<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>

                ??碼云GVP開源項目 12k star Uniapp+ElementUI 功能強大 支持多語言、二開方便! 廣告
                ![](https://img.kancloud.cn/a2/ac/a2acec5e3b5082de677f66e683a5210d_892x262.png) ![](https://img.kancloud.cn/2c/54/2c549392bddc7f809ba57b61a13f7f06_539x361.png) 應用場景: * 需要先進先出的場景,例如排隊、js異步中的任務隊列 隊列算法題 933: ![](https://img.kancloud.cn/f2/db/f2dbc89a35b7069d1555142b2b0e1cab_1711x582.png) ![](https://img.kancloud.cn/64/c8/64c829b7421ca35c6100186a113662d4_1056x164.png) ![](https://img.kancloud.cn/43/6d/436dc376b06d3d43c6354ff2390d4e48_1374x820.png) **解釋下這張圖**: 一個js剛執行的時候 會有一個主事件 一個匿名的主事件,然后丟到callback queue里面 丟到任務隊列里,js引擎會去任務隊列里去取一個事件,執行中,如果有異步操作任務 比如dom ajx setimeout 就丟給webApi操作,然后就不管了,webApi執行完畢的時候,會把異步回調函數再丟到callback queue任務隊列里,如果任務隊列里前面的事件都執行完了,那么新丟的回調函數的代碼繼續放到js引起里執行,如果回調函數代碼里還有異步,就繼續丟入webApi繼續循
                  <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