diff --git a/example/App.tsx b/example/App.tsx
index 76b027a..1715988 100644
--- a/example/App.tsx
+++ b/example/App.tsx
@@ -37,6 +37,9 @@ export default defineComponent({
 
     const onActiveChange = (key: string) => {
       state.activeKey = key;
+      if (!state.opened.includes(key)) {
+        state.opened.push(key);
+      }
     };
 
     return {
diff --git a/example/Basic.vue b/example/Basic.vue
index 9f1655b..4bfde82 100644
--- a/example/Basic.vue
+++ b/example/Basic.vue
@@ -18,6 +18,10 @@
           <label>showLine</label>
           <input v-model="state.showLine" type="checkbox" />
         </div>
+        <div>
+          <label>showLineNumber</label>
+          <input v-model="state.showLineNumber" type="checkbox" />
+        </div>
         <div>
           <label>showDoubleQuotes</label>
           <input v-model="state.showDoubleQuotes" type="checkbox" />
@@ -58,9 +62,11 @@
         :show-double-quotes="state.showDoubleQuotes"
         :show-length="state.showLength"
         :show-line="state.showLine"
+        :show-line-number="state.showLineNumber"
         :collapsed-on-click-brackets="state.collapsedOnClickBrackets"
         :custom-value-formatter="state.useCustomLinkFormatter ? customLinkFormatter : null"
         :show-icon="state.showIcon"
+        style="position: relative"
       />
     </div>
   </div>
@@ -85,9 +91,6 @@ const defaultData = {
         'Traffic paradise: How to design streets for people and unmanned vehicles in the future?',
       source: 'Netease smart',
       link: 'http://netease.smart/traffic-paradise/1235',
-      author: {
-        names: ['Daniel', 'Mike', 'John'],
-      },
     },
     {
       news_id: 51182,
@@ -110,6 +113,7 @@ export default defineComponent({
       data: defaultData,
       showLength: false,
       showLine: true,
+      showLineNumber: false,
       showDoubleQuotes: true,
       collapsedOnClickBrackets: true,
       useCustomLinkFormatter: false,
diff --git a/example/Editable.vue b/example/Editable.vue
index 04cd41f..97bf547 100644
--- a/example/Editable.vue
+++ b/example/Editable.vue
@@ -15,8 +15,8 @@
           <input v-model="state.showLine" type="checkbox" />
         </div>
         <div>
-          <label>showDoubleQuotes</label>
-          <input v-model="state.showDoubleQuotes" type="checkbox" />
+          <label>showLineNumber</label>
+          <input v-model="state.showLineNumber" type="checkbox" />
         </div>
         <div>
           <label>editable</label>
@@ -44,9 +44,10 @@
       <vue-json-pretty
         v-model:data="state.data"
         :deep="state.deep"
-        :show-double-quotes="state.showDoubleQuotes"
+        :show-double-quotes="true"
         :show-length="state.showLength"
         :show-line="state.showLine"
+        :show-line-number="state.showLineNumber"
         :editable="state.editable"
         :editable-trigger="state.editableTrigger"
       />
@@ -85,7 +86,7 @@ const defaultData = {
 };
 
 export default defineComponent({
-  name: 'SelectControl',
+  name: 'Editable',
   components: {
     VueJsonPretty,
   },
@@ -95,7 +96,7 @@ export default defineComponent({
       data: defaultData,
       showLength: false,
       showLine: true,
-      showDoubleQuotes: true,
+      showLineNumber: false,
       editable: true,
       editableTrigger: 'click',
       deep: 3,
diff --git a/example/SelectControl.vue b/example/SelectControl.vue
index 3a57111..87c551d 100644
--- a/example/SelectControl.vue
+++ b/example/SelectControl.vue
@@ -6,6 +6,10 @@
 
