javascript - 从索引为 1 到 5 Javascript 的数组中返回项目

Question

我如何 console.log 当前数组中索引 1 到 5 的项目？使用循环

let cars = ["AUDI","BMW","LEXUS","VOLKSWAGEN","FERRARY","PORSCHE"]

const mappedCars=cars.map((item, i) => {
    console.log("The current index is: " + i);
    console.log("The current element is: " + item);
    console.log("\n");
    return item; //equivalent to list[index]
});

console.log(mappedCars);

标签： javascript

Answer 1

for loop您可以定义初始条件以及循环终止条件。

for ([initialExpression]; [condition]; [incrementExpression])
 statement

let cars = ["AUDI","BMW","LEXUS","VOLKSWAGEN","FERRARY","PORSCHE"]

const updated = [];
for (let i=1; i<=5; i++) {
        updated.push(cars[i]);
}

console.log(updated);