如何根據變數 Called_function 的值呼叫所列出的函數之一？
function a() { alert('You called the a function.'); }
function b() { alert('You called the b function'); }
function c() { alert('You called the c function'); }
const possible_strings = ["a", "b", "c"];
const called_function = Math.floor(Math.random() * possible_strings.length);
這不起作用：
window[被呼叫函數]();
執行 window[called_function](); 時，顯示未定義。
您將
Called_function設定為陣列中項目的索引。然後，您需要在陣列中查找該索引以取得函數名稱。function a() { alert('You called the a function.'); } function b() { alert('You called the b function'); } function c() { alert('You called the c function'); } const possible_strings = ["a", "b", "c"]; const called_function = possible_strings[Math.floor(Math.random() * possible_strings.length)]; window[called_function]()您也可以直接引用函數，而不是使用字串，如下所示：
function a() { alert('You called the a function.'); } function b() { alert('You called the b function'); } function c() { alert('You called the c function'); } [a,b,c][Math.random()*3|0]()