javascript - 将数组更改为小写

Question

创建全部大写字母的饮料数组

var drinks = ["Coke", "Pepsi", "Water", "Orange Juice"];

console.log("First statement");
console.log(drinks[0]);
console.log(drinks[1]);
console.log(drinks[2]);
console.log(drinks[3]);

然后(单独)修改数组的每个元素，使其变为小写

Answer 1

使用.map()像下面这样。这基本上遍历了数组中的每个元素，并使用 .toLowerCase()将字符串更改为小写字符串。

var drinks = ["Coke", "Pepsi", "Water", "Orange Juice"];

var lowerCaseDrinks = drinks.map(e => e.toLowerCase());

console.log(lowerCaseDrinks);