm) {
     // Polyfll
     cssVars(config.themeColor)
   }
+  dom.toggleClass(dom.body, 'ready')
 }
diff --git a/src/core/route/hash.js b/src/core/route/hash.js
index 60e0164f4..281a5cd8f 100644
--- a/src/core/route/hash.js
+++ b/src/core/route/hash.js
@@ -1,5 +1,6 @@
 import { merge, cached } from '../util/core'
 import { parseQuery, stringifyQuery, cleanPath } from './util'
+export * from './util'
 
 function replaceHash (path) {
   const i = window.location.href.indexOf('#')
diff --git a/src/core/route/index.js b/src/core/route/index.js
index cd3973dbe..1dd09a976 100644
--- a/src/core/route/index.js
+++ b/src/core/route/index.js
@@ -1,10 +1,9 @@
 import { normalize, parse } from './hash'
-import { getBasePath, getPath } from './util'
+import { getBasePath, getPath, isAbsolutePath } from './util'
 import { on } from '../util/dom'
 
 function getAlias (path, alias) {
-  if (alias[path]) return getAlias(alias[path], alias)
-  return path
+  return alias[path] ? getAlias(alias[path], alias) : path
 }
 
 function getFileName (path) {
@@ -24,7 +23,7 @@ export function routeMixin (proto) {
     path = getAlias(path, config.alias)
     path = getFileName(path)
     path = path === '/README.md' ? (config.homepage || path) : path
-    path = getPath(base, path)
+    path = isAbsolutePath(path) ? path : getPath(base, path)
 
     return path
   }
diff --git a/src/core/route/util.js b/src/core/route/util.js
index c0f076351..3f742c86b 100644
--- a/src/core/route/util.js
+++ b/src/core/route/util.js
@@ -25,7 +25,7 @@ export function stringifyQuery (obj) {
   const qs = []
 
   for (const key in obj) {
-    qs.push(`${encode(key)}=${encode(obj[key])}`)
+    qs.push(`${encode(key)}=${encode(obj[key])}`.toLowerCase())
   }
 
   return qs.length ? `?${qs.join('&')}` : ''
@@ -41,8 +41,8 @@ export function getPath (...args) {
   return cleanPath(args.join('/'))
 }
 
-export const isResolvePath = cached(path => {
-  return /:|(\/{2})/.test(path)
+export const isAbsolutePath = cached(path => {
+  return /(:|(\/{2}))/.test(path)
 })
 
 export const getRoot = cached(path => {
diff --git a/src/plugins/ga.js b/src/plugins/ga.js
index 40c455f21..463f11f35 100644
--- a/src/plugins/ga.js
+++ b/src/plugins/ga.js
@@ -1,5 +1,4 @@
 // From https://github.com/egoist/vue-ga/blob/master/src/index.js
-
 function appendScript () {
   const script = document.createElement('script')
   script.async = true
@@ -24,19 +23,13 @@ function collect () {
   window.ga('send', 'pageview')
 }
 
-const install = function () {
-  if (install.installed) return
-  install.installed = true
-
+const install = function (hook) {
   if (!window.$docsify.ga) {
     console.error('[Docsify] ga is required.')
     return
   }
 
-  window.$docsify.plugins = [].concat(function (hook) {
-    hook.init(collect)
-    hook.beforeEach(collect)
-  }, window.$docsify.plugins)
+  hook.beforeEach(collect)
 }
 
