diff --git a/packages/playground/src/App.tsx b/packages/playground/src/App.tsx
index 42d93bb..4c1c46f 100644
--- a/packages/playground/src/App.tsx
+++ b/packages/playground/src/App.tsx
@@ -7,10 +7,11 @@ import { ThemeProvider } from '@/components/darkmode-toggle/theme-provider'
 import { StatementProvider } from '@/contexts/statement-context-provider'
 import { FilesProvider } from '@/contexts/files-context-provider'
 import { SchemaProvider } from '@/contexts/schema-context-provider'
+import { ChatProvider } from '@/contexts/chat-context-provider'
 
+import { EditorExampleWithSelect } from '@/examples/editor-example-with-select'
 import { EditorExample } from '@/examples/editor-example'
-import { ChatProvider } from './contexts/chat-context-provider'
-import { EditorExampleWithSelect } from './examples/editor-example-with-select'
+import { UrlStateProvider } from '@/hooks/use-url-state'
 
 const queryClient = new QueryClient({
   defaultOptions: {
@@ -44,17 +45,15 @@ function App() {
   const params = new URLSearchParams(window.location.search)
   const example = params.get('example')
   const withSelect = params.get('with_select')
-
   const editorTheme = params.get('theme') ?? 'oneDark'
 
   if (example !== null) {
     if (withSelect !== null) {
       return (
         <ThemeProvider>
-          <EditorExampleWithSelect
-            defExample={example}
-            defTheme={editorTheme}
-          />
+          <UrlStateProvider>
+            <EditorExampleWithSelect />
+          </UrlStateProvider>
         </ThemeProvider>
       )
     }
diff --git a/packages/playground/src/contexts/files-context-provider.tsx b/packages/playground/src/contexts/files-context-provider.tsx
index fd47907..fc24788 100644
--- a/packages/playground/src/contexts/files-context-provider.tsx
+++ b/packages/playground/src/contexts/files-context-provider.tsx
@@ -1,4 +1,4 @@
-import React, { useMemo } from 'react'
+import React, { useMemo, useState } from 'react'
 import {
   addFile,
   delFile,
@@ -18,9 +18,9 @@ function FilesLoader() {
 }
 
 export function FilesProvider(props: { children: React.ReactNode }) {
-  const [allFiles, setAllFiles] = React.useState<IFile[]>([])
-  const [openedFiles, setOpenedFiles] = React.useState<IFile[]>([])
-  const [activeFileId, setActiveFileId] = React.useState<string | null>(null)
+  const [allFiles, setAllFiles] = useState<IFile[]>([])
+  const [openedFiles, setOpenedFiles] = useState<IFile[]>([])
+  const [activeFileId, setActiveFileId] = useState<string | null>(null)
 
   const ctxValue = useMemo(
     () => ({
diff --git a/packages/playground/src/contexts/schema-context-provider.tsx b/packages/playground/src/contexts/schema-context-provider.tsx
index 30e4a51..319dace 100644
--- a/packages/playground/src/contexts/schema-context-provider.tsx
+++ b/packages/playground/src/contexts/schema-context-provider.tsx
@@ -1,4 +1,4 @@
-import React, { useMemo } from 'react'
+import React, { useMemo, useState } from 'react'
 
 import { getSchema } from '@/api/tidbcloud/schema-api'
 import { SchemaContext, SchemaRes } from './schema-context'
@@ -10,7 +10,7 @@ function SchemaLoader() {
 }
 
 export function SchemaProvider(props: { children: React.ReactNode }) {
-  const [schema, setSchema] = React.useState<SchemaRes | null>(null)
+  const [schema, setSchema] = useState<SchemaRes | null>(null)
 
   const ctxValue = useMemo(
     () => ({ loadSchema: getSchema, schema, setSchema }),
diff --git a/packages/playground/src/contexts/statement-context-provider.tsx b/packages/playground/src/contexts/statement-context-provider.tsx
index 1c6975e..7915d75 100644
--- a/packages/playground/src/contexts/statement-context-provider.tsx
+++ b/packages/playground/src/contexts/statement-context-provider.tsx
@@ -1,4 +1,4 @@
-import React, { useMemo } from 'react'
+import React, { useMemo, useState } from 'react'
 
 import { SqlStatement } from '@tidbcloud/codemirror-extension-sql-parser'
 
