diff --git a/src/lib/utils/copy.ts b/src/lib/utils/copy.ts
new file mode 100644
index 0000000..0416973
--- /dev/null
+++ b/src/lib/utils/copy.ts
@@ -0,0 +1,19 @@
+export async function copyText(str: string) {
+  if (navigator.clipboard && navigator.permissions) {
+    await navigator.clipboard.writeText(str)
+  }
+  else {
+    const textArea = document.createElement('textArea') as HTMLTextAreaElement
+    textArea.value = str
+    textArea.style.width = '0'
+    textArea.style.position = 'fixed'
+    textArea.style.left = '-999px'
+    textArea.style.top = '10px'
+    textArea.setAttribute('readonly', 'readonly')
+    document.body.appendChild(textArea)
+
+    textArea.select()
+    document.execCommand('copy')
+    document.body.removeChild(textArea)
+  }
+}
diff --git a/src/routes/+layout.svelte b/src/routes/+layout.svelte
index 5b1f6c4..84a4020 100644
--- a/src/routes/+layout.svelte
+++ b/src/routes/+layout.svelte
@@ -1,5 +1,5 @@
 <script lang="ts">
-  import { KIcon } from '@ikun-ui/core'
+  import { KAffix, KIcon } from '@ikun-ui/core'
 
   const toggle = () => {
     window.document.documentElement.classList.toggle('dark')
@@ -7,10 +7,17 @@
 </script>
 
 <header>
-  <div class="p4 fbc shadow dark:shadow-light-50">
-    <div class="font-500">XParCai Tools</div>
-    <KIcon class="i-carbon:sun dark:i-carbon:moon" on:click={toggle}></KIcon>
-  </div>
+  <KAffix cls="w-full z-100" top={0}>
+    <div
+      class="h-56px px-4 fbc shadow bg-white dark:(shadow-light-50 bg-black)"
+    >
+      <a href="/">
+        <div class="font-500">XParCai Tools</div>
+      </a>
+      <KIcon class="i-carbon:sun dark:i-carbon:moon" on:click={toggle}></KIcon>
+    </div>
+  </KAffix>
+  <div class="w-full h-56px"></div>
 </header>
 
 <main class="p4 w-1200px ma">
diff --git a/src/routes/json-to-ts-type/+page.svelte b/src/routes/json-to-ts-type/+page.svelte
index 0b639cb..103c40c 100644
--- a/src/routes/json-to-ts-type/+page.svelte
+++ b/src/routes/json-to-ts-type/+page.svelte
@@ -1,13 +1,14 @@
 <script lang="ts">
   import {
+    KAlert,
     KButton,
     KCard,
     KCheckbox,
-    KCheckboxGroup,
     KCollapse,
     KCollapseWrapper,
     KDivider,
     KInput,
+    KMessage,
   } from '@ikun-ui/core'
   import {
     isArray,
@@ -19,24 +20,34 @@
     toLinesCase,
     toRawType,
   } from '@vtrbo/utils'
-  import jsonStr from './test-json.json?raw'
+  import { copyText } from '$lib/utils/copy'
+
+  let jsonCode = ''
+  type TsType = [string, [boolean, string, any][]]
+  let tsTypes: TsType[] = []
+
+  let isChoose = true
 
-  let jsonCode = jsonStr
-  const tsTypes: [string, [boolean, string, any][]][] = []
   function isJsonStr(str: string) {
     if (!isString(str)) {
       return false
     }
     try {
-      const jsonObj = JSON.parse(str)
+      const jsonObj = getJsonObj(str)
       return isObject(jsonObj)
     } catch (e) {
       return false
     }
   }
+
+  function getJsonObj(str: string) {
+    // eslint-disable-next-line no-new-func
+    return new Function(`return ${str}`)()
+  }
+
   function parseJson(str: string, name: string = 'XParCai') {
     if (isJsonStr(str)) {
-      const jsonObj = JSON.parse(str)
+      const jsonObj = getJsonObj(str)
       const kv: [boolean, string, any][] = []
       for (const key in jsonObj) {
         if (isArray(jsonObj[key])) {
@@ -60,72 +71,101 @@
         }
       }
       tsTypes.unshift([name, kv])
+    } else {
+      tsTypes = []
     }
   }
 