-export default install()
+window.$docsify.plugins = [].concat(install, window.$docsify.plugins)
diff --git a/src/plugins/search.js b/src/plugins/search.js
deleted file mode 100644
index 0f0e762b1..000000000
--- a/src/plugins/search.js
+++ /dev/null
@@ -1,349 +0,0 @@
-let INDEXS = {}
-const CONFIG = {
-  placeholder: 'Type to search',
-  paths: 'auto',
-  maxAge: 86400000 // 1 day
-}
-
-const isObj = function (obj) {
-  return Object.prototype.toString.call(obj) === '[object Object]'
-}
-
-const escapeHtml = function (string) {
-  const entityMap = {
-    '&': '&amp;',
-    '<': '&lt;',
-    '>': '&gt;',
-    '"': '&quot;',
-    "'": '&#39;',
-    '/': '&#x2F;'
-  }
-
-  return String(string).replace(/[&<>"'\/]/g, s => entityMap[s])
-}
-
-/**
- * find all filepath from A tag
- */
-const getAllPaths = function () {
-  const paths = []
-
-  ;[].slice.call(document.querySelectorAll('a'))
-    .map(node => {
-      const href = node.href
-      if (/#\/[^#]*?$/.test(href)) {
-        const path = href.replace(/^[^#]+#/, '')
-
-        if (paths.indexOf(path) <= 0) paths.push(path)
-      }
-    })
-
-  return paths
-}
-
-/**
- * return file path
- */
-const genFilePath = function (path, basePath = window.$docsify.basePath) {
-  let filePath = /\/$/.test(path) ? `${path}README.md` : `${path}.md`
-
-  filePath = basePath + filePath
-
-  return filePath.replace(/\/+/g, '/')
-}
-
-/**
- * generate index
- */
-const genIndex = function (path, content = '') {
-  INDEXS[path] = { slug: '', title: '', body: '' }
-  let slug
-
-  content
-    // remove PRE and TEMPLATE tag
-    .replace(/<template[^>]*?>[\s\S]+?<\/template>/g, '')
-    // find all html tag
-    .replace(/<(\w+)([^>]*?)>([\s\S]+?)<\//g, (match, tag, attr, html) => {
-      // remove all html tag
-      const text = html.replace(/<[^>]+>/g, '')
-
-      // tag is headline
-      if (/^h\d$/.test(tag)) {
-        // <h1 id="xxx"></h1>
-        const id = attr.match(/id="(\S+)"/)[1]
-
-        slug = `#/${path}#${id}`.replace(/\/+/, '/')
-        INDEXS[slug] = { slug, title: text, body: '' }
-      } else {
-        if (!slug) return
-        // other html tag
-        if (!INDEXS[slug]) {
-          INDEXS[slug] = {}
-        } else {
-          if (INDEXS[slug].body && INDEXS[slug].body.length) {
-            INDEXS[slug].body += '\n' + text
-          } else {
-            INDEXS[slug].body = text
-          }
-        }
-      }
-    })
-}
-
-/**
- * component
- */
-class SearchComponent {
-  constructor () {
-    if (this.rendered) return
-
-    this.style()
-
-    const el = document.createElement('div')
-    const aside = document.querySelector('aside')
-
-    el.classList.add('search')
-    aside.insertBefore(el, aside.children[0])
-    this.render(el)
-    this.rendered = true
-    this.bindEvent()
-  }
-
-  style () {
-    const code = `
-      .sidebar {
-        padding-top: 0;
-      }
-
-      .search {
-        margin-bottom: 20px;
-        padding: 6px;
-        border-bottom: 1px solid #eee;
-      }
-
-      .search .results-panel {
-        display: none;
-      }
-
-      .search .results-panel.show {
-        display: block;
-      }
-
-      .search input {
-        outline: none;
-        border: none;
-        width: 100%;
-        padding: 7px;
-        line-height: 22px;
-        font-size: 14px;
-      }
-
-      .search h2 {
-        font-size: 17px;
-        margin: 10px 0;
-      }
-
-      .search a {
-        text-decoration: none;
-        color: inherit;
-      }
-
-      .search .matching-post {
-        border-bottom: 1px solid #eee;
-      }
-
-      .search .matching-post:last-child {
-        border-bottom: 0;
-      }
-
-      .search p {
-        font-size: 14px;
-        overflow: hidden;
-        text-overflow: ellipsis;
-        display: -webkit-box;
-        -webkit-line-clamp: 2;
-        -webkit-box-orient: vertical;
-      }
-
-      .search p.empty {
-        text-align: center;
-      }
-    `
-    const style = document.createElement('style')
-
-    style.innerHTML = code
-    document.head.appendChild(style)
-  }
-
-  render (dom) {
