diff --git a/src/UI/Components/commandLineInput/InputHint.tsx b/src/UI/Components/commandLineInput/InputHint.tsx
index fb90860ea..ff384d08b 100644
--- a/src/UI/Components/commandLineInput/InputHint.tsx
+++ b/src/UI/Components/commandLineInput/InputHint.tsx
@@ -21,7 +21,6 @@ export class InputHint extends React.Component<{ commandStore?: CommandStore, is
     private m_box: HTMLElement;//移动命令框区
     public state: ITodoItemState;
     private m_i: number = 0; //选择历史命令索引
-
     constructor(props)
     {
         super(props);
@@ -42,7 +41,7 @@ export class InputHint extends React.Component<{ commandStore?: CommandStore, is
 
         if (!m_inputValue)
         {
-            store.searchCommand.splice(0, store.searchCommand.length);
+            store.searchCommand.length = 0;
             return;
         }
         // 动态生成正则表达式
@@ -88,7 +87,6 @@ export class InputHint extends React.Component<{ commandStore?: CommandStore, is
 
         store.Prompt(e.currentTarget.innerHTML);
         store.execCommand(e.currentTarget.innerHTML);
-        // store.searchCommand.splice(0, store.searchCommand.length);
         store.searchCommand.length = 0;
 
     }
@@ -102,9 +100,9 @@ export class InputHint extends React.Component<{ commandStore?: CommandStore, is
         //↑-38 ，↓-40 esc-27
         if (e.keyCode === 27) //按esc键,清空所有命令
         {
-            searchCommand.splice(0, searchCommand.length);
+            searchCommand.length = 0;
 
-            viceCommand.splice(0, viceCommand.length);
+            viceCommand.length = 0;
 
             this.setState(
                 {
@@ -198,7 +196,7 @@ export class InputHint extends React.Component<{ commandStore?: CommandStore, is
 
                 if (this.state.command && CommandList.indexOf(this.state.command.trim()) !== -1)
                 {
-                    searchCommand.splice(0, searchCommand.length);
+                    searchCommand.length = 0;
 
                 }
                 else
@@ -212,7 +210,7 @@ export class InputHint extends React.Component<{ commandStore?: CommandStore, is
 
                 if (this.state.command === 'U')
                 {
-                    viceCommand.splice(0, viceCommand.length);
+                    viceCommand.length = 0;
                     return;
                 }
                 viceCommand.push({ title: '放弃', keyboard: 'U' })
@@ -229,7 +227,7 @@ export class InputHint extends React.Component<{ commandStore?: CommandStore, is
         let m_key = e.currentTarget.firstElementChild.innerHTML.slice(1, 2);
         if (m_key === 'U')
         {
-            viceCommand.splice(0, viceCommand.length);
+            viceCommand.length = 0;
         }
     }
     //鼠标选择命令
@@ -243,22 +241,6 @@ export class InputHint extends React.Component<{ commandStore?: CommandStore, is
         }
         (e.target as HTMLElement).className = 'hover';
     }
-    //获取元素到屏幕的距离
-    public handleGetElHeight = (el: HTMLElement) =>
-    {
-        let m_actualTop: number = el.offsetTop; //元素离顶部高度
-        let m_current = el.offsetParent;
-
-        while (m_current !== null)
-        {
-            m_actualTop += (m_current as HTMLElement).offsetTop;
-            m_current = (m_current as HTMLElement).offsetParent;
-        }
-        let m_actualBottom: number = window.innerHeight - m_actualTop - el.clientHeight;//元素离底部高度
-
-        let m_outPutDes = { m_actualTop, m_actualBottom };//输出距离对象
-        return m_outPutDes;
-    }
     componentDidMount()
     {
         document.body.addEventListener('keydown', this.handleSelectCommand);