       <h3>Options:</h3>
       <div class="options">
+        <div>
+          <label>showIcon</label>
+          <input v-model="state.showIcon" type="checkbox" />
+        </div>
         <div>
           <label>selectableType</label>
           <select v-model="state.selectableType">
@@ -34,8 +38,8 @@
           <input v-model="state.showLine" type="checkbox" />
         </div>
         <div>
-          <label>showDoubleQuotes</label>
-          <input v-model="state.showDoubleQuotes" type="checkbox" />
+          <label>showLineNumber</label>
+          <input v-model="state.showLineNumber" type="checkbox" />
         </div>
         <div>
           <label>highlightSelectedNode</label>
@@ -53,10 +57,6 @@
             <option :value="4">4</option>
           </select>
         </div>
-        <div>
-          <label>use custom formatter</label>
-          <input v-model="state.useCustomLinkFormatter" type="checkbox" />
-        </div>
       </div>
       <h3>v-model:selectedValue:</h3>
       <div>{{ state.selectedValue }}</div>
@@ -75,16 +75,17 @@
         :data="state.data"
         :path="state.path"
         :deep="state.deep"
-        :show-double-quotes="state.showDoubleQuotes"
+        :show-double-quotes="true"
         :highlight-selected-node="state.highlightSelectedNode"
         :show-length="state.showLength"
         :show-line="state.showLine"
+        :show-line-number="state.showLineNumber"
         :select-on-click-node="state.selectOnClickNode"
         :collapsed-on-click-brackets="state.collapsedOnClickBrackets"
         :path-selectable="(path, data) => typeof state.data !== 'number'"
         :selectable-type="state.selectableType"
         :show-select-controller="state.showSelectController"
-        :custom-value-formatter="state.useCustomLinkFormatter ? customLinkFormatter : null"
+        :show-icon="state.showIcon"
         @nodeClick="handleClick"
         @selectedChange="handleChange"
       />
@@ -137,15 +138,15 @@ export default defineComponent({
       showSelectController: true,
       showLength: false,
       showLine: true,
-      showDoubleQuotes: true,
+      showLineNumber: false,
       highlightSelectedNode: true,
       selectOnClickNode: true,
       collapsedOnClickBrackets: true,
-      useCustomLinkFormatter: false,
       path: 'res',
       deep: 3,
       itemData: {},
       itemPath: '',
+      showIcon: false,
     });
 
     const handleClick = (path, data) => {
@@ -158,14 +159,6 @@ export default defineComponent({
       // console.log('newVal: ', newVal, ' oldVal: ', oldVal);
     };
 
-    const customLinkFormatter = (data, key, path, defaultFormatted) => {
-      if (typeof data === 'string' && data.startsWith('http://')) {
-        return `<a style="color:red;" href="${data}" target="_blank">"${data}"</a>`;
-      } else {
-        return defaultFormatted;
-      }
-    };
-
     watch(
       () => state.val,
       newVal => {
@@ -192,18 +185,8 @@ export default defineComponent({
       },
     );
 
-    watch(
-      () => state.useCustomLinkFormatter,
-      async () => {
-        state.renderOK = false;
-        await nextTick();
-        state.renderOK = true;
-      },
-    );
-
     return {
       state,
-      customLinkFormatter,
       handleClick,
       handleChange,
     };
diff --git a/src/components/Tree/index.tsx b/src/components/Tree/index.tsx
index d2302a4..8774d0b 100644
--- a/src/components/Tree/index.tsx
+++ b/src/components/Tree/index.tsx
@@ -1,4 +1,12 @@
-import { defineComponent, reactive, computed, watchEffect, ref, PropType } from 'vue';
+import {
+  defineComponent,
+  reactive,
+  computed,
+  watchEffect,
+  ref,
+  PropType,
+  CSSProperties,
+} from 'vue';
 import TreeNode, { treeNodePropsPass, NodeDataType } from 'src/components/TreeNode';
 import { emitError, jsonFlatten, JSONDataType, cloneDeep } from 'src/utils';
 import './styles.less';
@@ -54,6 +62,7 @@ export default defineComponent({
       type: [String, Array] as PropType<string | string[]>,
       default: () => '',
     },
+    style: Object as PropType<CSSProperties>,
   },
 