-    dom.innerHTML = `<input type="search" placeholder="${CONFIG.placeholder}" /><div class="results-panel"></div>`
-  }
-
-  bindEvent () {
-    const search = document.querySelector('.search')
-    const input = search.querySelector('.search input')
-    const panel = search.querySelector('.results-panel')
-
-    search.addEventListener('click', e => e.target.tagName !== 'A' && e.stopPropagation())
-    input.addEventListener('input', e => {
-      const target = e.target
-
-      if (target.value.trim() !== '') {
-        const matchingPosts = this.search(target.value)
-        let html = ''
-
-        matchingPosts.forEach(function (post, index) {
-          html += `
-          <div class="matching-post">
-            <h2><a href="${post.url}">${post.title}</a></h2>
-            <p>${post.content}</p>
-          </div>
-          `
-        })
-        if (panel.classList.contains('results-panel')) {
-          panel.classList.add('show')
-          panel.innerHTML = html || '<p class="empty">No Results!</p>'
-        }
-      } else {
-        if (panel.classList.contains('results-panel')) {
-          panel.classList.remove('show')
-          panel.innerHTML = ''
-        }
-      }
-    })
-  }
-
-  // From [weex website] https://weex-project.io/js/common.js
-  search (keywords) {
-    const matchingResults = []
-    const data = Object.keys(INDEXS).map(key => INDEXS[key])
-
-    keywords = keywords.trim().split(/[\s\-\，\\/]+/)
-
-    for (let i = 0; i < data.length; i++) {
-      const post = data[i]
-      let isMatch = false
-      let resultStr = ''
-      const postTitle = post.title && post.title.trim()
-      const postContent = post.body && post.body.trim()
-      const postUrl = post.slug || ''
-
-      if (postTitle !== '' && postContent !== '') {
-        keywords.forEach((keyword, i) => {
-          const regEx = new RegExp(keyword, 'gi')
-          let indexTitle = -1
-          let indexContent = -1
-
-          indexTitle = postTitle.search(regEx)
-          indexContent = postContent.search(regEx)
-
-          if (indexTitle < 0 && indexContent < 0) {
-            isMatch = false
-          } else {
-            isMatch = true
-            if (indexContent < 0) indexContent = 0
-
-            let start = 0
-            let end = 0
-
-            start = indexContent < 11 ? 0 : indexContent - 10
-            end = start === 0 ? 70 : indexContent + keyword.length + 60
-
-            if (end > postContent.length) end = postContent.length
-
-            const matchContent = '...' +
-              postContent
-                .substring(start, end)
-                .replace(regEx, `<em class="search-keyword">${keyword}</em>`) +
-                '...'
-
-            resultStr += matchContent
-          }
-        })
-
-        if (isMatch) {
-          const matchingPost = {
-            title: escapeHtml(postTitle),
-            content: resultStr,
-            url: postUrl
-          }
-
-          matchingResults.push(matchingPost)
-        }
-      }
-    }
-
-    return matchingResults
-  }
-}
-
-const searchPlugin = function () {
-  const isAuto = CONFIG.paths === 'auto'
-  const isExpired = localStorage.getItem('docsify.search.expires') < Date.now()
-
-  INDEXS = JSON.parse(localStorage.getItem('docsify.search.index'))
-
-  if (isExpired) {
-    INDEXS = {}
-  } else if (!isAuto) {
-    return
-  }
-
-  let count = 0
-  const paths = isAuto ? getAllPaths() : CONFIG.paths
-  const len = paths.length
-  const { load, marked, slugify } = window.Docsify.utils
-  const alias = window.$docsify.alias
-  const done = () => {
-    localStorage.setItem('docsify.search.expires', Date.now() + CONFIG.maxAge)
-    localStorage.setItem('docsify.search.index', JSON.stringify(INDEXS))
-  }
-
-  paths.forEach(path => {
-    if (INDEXS[path]) return count++
-    let route
-
-    // replace route
-    if (alias && alias[path]) {
-      route = genFilePath(alias[path] || path, '')
-    } else {
-      route = genFilePath(path)
-    }
-
-    load(route).then(content => {
-      genIndex(path, marked(content))
-      slugify.clear()
-      count++
-
-      if (len === count) done()
-    })
-  })
-}
-
-const install = function () {
