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JavaScript メソッド「write」と「name:value」変数定義

JavaScript

Last updated at 2022-07-26Posted at 2022-07-25

<body>
<script>
var person=
{
	firstname : "John",
	lastname  : "Doe",
	id        :  5566,
　　fullName : function() 
	{
       return this.firstName + " " + this.lastName;
    }
};
// 下記二つ書き方の値一緒＝Doe
var personLastName1 = person.lastname;
var personLastName2 = person["lastname"];
document.write(personLastName1 + "<br>");
document.write(personLastName2 + "<br>");

document.write("fullNameメソッド()なし：" + person.fullName + "</br>");
document.write("fullNameメソッド()ある：" + person.fullName());
</script>
</body>

上記の結果：
Doe
Doe
fullNameメソッド()なし：function(){return this.firstName + " " + this.lastName;}
fullNameメソッド()ある：John Doe

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