如何按值对这张 map 进行排序？
var map = new Map();
map.set('orange', 10);
map.set('apple', 5);
map.set('banana', 20);
map.set('cherry', 13);
最佳答案
const myMap = new Map();
myMap.set("a",3);
myMap.set("c",4);
myMap.set("b",1);
myMap.set("d",2);
// sort by value
const mapSort1 = new Map([...myMap.entries()].sort((a, b) => b[1] - a[1]));
console.log(mapSort1);
// Map(4) {"c" => 4, "a" => 3, "d" => 2, "b" => 1}
const mapSort2 = new Map([...myMap.entries()].sort((a, b) => a[1] - b[1]));
console.log(mapSort2);
// Map(4) {"b" => 1, "d" => 2, "a" => 3, "c" => 4}
// sort by key
const mapSort3 = new Map([...myMap.entries()].sort());
console.log(mapSort3);
// Map(4) {"a" => 3, "b" => 1, "c" => 4, "d" => 2}
const mapSort4 = new Map([...myMap.entries()].reverse());
console.log(mapSort4);
// Map(4) {"d" => 2, "b" => 1, "c" => 4, "a" => 3}
关于javascript - 如何在 JavaScript 中按值对 map 进行排序？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/37982476/