-  if (install.installed) return
-  install.installed = true
-
-  const userConfig = window.$docsify.search
-  const isNil = window.Docsify.utils.isNil
-
-  if (Array.isArray(userConfig)) {
-    CONFIG.paths = userConfig
-  } else if (isObj(userConfig)) {
-    CONFIG.paths = Array.isArray(userConfig.paths) ? userConfig.paths : 'auto'
-    CONFIG.maxAge = isNil(userConfig.maxAge) ? CONFIG.maxAge : userConfig.maxAge
-    CONFIG.placeholder = userConfig.placeholder || CONFIG.placeholder
-  }
-
-  window.$docsify.plugins = [].concat(hook => {
-    const isAuto = CONFIG.paths === 'auto'
-
-    hook.ready(() => {
-      new SearchComponent()
-      !isAuto && searchPlugin()
-    })
-    isAuto && hook.doneEach(searchPlugin)
-  }, window.$docsify.plugins)
-}
-
-export default install()
diff --git a/src/plugins/search/component.js b/src/plugins/search/component.js
new file mode 100644
index 000000000..82a18845a
--- /dev/null
+++ b/src/plugins/search/component.js
@@ -0,0 +1,116 @@
+import { search } from './search'
+
+let dom
+
+function style () {
+  const code = `
+.sidebar {
+  padding-top: 0;
+}
+
+.search {
+  margin-bottom: 20px;
+  padding: 6px;
+  border-bottom: 1px solid #eee;
+}
+
+.search .results-panel {
+  display: none;
+}
+
+.search .results-panel.show {
+  display: block;
+}
+
+.search input {
+  outline: none;
+  border: none;
+  width: 100%;
+  padding: 7px;
+  line-height: 22px;
+  font-size: 14px;
+}
+
+.search h2 {
+  font-size: 17px;
+  margin: 10px 0;
+}
+
+.search a {
+  text-decoration: none;
+  color: inherit;
+}
+
+.search .matching-post {
+  border-bottom: 1px solid #eee;
+}
+
+.search .matching-post:last-child {
+  border-bottom: 0;
+}
+
+.search p {
+  font-size: 14px;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  display: -webkit-box;
+  -webkit-line-clamp: 2;
+  -webkit-box-orient: vertical;
+}
+
+.search p.empty {
+  text-align: center;
+}`
+  const style = dom.create('style', code)
+  dom.appendTo(dom.head, style)
+}
+
+function tpl (opts) {
+  const html =
+    `<input type="search" placeholder="${opts.placeholder}" />` +
+      '<div class="results-panel"></div>' +
+    '</div>'
+  const el = dom.create('div', html)
+  const aside = dom.find('aside')
+
+  dom.toggleClass(el, 'search')
+  dom.before(aside, el)
+}
+
+function bindEvents () {
+  const $search = dom.find('div.search')
+  const $input = dom.find($search, 'input')
+  const $panel = dom.find($search, '.results-panel')
+
+  // Prevent to Fold sidebar
+  dom.on($search, 'click',
+    e => e.target.tagName !== 'A' && e.stopPropagation())
+
+  dom.on($input, 'input', e => {
+    const value = e.target.value.trim()
+    if (!value) {
+      $panel.classList.remove('show')
+      $panel.innerHTML = ''
+    }
+    const matchs = search(value)
+
+    let html = ''
+
+    matchs.forEach(post => {
+      html += `<div class="matching-post">
+  <h2><a href="${post.url}">${post.title}</a></h2>
+  <p>${post.content}</p>
+</div>`
+    })
+
+    $panel.classList.add('show')
+    $panel.innerHTML = html || '<p class="empty">No Results!</p>'
+  })
+}
+
+export default function (opts) {
+  dom = Docsify.dom
+  style()
+  tpl(opts)
+  bindEvents()
+}
diff --git a/src/plugins/search/index.js b/src/plugins/search/index.js
new file mode 100644
index 000000000..ad6f6b780
--- /dev/null
+++ b/src/plugins/search/index.js
@@ -0,0 +1,31 @@
+import initComponet from './component'
+import { init as initSearch } from './search'
+
+const CONFIG = {
+  placeholder: 'Type to search',
+  paths: 'auto',
+  maxAge: 86400000 // 1 day
+}
+
+const install = function (hook, vm) {
+  const util = Docsify.util
+  const opts = vm.config.search
+
+  if (Array.isArray(opts)) {
+    CONFIG.paths = opts
+  } else if (typeof opts === 'object') {
+    CONFIG.paths = Array.isArray(opts.paths) ? opts.paths : 'auto'
+    CONFIG.maxAge = util.isPrimitive(opts.maxAge) ? opts.maxAge : CONFIG.maxAge
+    CONFIG.placeholder = opts.placeholder || CONFIG.placeholder
+  }
+
+  const isAuto = CONFIG.paths === 'auto'
+
+  hook.ready(_ => {
+    initComponet(CONFIG)
+    isAuto && initSearch(CONFIG, vm)
+  })
+  !isAuto && hook.doneEach(_ => initSearch(CONFIG, vm))
+}
