主页
JS 参考手册
JavaScript Set集合 keys() 方法
tryjsref_set_keys
运行 ❯
×
更改方向
保存代码
更改主题
<!DOCTYPE html> <html> <body> <h1>JavaScript Sets</h1> <h2>The keys() Method</h2> <p>The keys() method returns an iterator object with all the values in a set.</p> <p id="demo"></p> <script> // Create a Set const letters = new Set(["a","b","c"]); // Get the Values const myIterator = letters.keys(); // List the Values let text = ""; for (const x of myIterator) { text += x + "<br>"; } document.getElementById("demo").innerHTML = text; </script> </body> </html>