@@ -6,7 +6,7 @@ import { runSQL } from '@/api/tidbcloud/statement-api'
 import { StatementContext } from './statement-context'
 
 export function StatementProvider(props: { children: React.ReactNode }) {
-  const [runResult, setRunResult] = React.useState<any>({})
+  const [runResult, setRunResult] = useState<any>({})
 
   const runStatement = (_fileId: string, statement: SqlStatement) => {
     return runSQL({ database: statement.database, sql: statement.content })
diff --git a/packages/playground/src/examples/editor-example-with-select.tsx b/packages/playground/src/examples/editor-example-with-select.tsx
index 047b9a9..21ca97a 100644
--- a/packages/playground/src/examples/editor-example-with-select.tsx
+++ b/packages/playground/src/examples/editor-example-with-select.tsx
@@ -1,4 +1,4 @@
-import { useEffect, useState } from 'react'
+import { useEffect } from 'react'
 
 import { EnterFullScreenIcon, GitHubLogoIcon } from '@radix-ui/react-icons'
 
@@ -15,16 +15,13 @@ import { Button } from '@/components/ui/button'
 import { useTheme } from '@/components/darkmode-toggle/theme-provider'
 
 import { EditorExample } from './editor-example'
+import { useExampleUrlState } from './url-state'
+
+function ExampleSelect() {
+  const { example, setExample } = useExampleUrlState()
 
-function ExampleSelect({
-  value,
-  onChange
-}: {
-  value: string
-  onChange: (v: string) => void
-}) {
   return (
-    <Select value={value} onValueChange={onChange}>
+    <Select value={example} onValueChange={setExample}>
       <SelectTrigger className="w-[180px]">
         <SelectValue placeholder="Select an extension" />
       </SelectTrigger>
@@ -46,15 +43,11 @@ function ExampleSelect({
   )
 }
 
-function ThemeSelect({
-  value,
-  onChange
-}: {
-  value: string
-  onChange: (v: string) => void
-}) {
+function ThemeSelect() {
+  const { theme, setTheme } = useExampleUrlState()
+
   return (
-    <Select value={value} onValueChange={onChange}>
+    <Select value={theme} onValueChange={setTheme}>
       <SelectTrigger className="w-[120px]">
         <SelectValue placeholder="Select a theme" />
       </SelectTrigger>
@@ -70,34 +63,11 @@ function ThemeSelect({
   )
 }
 
-function updateUrlParam(key: string, value: string) {
-  const url = new URL(window.location.href)
-  const params = new URLSearchParams(url.search)
-  params.set(key, value)
-  window.history.replaceState({}, '', `${url.pathname}?${params.toString()}`)
-}
+export function EditorExampleWithSelect() {
+  const { example, theme: editorTheme } = useExampleUrlState()
 
-export function EditorExampleWithSelect({
-  defExample,
-  defTheme
-}: {
-  defExample: string
-  defTheme: string
-}) {
-  const [example, setExample] = useState(defExample)
-  const [editorTheme, setEditorTheme] = useState(defTheme)
   const { setTheme: setAppTheme } = useTheme()
 
-  function onExampleChange(v: string) {
-    setExample(v)
-    updateUrlParam('example', v)
-  }
-
-  function onThemeChange(v: string) {
-    setEditorTheme(v)
-    updateUrlParam('theme', v)
-  }
-
   useEffect(() => {
     setAppTheme(
       editorTheme === 'oneDark' || editorTheme === 'dark' ? 'dark' : 'light'
@@ -113,8 +83,8 @@ export function EditorExampleWithSelect({
           </h1>
 