   emits: ['nodeClick', 'bracketsClick', 'selectedChange', 'update:selectedValue', 'update:data'],
@@ -98,8 +107,9 @@ export default defineComponent({
         if (startHiddenItem && startHiddenItem.path === item.path) {
           const isObject = startHiddenItem.type === 'objectStart';
           const mergeItem = {
-            ...startHiddenItem,
             ...item,
+            ...startHiddenItem,
+            showComma: item.showComma,
             content: isObject ? '{...}' : '[...]',
             type: isObject ? 'objectCollapsed' : 'arrayCollapsed',
           } as NodeDataType;
@@ -203,7 +213,6 @@ export default defineComponent({
       const rootPath = props.path;
       new Function('data', 'val', `data${path.slice(rootPath.length)}=val`)(newData, value);
       emit('update:data', newData);
-      console.log(newData);
     };
 
     watchEffect(() => {
@@ -240,6 +249,7 @@ export default defineComponent({
       showDoubleQuotes,
       showLength,
       showLine,
+      showLineNumber,
       showSelectController,
       selectOnClickNode,
       pathSelectable,
@@ -252,6 +262,7 @@ export default defineComponent({
       editable,
       editableTrigger,
       showIcon,
+      style,
     } = this;
 
     const { onTreeNodeClick, onBracketsClick, onSelectedChange, onTreeScroll, onValueChange } =
@@ -271,6 +282,7 @@ export default defineComponent({
           checked={selectedPaths.includes(item.path)}
           selectable-type={selectableType}
           show-line={showLine}
+          show-line-number={showLineNumber}
           show-select-controller={showSelectController}
           select-on-click-node={selectOnClickNode}
           path-selectable={pathSelectable}
@@ -293,7 +305,12 @@ export default defineComponent({
           'vjs-tree': true,
           'is-virtual': virtual,
         }}
-        onScroll={virtual ? onTreeScroll: undefined}
+        onScroll={virtual ? onTreeScroll : undefined}
+        style={
+          showLineNumber
+            ? { paddingLeft: `${Number(flatData.length.toString().length) * 12}px`, ...style }
+            : style
+        }
       >
         {virtual ? (
           <div style={{ height: `${height}px` }}>
diff --git a/src/components/TreeNode/index.tsx b/src/components/TreeNode/index.tsx
index b799de5..65cd253 100644
--- a/src/components/TreeNode/index.tsx
+++ b/src/components/TreeNode/index.tsx
@@ -42,6 +42,10 @@ export const treeNodePropsPass = {
     type: Boolean,
     default: true,
   },
+  showLineNumber: {
+    type: Boolean,
+    default: false,
+  },
   // Whether to trigger selection when clicking on the node.
   selectOnClickNode: {
     type: Boolean,
@@ -227,9 +231,11 @@ export default defineComponent({
       showLength,
       collapsed,
       showLine,
+      showLineNumber,
       editable,
       editableTrigger,
       showIcon,
+      style,
     } = this;
 
     const {
@@ -246,10 +252,14 @@ export default defineComponent({
         class={{
           'vjs-tree__node': true,
           'has-selector': showSelectController,
+          'has-carets': showIcon,
           'is-highlight': highlightSelectedNode && checked,
         }}
         onClick={onNodeClick}
+        style={style}
       >
+        {showLineNumber && <span class="vjs-node__index">{node.id + 1}</span>}
+
         {showSelectController &&
           state.selectable &&
           node.type !== 'objectEnd' &&
diff --git a/src/components/TreeNode/styles.less b/src/components/TreeNode/styles.less
index 95c9629..3d7147d 100644
--- a/src/components/TreeNode/styles.less
+++ b/src/components/TreeNode/styles.less
@@ -9,8 +9,13 @@
   position: relative;
   line-height: 20px;
 
-  &.has-selector {
-    padding-left: @selector-span;
+  &.has-carets {
+    padding-left: 15px;
+  }
+
+  &.has-selector,
+  &.has-carets.has-selector {
+    padding-left: 30px;
   }
 
   &.is-highlight,
@@ -32,6 +37,12 @@
   }
 }
 
+.@{css-prefix}-node__index {
+  position: absolute;
+  right: 100%;
+  margin-right: 4px;
+}
+
 .@{css-prefix}-comment {
   color: @comment-color;
 }
diff --git a/src/themes.less b/src/themes.less
index 1ed2bfa..e187a67 100644
--- a/src/themes.less
+++ b/src/themes.less
@@ -21,6 +21,3 @@
 
 /* common border-color */
 @border-color: #bfcbd9;
-
-/* 左侧可选区域占用空间 */
-@selector-span: 30px;