题记
javascript对象
定义对象
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>实例</title>
</head>
<body>
<p>创建 JavaScript 对象。</p>
<p id="demo"></p>
<script>
var person = {firstName:"John", lastName:"Doe", age:50, eyeColor:"blue"};
document.getElementById("demo").innerHTML =
person.firstName + " 现在 " + person.age + " 岁.";
</script>
</body>
</html><!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>实例</title>
</head>
<body>
<p>创建 JavaScript 对象。</p>
<p id="demo"></p>
<script>
var person = {
firstName : "John",
lastName : "Doe",
age : 50,
eyeColor : "blue"
};
document.getElementById("demo").innerHTML =
person.firstName + " 现在 " + person.age + " 岁。";
</script>
</body>
</html>访问对象属性
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>实例</title>
</head>
<body>
<p>
有两种方式可以访问对象属性：
</p>
<p>
你可以使用 .property 或 ["property"].
</p>
<p id="demo"></p>
<script>
var person = {
firstName : "John",
lastName : "Doe",
id : 5566
};
document.getElementById("demo").innerHTML =
person.firstName + " " + person.lastName;
</script>
</body>
</html><!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>实例</title>
</head>
<body>
<p>
有两种方式可以访问对象属性:
</p>
<p>
你可以使用 .property 或 ["property"]。
</p>
<p id="demo"></p>
<script>
var person = {
firstName: "John",
lastName : "Doe",
id : 5566
};
document.getElementById("demo").innerHTML =
person["firstName"] + " " + person["lastName"];
</script>
</body>
</html>对象方法
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>实例</title>
</head>
<body>
<p>创建和使用对象方法。</p>
<p>对象方法作为一个函数定义存储在对象属性中。</p>
<p id="demo"></p>
<script>
var person = {
firstName: "John",
lastName : "Doe",
id : 5566,
fullName : function()
{
return this.firstName + " " + this.lastName;
}
};
document.getElementById("demo").innerHTML = person.fullName();
</script>
</body>
</html><!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>实例</title>
</head>
<body>
<p>创建和使用对象方法。</p>
<p>对象方法是一个函数定义,并作为一个属性值存储。</p>
<p id="demo1"></p>
<p id="demo2"></p>
<script>
var person = {
firstName: "John",
lastName : "Doe",
id : 5566,
fullName : function()
{
return this.firstName + " " + this.lastName;
}
};
document.getElementById("demo1").innerHTML = "不加括号输出函数表达式：" + person.fullName;
document.getElementById("demo2").innerHTML = "加括号输出函数执行结果：" + person.fullName();
</script>
</body>
</html>后记
觉得有用可以点赞或收藏！
本文含有隐藏内容，请 开通VIP 后查看