+  function generateTsType(tsTypesArr: TsType[]) {
+    if (tsTypesArr.length > 0) {
+      let typeStrArr: string[] = []
+      tsTypesArr.forEach(([k, v]) => {
+        typeStrArr.push(`interface ${k} {`)
+        v.forEach(([vc, vk, vv]) => {
+          const typeStr = `  ${vk}${isChoose || vc ? '?' : ''}: ${vv};`
+          typeStrArr.push(typeStr)
+        })
+        typeStrArr.push('}')
+      })
+      copyText(typeStrArr.join('\r\n'))
+    } else {
+      copyText('')
+    }
+    KMessage.success({
+      content: '复制成功',
+      close: false,
+    })
+  }
+
   $: {
     tsTypes.length = 0
     parseJson(jsonCode)
   }
-
-  let isChoose = true
-  let chooseGroup = []
 </script>
 
 <KCard shadow="never">
   <div slot="header">
-    <div class="flex items-center justify-end">
-      <KCheckbox
-        cls="select-none"
-        value={isChoose}
-        on:updateValue={(e) => (isChoose = e.detail)}
-      >
-        是否可选
-      </KCheckbox>
+    <div class="flex items-center justify-between">
+      <div>JSON TO TS TYPE</div>
     </div>
   </div>
   <KCard shadow="never" title="JSON格式的文本" cls="bg-ikun-light-500">
-    <KInput bind:value={jsonCode} type="textarea" rows={10}></KInput>
+    {#if !isJsonStr(jsonCode)}
+      <KAlert
+        title="请确保输入JSON字符串"
+        type="error"
+        closable={false}
+        cls="mb4"
+      />
+    {/if}
+    <KInput bind:value={jsonCode} type="textarea" rows={6}></KInput>
   </KCard>
   {#if tsTypes.length > 0}
     <KDivider contentPosition="left">
-      <KButton cls="min-w-80px">复制</KButton>
+      <KButton
+        cls="min-w-80px inline-block"
+        on:click={() => generateTsType(tsTypes)}>复制</KButton
+      >
+      <KCheckbox
+        cls="select-none"
+        value={isChoose}
+        on:updateValue={(e) => (isChoose = e.detail)}
+      >
+        全部可选
+      </KCheckbox>
     </KDivider>
     <KCard shadow="never" title="可以修改后再复制" cls="bg-ikun-light-500">
       <KCollapseWrapper accordion>
-        <KCheckboxGroup
-          {chooseGroup}
-          on:updateValue={(e) => (chooseGroup = e.detail)}
-        >
-          {#each tsTypes as [tsTypeKey, tsTypeValue], tsTypeUid}
-            <KCollapse uid={`collapse-${tsTypeUid}`} title={tsTypeKey} show>
-              <div slot="content">
-                {#each tsTypeValue as [optional, key, value], uid}
-                  <KInput cls="w-full my-8px first:mt-0 last:mb-0" bind:value>
-                    <div
-                      class="flex items-center text-nowrap mr-8px"
-                      slot="prefix"
-                    >
-                      <span>{key}</span>
-                      {#if isChoose || optional}
-                        <span>?</span>
-                      {/if}
-                      <span>: </span>
-                      {#if !isChoose}
-                        <KCheckbox
-                          cls="flex ml-8px"
-                          uid={`${tsTypeKey}-${tsTypeUid}-${key}-${uid}`}
-                        >
-                          可选
-                        </KCheckbox>
-                      {/if}
-                    </div>
-                  </KInput>
-                {/each}
-              </div>
-            </KCollapse>
-          {/each}
-        </KCheckboxGroup>
+        {#each tsTypes as [tsTypeKey, tsTypeValue], tsTypeUid}
+          <KCollapse uid={`collapse-${tsTypeUid}`} title={tsTypeKey} show>
+            <div slot="content">
+              {#each tsTypeValue as [optional, key, value], uid}
+                <KInput cls="w-full my-8px first:mt-0 last:mb-0" bind:value>
+                  <div
+                    class="flex items-center text-nowrap mr-8px"
+                    slot="prefix"
+                  >
+                    <span>{key}</span>
+                    {#if isChoose || optional}
+                      <span>?</span>
+                    {/if}
+                    <span>: </span>
+                    {#if !isChoose}
+                      <KCheckbox
+                        cls="flex ml-8px"
+                        uid={`${tsTypeKey}-${tsTypeUid}-${key}-${uid}`}
+                        bind:value={optional}
+                        on:updateValue={(e) => (optional = e.detail)}
+                      >
+                        可选
+                      </KCheckbox>
+                    {/if}
+                  </div>
+                </KInput>
+              {/each}
+            </div>
+          </KCollapse>
+        {/each}
       </KCollapseWrapper>
     </KCard>
   {/if}