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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>自学教程(runoops.com)</title> </head> <body> <p>删除 JSON 对象属性。</p> <p id="demo"></p> <script> var myObj, i, x = ""; myObj = { "name": "runoops", "alexa": 10000, "sites": { "site1": "www.runoops.com", "site2": "t.runoops.com", "site3": "demo.runoops.com" } } delete myObj.sites["site1"]; for (i in myObj.sites) { x += myObj.sites[i] + "<br>"; } document.getElementById("demo").innerHTML = x; </script> </body> </html>
运行结果：