源代碼
點擊運行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>教程</title> </head> <body> <p>使用 for-in 來循環對象的屬性:</p> <p id="demo"></p> <script> var myObj = { "name":"runoob", "alexa":10000, "site":null }; for (x in myObj) { document.getElementById("demo").innerHTML += x + "<br>"; } </script> </body> </html>
運行結果