+
+window.$docsify.plugins = [].concat(install, window.$docsify.plugins)
diff --git a/src/plugins/search/search.js b/src/plugins/search/search.js
new file mode 100644
index 000000000..627f043c2
--- /dev/null
+++ b/src/plugins/search/search.js
@@ -0,0 +1,156 @@
+let INDEXS = {}
+let helper
+
+function escapeHtml (string) {
+  const entityMap = {
+    '&': '&amp;',
+    '<': '&lt;',
+    '>': '&gt;',
+    '"': '&quot;',
+    '\'': '&#39;',
+    '/': '&#x2F;'
+  }
+
+  return String(string).replace(/[&<>"'\/]/g, s => entityMap[s])
+}
+
+function getAllPaths () {
+  const paths = []
+
+  helper.dom.findAll('a')
+    .map(node => {
+      const href = node.href
+      const originHref = node.getAttribute('href')
+      const path = helper.route.parse(href).path
+
+      if (paths.indexOf(path) === -1 &&
+        !helper.route.isAbsolutePath(originHref)) {
+        paths.push(path)
+      }
+    })
+
+  return paths
+}
+
+function saveData (maxAge) {
+  localStorage.setItem('docsify.search.expires', Date.now() + maxAge)
+  localStorage.setItem('docsify.search.index', JSON.stringify(INDEXS))
+}
+
+export function genIndex (path, content = '') {
+  const tokens = window.marked.lexer(content)
+  const toURL = Docsify.route.toURL
+  let slug
+
+  tokens.forEach(token => {
+    if (token.type === 'heading' && token.depth === 1) {
+      slug = toURL(path, { id: token.text })
+      INDEXS[slug] = { slug, title: token.text, body: '' }
+    } else {
+      if (!slug) return
+      if (!INDEXS[slug]) {
+        INDEXS[slug] = { slug, title: '', body: '' }
+      } else {
+        if (INDEXS[slug].body) {
+          INDEXS[slug].body += ('\n' + token.text)
+        } else {
+          INDEXS[slug].body = token.text
+        }
+      }
+    }
+  })
+}
+
+export function search (keywords) {
+  const matchingResults = []
+  const data = Object.keys(INDEXS).map(key => INDEXS[key])
+
+  keywords = keywords.trim().split(/[\s\-\，\\/]+/)
+
+  for (let i = 0; i < data.length; i++) {
+    const post = data[i]
+    let isMatch = false
+    let resultStr = ''
+    const postTitle = post.title && post.title.trim()
+    const postContent = post.body && post.body.trim()
+    const postUrl = post.slug || ''
+
+    if (postTitle !== '' && postContent !== '') {
+      keywords.forEach((keyword, i) => {
+        const regEx = new RegExp(keyword, 'gi')
+        let indexTitle = -1
+        let indexContent = -1
+
+        indexTitle = postTitle.search(regEx)
+        indexContent = postContent.search(regEx)
+
+        if (indexTitle < 0 && indexContent < 0) {
+          isMatch = false
+        } else {
+          isMatch = true
+          if (indexContent < 0) indexContent = 0
+
+          let start = 0
+          let end = 0
+
+          start = indexContent < 11 ? 0 : indexContent - 10
+          end = start === 0 ? 70 : indexContent + keyword.length + 60
+
+          if (end > postContent.length) end = postContent.length
+
+          const matchContent = '...' +
+            postContent
+              .substring(start, end)
+              .replace(regEx, `<em class="search-keyword">${keyword}</em>`) +
+              '...'
+
+          resultStr += matchContent
+        }
+      })
+
+      if (isMatch) {
+        const matchingPost = {
+          title: escapeHtml(postTitle),
+          content: resultStr,
+          url: postUrl
+        }
+
+        matchingResults.push(matchingPost)
+      }
+    }
+  }
+
+  return matchingResults
+}
+
+export function init (config, vm) {
+  helper = Docsify
+
+  const isAuto = config.paths === 'auto'
+  const isExpired = localStorage.getItem('docsify.search.expires') < Date.now()
+
+  INDEXS = JSON.parse(localStorage.getItem('docsify.search.index'))
+
+  if (isExpired) {
+    INDEXS = {}
+  } else if (!isAuto) {
+    return
+  }
+
+  const paths = isAuto ? getAllPaths() : config.paths
+  const len = paths.length
+  let count = 0
+
+  paths.forEach(path => {
+    if (INDEXS[path]) return count++
+
+    path = vm.$getFile(path)
+    helper
+      .get(path)
+      .then(result => {
+        genIndex(path, result)
+        len === ++count && saveData(config.maxAge)
+      })
+  })
+}
+
