diff --git a/.gitignore b/.gitignore
index 239ecff..22fbdbe 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 node_modules
 yarn.lock
+package-lock.json
diff --git a/homework/1/rename.js b/homework/1/rename.js
index 0bbd947..88020d8 100644
--- a/homework/1/rename.js
+++ b/homework/1/rename.js
@@ -3,23 +3,41 @@ const astring = require('astring');
 const traverse = require('../../common/traverse');
 
 function transform(root, originName, targetName) {
-  // 遍历所有节点
-  return traverse((node, ctx, next) => {
+    // 遍历所有节点
+    return traverse((node, ctx, next) => {
 
-    // TODO: 作业代码写在这里
-    if (node.type === 'xxx') {
-    }
+        // TODO: 作业代码写在这里
+        if (node.type === 'FunctionDeclaration' || node.type === 'VariableDeclarator') {
+            if (node.id.name === originName) {
+                node.id.name = targetName
+            }
+        }
 
-    // 继续往下遍历
-    return next(node, ctx)
-  })(root);
+        if (node.type === 'MemberExpression' && node.computed) {
+            if (node.object.object.object.name === originName) {
+                node.object.object.object.name = targetName
+            }
+        }
+
+        if (node.type === 'BinaryExpression') {
+            if (node.left.name === originName) {
+                node.left.name = targetName
+            }
+            if (node.right.name === originName) {
+                node.right.name = targetName
+            }
+        }
+
+        // 继续往下遍历
+        return next(node, ctx)
+    })(root);
 }
 
 function rename(code, originName, targetName) {
-  const ast = acorn.parse(code, {
-    ecmaVersion: 5,
-  })
-  return astring.generate(transform(ast, originName, targetName))
+    const ast = acorn.parse(code, {
+        ecmaVersion: 5,
+    })
+    return astring.generate(transform(ast, originName, targetName))
 }
 
 module.exports = rename
\ No newline at end of file