<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
                #### 垃圾回收 1. mark-and-sweep:標記清除法 2. 不可達的變量將會清除 3. 可達的變量將不會清除 3. 引擎會刪除時的一些智能算法 1. CPU空閑時進行刪除,避免影響解析效率 2. 垃圾回收時進行標記清除,未引用的將不會標記 3. 變量置為null將會標記清除 ---- #### 對象引用、拷貝 1. Object.assign:淺拷貝 2. _.cloneDeep:深拷貝 ### 屬性存在性測試 1. const obj = { 'age': undefined } 2. obj.age ==> undefined 3. 'age' in obj ==> true (in 操作符檢測該對象是否有此屬性,對值為undefined的屬性也能正確檢測) ### 對象排序 ``` testList: { '1': '1', '10': '10', 'a': 'a', '2': '2', '5': '5', 'd': 'd', '3': '3', 'c': 'c', }, // 得出的排序結果為:123510adc // 排序順序按照整數先排,其它字符按照定義的順序進行排序 ```
                  <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