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                #高階函數 函數作為返回值使用 ——————————高階函數 ```javascript function f1() { console.log("f1函數開始"); return function () { console.log("我是函數,但是此時是作為返回值使用的"); } } var ff = f1(); //得到的是返回值的函數體 ff(); //接收的返回值是一個函數,所以加括號執行 ```
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