diff --git a/components/anchor/anchorHelper.tsx b/components/anchor/anchorHelper.tsx
index 0dcf732bb3..3092d058b4 100644
--- a/components/anchor/anchorHelper.tsx
+++ b/components/anchor/anchorHelper.tsx
@@ -55,7 +55,7 @@ export function scrollTo(href, target = getDefaultTarget) {
     }
   };
   reqAnimFrame(frameFunc);
-  history.pushState(null, undefined, href);
+  history.pushState(null, '', href);
 }
 
 class AnchorHelper {
diff --git a/components/transfer/index.tsx b/components/transfer/index.tsx
index bfe71b227c..471b4ad0c3 100644
--- a/components/transfer/index.tsx
+++ b/components/transfer/index.tsx
@@ -233,12 +233,7 @@ export default class Transfer extends React.Component<TransferProps, any> {
   handleSelect = (direction, selectedItem, checked) => {
     const { sourceSelectedKeys, targetSelectedKeys } = this.state;
     const holder = direction === 'left' ? [...sourceSelectedKeys] : [...targetSelectedKeys];
-    let index;
-    holder.forEach((key, i) => {
-      if (key === selectedItem.key) {
-        index = i;
-      }
-    });
+    const index = holder.indexOf(selectedItem.key);
     if (index > -1) {
       holder.splice(index, 1);
     }
diff --git a/components/tree/demo/search.md b/components/tree/demo/search.md
index 659e644cb9..80b147df08 100644
--- a/components/tree/demo/search.md
+++ b/components/tree/demo/search.md
@@ -111,13 +111,13 @@ class SearchTree extends React.Component {
       const index = item.key.search(searchValue);
       const beforeStr = item.key.substr(0, index);
       const afterStr = item.key.substr(index + searchValue.length);
-      const title = index > -1 ?
-            <span>
-              {beforeStr}
-              <span className="ant-tree-searchable-filter">{searchValue}</span>
-              {afterStr}
-            </span>
-            : <span>{item.key}</span>;
+      const title = index > -1 ? (
+        <span>
+          {beforeStr}
+          <span className="ant-tree-searchable-filter">{searchValue}</span>
+          {afterStr}
+        </span>
+      ) : <span>{item.key}</span>;
       if (item.children) {
         return (
           <TreeNode key={item.key} title={title}>
@@ -153,4 +153,4 @@ ReactDOM.render(<SearchTree />, mountNode);
   color: #f50;
   transition: all .3s ease;
 }
-````
\ No newline at end of file
+````