吴裕雄--天生自然 JAVASCRIPT开发学习:prototype(原型对象)
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(runoob.com)</title>
</head>
<body> <h2>JavaScript 对象</h2> <p id="demo"></p> <script>
function Person(first, last, age, eye) {
this.firstName = first;
this.lastName = last;
this.age = age;
this.eyeColor = eye;
} var myFather = new Person("John", "Doe", 50, "blue");
var myMother = new Person("Sally", "Rally", 48, "green"); document.getElementById("demo").innerHTML =
"我的父亲年龄是 " + myFather.age + "。我的母亲年龄是 " + myMother.age;
</script> </body>
</html>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(runoob.com)</title>
</head>
<body> <h2>JavaScript 对象</h2> <p>你无法给构造函数添加新的属性。</p> <p id="demo"></p> <script>
function Person(first, last, age, eye) {
this.firstName = first;
this.lastName = last;
this.age = age;
this.eyeColor = eye;
} Person.nationality = "English"; var myFather = new Person("John", "Doe", 50, "blue");
var myMother = new Person("Sally", "Rally", 48, "green"); document.getElementById("demo").innerHTML =
"我父亲的国籍是 " + myFather.nationality;
</script> </body>
</html>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(runoob.com)</title>
</head>
<body> <h2>JavaScript 对象</h2> <p id="demo"></p> <script>
function Person(first, last, age, eye) {
this.firstName = first;
this.lastName = last;
this.age = age;
this.eyeColor = eye;
this.nationality = "English";
} var myFather = new Person("John", "Doe", 50, "blue");
var myMother = new Person("Sally", "Rally", 48, "green"); document.getElementById("demo").innerHTML =
"我父亲的国籍是 " + myFather.nationality + "。我母亲的国籍是 " + myMother.nationality;
</script> </body>
</html>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(runoob.com)</title>
</head>
<body> <h2>JavaScript 对象</h2> <p id="demo"></p> <script>
function Person(first, last, age, eye) {
this.firstName = first;
this.lastName = last;
this.age = age;
this.eyeColor = eye;
} Person.prototype.nationality = "English"; var myFather = new Person("John", "Doe", 50, "blue");
document.getElementById("demo").innerHTML =
"我父亲对国籍是 " + myFather.nationality;
</script> </body>
</html>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(runoob.com)</title>
</head>
<body> <h2>JavaScript 对象</h2> <p id="demo"></p> <script>
function Person(first, last, age, eye) {
this.firstName = first;
this.lastName = last;
this.age = age;
this.eyeColor = eye;
} Person.prototype.name = function() {
return this.firstName + " " + this.lastName
}; var myFather = new Person("John", "Doe", 50, "blue");
document.getElementById("demo").innerHTML =
"我对父亲是 " + myFather.name();
</script> </body>
</html>
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