Sep 14, 2025 · 2 min read · 這是《Eloquent JavaScript》第三章 Functions，談到 Growing Function 所舉的一個例子。這個例子提供了三種寫法，很好地體現了「每支函式應該只做一件事」的精神。 功能需求：有座牧場畜養了一群動物，種類有乳牛、雞、豬，需紀錄牠們的個別隻數。牧場主人希望數字保持三位數，若位數不足要加 0 補齊，並在數字後註明是哪種動物，方便他列印表單。像這樣： 007 Cows 011 Chickens 003 Pigs 關鍵知識點： while 迴圈：滿足條件期...
Join discussionApr 8, 2024 · 4 min read · As part of my attempt to better my Javascript skills, I have been working through Eloquent Javascript by Marijn Haverbeke. Chapter 4 is all about Arrays and Objects, and one of the exercises is to reverse an array in place. I thought it would be fun ...
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Feb 18, 2024 · 3 min read · In this chapter, Marijn Haverbeke delves into the realm of programming with JavaScript. Expressions and Statements An expression in code is a piece of code that results in a value. Expressions can be as simple as a number like 22 or a string like "ps...
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