請問這個python代碼在javascript中的等價物是什么
guessed_index = [
i for i, letter in enumerate(self.chosen_word)
if letter == self.guess
]
ES6 中不存在列舉和串列理解，我如何將這兩個想法合二為一
uj5u.com熱心網友回復：
關注問題的可迭代/enumerate部分，而不是您正在執行的特定任務：您可以使用生成器函式實作Python 的enumerateJavaScript 模擬，并通過（或手動）使用生成的生成器（它是可迭代的超集）for-of若你寧可）：
function* enumerate(it, start = 0) {
let index = start;
for (const value of it) {
yield [value, index ];
}
}
const word = "hello";
const guess = "l";
const guessed_indexes = [];
for (const [value, index] of enumerate(word)) {
if (value === guess) {
guessed_indexes.push(index);
}
}
console.log(`guessed_indexes for '${guess}' in '${word}':`, guessed_indexes);或者您可以撰寫一個特定的生成器函式來執行查找匹配項的任務：
function* matchingIndexes(word, guess) {
let index = 0;
for (const letter of word) {
if (letter === guess) {
yield index;
}
index;
}
}
const word = "hello";
const guess = "l";
const guessed_indexes = [...matchingIndexes(word, guess)];
console.log(`guessed_indexes for '${guess}' in '${word}':`, guessed_indexes);uj5u.com熱心網友回復：
也許findIndex有用？
const word = "Hello";
const guess = "o";
const guessed_index = [...word].findIndex(letter => letter === guess);
console.log(guessed_index)
uj5u.com熱心網友回復：
為了讓不精通 Python 的潛在讀者清楚起見，下面是與您的理解等效的 Python 回圈：
guessed_index = []
i = 0
for letter in self.chosen_word:
if letter == self.guess:
guessed_index.append(i)
i = 1
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標籤：javascript Python 列表理解 枚举
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