diff --git a/package.json b/package.json
index b03be03..48d8092 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,7 @@
     "echarts": "^5.4.3",
     "echarts-gl": "^2.0.9",
     "echarts-liquidfill": "^3.1.0",
-    "esbuild-wasm": "^0.19.5",
+    "esbuild-wasm": "^0.19.2",
     "eslint": "^7.32.0",
     "eslint-plugin-prettier": "^3.4.1",
     "eslint-plugin-vue": "^8.7.1",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index fb6afed..0b84cb8 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -80,8 +80,8 @@ devDependencies:
     specifier: ^3.1.0
     version: 3.1.0(echarts@5.4.3)
   esbuild-wasm:
-    specifier: ^0.19.5
-    version: 0.19.5
+    specifier: ^0.19.2
+    version: 0.19.2
   eslint:
     specifier: ^7.32.0
     version: 7.32.0
@@ -4239,8 +4239,8 @@ packages:
     resolution: {integrity: sha512-JUFAyicQV9mXc3YRxPnDlrfBKpqt6hUYzz9/boprUJHs4e4KVr3XwOF70doO6gwXUor6EWZJAyWAfKki84t20Q==}
     dev: true
 
-  /esbuild-wasm@0.19.5:
-    resolution: {integrity: sha512-7zmLLn2QCj93XfMmHtzrDJ1UBuOHB2CZz1ghoCEZiRajxjUvHsF40PnbzFIY/pmesqPRaEtEWii0uzsTbnAgrA==}
+  /esbuild-wasm@0.19.2:
+    resolution: {integrity: sha512-ak2XIIJKby+Uo3Iqh8wtw4pn2uZcnfLgtcmBHIgkShpun5ZIJsFigWXp7uLt7gXk3QAOCMmv0TSsIxD5qdn+Vw==}
     engines: {node: '>=12'}
     hasBin: true
     dev: true
diff --git a/src/demo/CodeGen.vue b/src/demo/CodeGen.vue
index fc9c68e..ca3ffa5 100644
--- a/src/demo/CodeGen.vue
+++ b/src/demo/CodeGen.vue
@@ -81,6 +81,42 @@ onMounted(async () => {
 
   initializing.value = false;
 
+  optionCode.value = `{
+  title: {
+    text: 'Referer of a Website',
+    subtext: 'Fake Data',
+    left: 'center'
+  },
+  tooltip: {
+    trigger: 'item'
+  },
+  legend: {
+    orient: 'vertical',
+    left: 'left'
+  },
+  series: [
+    {
+      name: 'Access From',
+      type: 'pie',
+      radius: '50%',
+      data: [
+        { value: 1048, name: 'Search Engine' },
+        { value: 735, name: 'Direct' },
+        { value: 580, name: 'Email' },
+        { value: 484, name: 'Union Ads' },
+        { value: 300, name: 'Video Ads' }
+      ],
+      emphasis: {
+        itemStyle: {
+          shadowBlur: 10,
+          shadowOffsetX: 0,
+          shadowColor: 'rgba(0, 0, 0, 0.5)'
+        }
+      }
+    }
+  ]
+}`;
+
   await nextTick();
 
   source.value?.focus();
@@ -238,6 +274,7 @@ onBeforeUnmount(() => {
           "
           :disabled="initializing"
           autofocus
+          spellcheck="false"
         ></textarea>
         <div class="import-code" @copy="trackCopy('system')">
           <code-highlight