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JavaScript 对象定义
tryjs_object_mutable
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<!DOCTYPE html> <html> <body> <p>JavaScript 对象是可变的。</p> <p>对对象副本的任何更改也会更改原始对象。</p> <p id="demo"></p> <script> var person = {firstName:"John", lastName:"Doe", age:50, eyeColor:"blue"} var x = person; x.age = 10; document.getElementById("demo").innerHTML = person.firstName + " is " + person.age + " years old."; </script> </body> </html>