<ruby id="bdb3f"></ruby>

    <p id="bdb3f"><cite id="bdb3f"></cite></p>

      

      <p id="bdb3f"><cite id="bdb3f"><th id="bdb3f"></th></cite></p><p id="bdb3f"></p>
        <p id="bdb3f"><cite id="bdb3f"></cite></p>
          

          <pre id="bdb3f"></pre>
          <pre id="bdb3f"><del id="bdb3f"><thead id="bdb3f"></thead></del></pre>
          

          <ruby id="bdb3f"><mark id="bdb3f"></mark></ruby><ruby id="bdb3f"></ruby>
          <pre id="bdb3f"><pre id="bdb3f"><mark id="bdb3f"></mark></pre></pre><output id="bdb3f"></output><p id="bdb3f"></p><p id="bdb3f"></p>
          

          <pre id="bdb3f"><del id="bdb3f"><progress id="bdb3f"></progress></del></pre>
                <ruby id="bdb3f"></ruby>
                
    


                
  
                                            
                                                                                    
        
                
          合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。
          廣告
        
                        
                
  

                

                
    
                
        
                
                            ## XMLHttpRequest發出http請求的整個流程是？
* 生成XMLHttpRequest對象
* 設置請求方法和請求地址
* 通過send方法發出請求
* 當readyState等于4，那就能拿到后端返回的數據response
<br>

## http請求有哪些狀態碼？
* 200 成功
* 404 找不到資源
* 500 服務端有錯誤
<br>

## http請求有哪些請求方法？
* get 獲取
* post 新增
* put 修改
* delete 刪除
<br>

## 端口號有什么意義？
一個服務器就綁定一個端口號，這樣的話我一臺電腦就可以啟動N個服務器
<br>

## html5的localStorage和sessionStorage有啥區別？
localStorage是永久存儲，sessionStorage關閉瀏覽器后數據就清除了
<br>

## DOM有哪些事件？
* click 點擊
* scroll 滾動
* touchstart 觸碰開始
* touchend 觸碰結束
* touchmove 觸碰中
* mouseover/mouseenter 鼠標經過
* mouseout/mouseleave 鼠標離開
* focus 獲取焦點
* blur 失去焦點
* keyup 鍵盤松開
* keydown 鍵盤按下
* input 輸入
* dblclick 雙擊
<br>

                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







                  <ruby id="bdb3f"></ruby>
                  <p id="bdb3f"><cite id="bdb3f"></cite></p>
                    

                    <p id="bdb3f"><cite id="bdb3f"><th id="bdb3f"></th></cite></p><p id="bdb3f"></p>
                      <p id="bdb3f"><cite id="bdb3f"></cite></p>
                        

                        <pre id="bdb3f"></pre>
                        <pre id="bdb3f"><del id="bdb3f"><thead id="bdb3f"></thead></del></pre>
                        

                        <ruby id="bdb3f"><mark id="bdb3f"></mark></ruby><ruby id="bdb3f"></ruby>
                        <pre id="bdb3f"><pre id="bdb3f"><mark id="bdb3f"></mark></pre></pre><output id="bdb3f"></output><p id="bdb3f"></p><p id="bdb3f"></p>
                        

                        <pre id="bdb3f"><del id="bdb3f"><progress id="bdb3f"></progress></del></pre>
                              <ruby id="bdb3f"></ruby>
                              

哎呀哎呀视频在线观看