使用 JavaScript 从 2 个值和键数组构建 Map
javascriptweb developmentfront end technologyobject oriented programming
假设我们有两个数组 −
const keys = [0, 4, 2, 3, 1]; const values = ["first", "second", "third", "fourth", "fifth"];
我们需要编写一个 JavaScript 函数，该函数接收键和值数组并将值映射到相应的键。输出应为 −
const map = {
0 => 'first',
4 => 'second',
2 => 'third',
3 => 'fourth',
1 => 'fifth'
};
示例
以下是代码 −
const keys = [0, 4, 2, 3, 1];
const values = ["first", "second", "third", "fourth", "fifth"];
const buildMap = (keys, values) => {
const map = new Map();
for(let i = 0; i < keys.length; i++){
map.set(keys[i], values[i]);
};
return map;
};
console.log(buildMap(keys, values));
输出
这将在控制台中产生以下输出 −
Map(5) {
0 => 'first',
4 => 'second',
2 => 'third',
3 => 'fourth',
1 => 'fifth'
}
