diff --git a/examples/tree.html b/examples/tree.html
index e8af5362..9c14e8a6 100644
--- a/examples/tree.html
+++ b/examples/tree.html
@@ -1,18 +1,10 @@
-
 <!DOCTYPE html>
 <html>
 <head>
   <meta charset="utf-8">
-  <title>树组件 - layui</title>
-  <meta name="renderer" content="webkit">
-  <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
   <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
-  <meta name="apple-mobile-web-app-status-bar-style" content="black"> 
-  <meta name="apple-mobile-web-app-capable" content="yes">
-  <meta name="format-detection" content="telephone=no">
-
-  <link rel="stylesheet" href="../src/css/layui.css" media="all">
-  
+  <title>树组件 - layui</title>
+  <link rel="stylesheet" href="../src/css/layui.css" media="all">  
   <style>
     body{padding: 100px;}
     #test1,#test2{margin-bottom: 100px; width: 400px;}
@@ -48,118 +40,118 @@
     
     //数据源
     var data1 = [{
-      title: '一级1'
+      title: 'A-1'
       ,id: 1
       ,children: [{
-        title: '二级1-1'
+        title: 'B-1-1'
         ,id: 3
         ,href: 'https://www.layui.com/doc/'
         ,children: [{
-          title: '三级1-1-3'
+          title: 'C-1-1-3'
           ,id: 23
           ,children: [{
-            title: '四级1-1-3-1'
+            title: 'D-1-1-3-1'
             ,id: 24
             ,children: [{
-              title: '五级1-1-3-1-1'
+              title: 'E-1-1-3-1-1'
               ,id: 30
             },{
-              title: '五级1-1-3-1-2'
+              title: 'E-1-1-3-1-2'
               ,id: 31
             }]
           }]
         },{
-          title: '三级1-1-1'
+          title: 'C-1-1-1'
           ,id: 7
           ,checked: true
           ,children: [{
-            title: '四级1-1-1-1'
+            title: 'D-1-1-1-1'
             ,id: 15
             //,checked: true
             ,href: 'https://www.layui.com/doc/base/infrastructure.html'
           }]
         },{
-          title: '三级1-1-2'
+          title: 'C-1-1-2'
           ,id: 8
           ,children: [{
-            title: '四级1-1-2-1'
+            title: 'D-1-1-2-1'
             ,id: 32
           }]
         }]
       },{
-        title: '二级1-2'
+        title: 'B-1-2'
         ,id: 4
         ,spread: true
         ,children: [{
-          title: '三级1-2-1'
+          title: 'C-1-2-1'
           ,id: 9
           ,checked: true
           ,disabled: true
         },{
-          title: '三级1-2-2'
+          title: 'C-1-2-2'
           ,id: 10
         }]
       },{
-        title: '二级1-3'
+        title: 'B-1-3'
         ,id: 20
         ,children: [{
-          title: '三级1-3-1'
+          title: 'C-1-3-1'
           ,id: 21
         },{
-          title: '三级1-3-2'
+          title: 'C-1-3-2'
           ,id: 22
         }]
       }]
     },{
-      title: '一级2'
+      title: 'A-2'
       ,id: 2
       ,spread: true
       ,children: [{
-        title: '二级2-1'
+        title: 'B-2-1'
         ,id: 5
         ,spread: true
         ,children: [{
-          title: '三级2-1-1'
+          title: 'C-2-1-1'
           ,id: 11
         },{
-          title: '三级2-1-2'
+          title: 'C-2-1-2'
           ,id: 12
         }]
       },{
-        title: '二级2-2'
+        title: 'B-2-2'
         ,id: 6
         ,checked: true
         ,children: [{
-          title: '三级2-2-1'
+          title: 'C-2-2-1'
           ,id: 13
         },{
-          title: '三级2-2-2'
+          title: 'C-2-2-2'
           ,id: 14
           ,disabled: true
         }]
       }]
     },{
-      title: '一级3'
+      title: 'A-3'
       ,id: 16
       ,children: [{
-        title: '二级3-1'
+        title: 'B-3-1'
         ,id: 17
         ,fixed: true
         ,children: [{
-          title: '三级3-1-1'
+          title: 'C-3-1-1'
           ,id: 18
         },{
-          title: '三级3-1-2'
+          title: 'C-3-1-2'
           ,id: 19
         }]
       },{
-        title: '二级3-2'
+        title: 'B-3-2'
         ,id: 27
         ,children: [{
-          title: '三级3-2-1'
+          title: 'C-3-2-1'
           ,id: 28
         },{
-          title: '三级3-2-2'
+          title: 'C-3-2-2'
           ,id: 29
         }]
       }]
@@ -222,7 +214,7 @@
         console.log(checkedData);
       }
       ,setChecked: function(){
-        tree.setChecked('demoId1', [1000, 1001, 1002]);
+        tree.setChecked('demoId1', [11,12]);
       }
       ,reload: function(){
         tree.reload('demoId1', {
