<!DOCTYPE html> <html> <body> <h1>JavaScript Map 对象</h1> <p id="demo"></p> <script> // 创建对象 const apples = {name: 'Apples'}; const bananas = {name: 'Bananas'}; const oranges = {name: 'Oranges'}; // 创建 Map const fruits = new Map(); // 向 Map 添加元素 fruits.set(apples, 500); fruits.set(bananas, 300); fruits.set(oranges, 200); document.getElementById("demo").innerHTML = fruits.get("apples"); </script> </body> </html>