           <div className="mt-10 flex items-center gap-1">
-            <ExampleSelect value={example} onChange={onExampleChange} />
-            <ThemeSelect value={editorTheme} onChange={onThemeChange} />
+            <ExampleSelect />
+            <ThemeSelect />
             <Button variant="ghost" size="icon">
               <a
                 href={`/?example=${example}&theme=${editorTheme}`}
diff --git a/packages/playground/src/examples/url-state.ts b/packages/playground/src/examples/url-state.ts
new file mode 100644
index 0000000..b192f2b
--- /dev/null
+++ b/packages/playground/src/examples/url-state.ts
@@ -0,0 +1,27 @@
+import { useUrlState } from '@/hooks/use-url-state'
+import { useCallback } from 'react'
+
+type ExampleUrlState = Partial<
+  Record<'example' | 'with_select' | 'theme', string>
+>
+
+export function useExampleUrlState() {
+  const [queryParams, setQueryParams] = useUrlState<ExampleUrlState>()
+
+  // example
+  const example = queryParams.example
+  const setExample = useCallback((v: string) => {
+    setQueryParams({ example: v })
+  }, [])
+
+  // theme
+  const theme = queryParams.theme || 'oneDark'
+  const setTheme = useCallback((v: string) => {
+    setQueryParams({ theme: v })
+  }, [])
+
+  // with_select
+  const withSelect = !!queryParams.with_select
+
+  return { example, setExample, theme, setTheme, withSelect }
+}
diff --git a/packages/playground/src/hooks/use-url-state.tsx b/packages/playground/src/hooks/use-url-state.tsx
new file mode 100644
index 0000000..ac740cd
--- /dev/null
+++ b/packages/playground/src/hooks/use-url-state.tsx
@@ -0,0 +1,94 @@
+import { createContext, useContext, useMemo, useState } from 'react'
+
+type UrlStateCtxValue = {
+  urlSearch: string
+  setUrlSearch: (v: string) => void
+}
+
+const UrlStateContext = createContext<UrlStateCtxValue | null>(null)
+
+const useUrlStateContext = () => {
+  const context = useContext(UrlStateContext)
+
+  if (!context) {
+    throw new Error('useUrlStateContext must be used within a provider')
+  }
+
+  return context
+}
+
+type UrlStateProviderOptions = {
+  getUrlParams: () => string
+  updateUrlParams: (p: string) => void
+}
+
+const defaultOptions: UrlStateProviderOptions = {
+  getUrlParams() {
+    const url = new URL(window.location.href)
+    return url.search
+  },
+  updateUrlParams(p) {
+    const url = new URL(window.location.href)
+    window.history.replaceState({}, '', `${url.pathname}?${p}`)
+  }
+}
+
+export function UrlStateProvider(props: {
+  children: React.ReactNode
+  options?: UrlStateProviderOptions
+}) {
+  const opt = props.options || defaultOptions
+  const [urlSearch, _setUrlSearch] = useState(opt.getUrlParams())
+
+  const ctxValue = useMemo(
+    () => ({
+      urlSearch,
+      setUrlSearch: (v: string) => {
+        opt.updateUrlParams(v)
+        _setUrlSearch(v)
+      }
+    }),
+    [urlSearch]
+  )
+
+  return (
+    <UrlStateContext.Provider value={ctxValue}>
+      {props.children}
+    </UrlStateContext.Provider>
+  )
+}
+
+//----------------------
+
+type UrlState = Partial<Record<string, string>>
+type UrlStateObj<T extends UrlState = UrlState> = {
+  [key in keyof T]: string
+}
+
+export function useUrlState<T extends UrlState = UrlState>(): [
+  UrlStateObj<T>,
+  (s: UrlStateObj<T>) => void
+] {
+  const { urlSearch, setUrlSearch } = useUrlStateContext()
+
+  const searchParams = new URLSearchParams(urlSearch)
+  const paramsObj: any = {}
+  searchParams.forEach((v, k) => {
+    paramsObj[k] = v
+  })
+  const queryParams = paramsObj as UrlStateObj<T>
+
+  function setQueryParams(s: UrlStateObj<T>) {
+    const searchParams = new URLSearchParams(urlSearch)
+    Object.keys(s).forEach((k) => {
+      if (s[k]) {
+        searchParams.set(k, s[k])
+      } else {
+        searchParams.delete(k)
+      }
+    })
+    setUrlSearch(searchParams.toString())
+  }
+
+  return [queryParams, setQueryParams] as const
+}