<!DOCTYPE html> <html> <body> <h1>JavaScript Set</h1> <p>迭代 Set 值:</p> <p id="demo"></p> <script> // 创建 Set const letters = new Set(["a","b","c"]); // 列出所有元素 let text = ""; for (const x of letters.values()) { text += x + "<br>"; } document.getElementById("demo").innerHTML = text; </script> </body> </html>