<!DOCTYPE html> <html> <body> <h1>JavaScript Map 对象</h1> <p>使用 Map.values():</p> <p id="demo"></p> <script> // 创建 Map const fruits = new Map([ ["apples", 500], ["bananas", 300], ["oranges", 200] ]); let total = 0; for (const x of fruits.values()) { total += x; } document.getElementById("demo").innerHTML = total; </script> </body> </html>