Web Front-endJS TutorialJavaScript implementation of accessing object properties (getting/setting property values)JavaScript implementation of accessing object properties (getting/setting property values)
通过在JavaScript implementation of accessing object properties (getting/setting property values) implementation of accessing object properties (getting/setting property values) implementation of accessing object properties (getting/setting property values)中定义对象，可以像类一样实现封装，在本文中将给大家介绍如何编写代码来访问对象属性，下面我们来看具体的内容。
我们先来看一下格式
(对象的实例名称).(属性名称)
我们来看具体的示例
代码如下
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<script type="text/javascript">
function product() {
this.name = "LemonCandy";
this.price = 150;
this.getInfo = function(){
return this.name + " = \\" + this.price;
}
}
window.onload = function onLoad() {
target = document.getElementById("output");
prod = new product();
target.innerHTML = "name:" + prod.name + "<br/>";
target.innerHTML += "price:" + prod.price + "<br/>";
}
</script>
</head>
<body>
<div id="output"></div>
</body>
</html>说明
function product() {
this.name = "LemonCandy";
this.price = 150;
this.getInfo = function(){
return this.name + " = \\" + this.price;
}
}上面的代码是对象的定义，在这个例子中，我们实现了name，price属性和getInfo（）方法。
window.onload = function onLoad() {
target = document.getElementById("output");
prod = new product();
prod.name = "LemonCandy2";
target.innerHTML = "name:" + prod.name + "<br/>";
target.innerHTML += "price:" + prod.price + "<br/>";
}加载页面时，执行上面的代码。
prod = new product();
创建对象的实例。
prod.name = "LemonCandy2";
(对象的实例名称).(属性名称)用于访问对象的属性。要为属性设置值，需要通过替换设置属性值
target.innerHTML = "name:" + prod.name + "<br/>";
target.innerHTML += "price:" + prod.price + "<br/>";(对象的实例名称).(属性名称)用于访问对象的属性。属性的值显示在页面上。
运行结果
当Web浏览器显示上述HTML文件时，将显示如下所示的效果。可以确认设定的属性值和从属性中获取值。
接下来我们再来看一个例子
代码如下
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<script type="text/javascript">
var obj = {
name: "LemonCandy",
price: 150,
getInfo: function () {
return this.name + " = \\" + this.price;
}
}
window.onload = function onLoad() {
target = document.getElementById("output");
obj.name = "LemonCandy2";
obj.price = 220;
target.innerHTML = "name:" + obj.name + "<br/>";
target.innerHTML += "price:" + obj.price + "<br/>";
}
</script>
</head>
<body>
<div id="output"></div>
</body>
</html>说明
var obj = {
name: "LemonCandy",
price: 150,
getInfo: function () {
return this.name + " = \\" + this.price;
}
}上面的代码是对象的定义。在这个例子中，我们实现了name，price属性和getInfo（）方法。它是以简单的格式编写的。
window.onload = function onLoad() {
target = document.getElementById("output");
obj.name = "LemonCandy2";
obj.price = 220;
target.innerHTML = "name:" + obj.name + "<br/>";
target.innerHTML += "price:" + obj.price + "<br/>";
}加载页面时，执行上面的代码。代码与例1中的代码相同，处理内容相同。因为使用的是简单的类型的对象定义的格式，不存在由new命令创建一个实例部分这与例1中的代码不同。
运行结果
当Web浏览器显示上述HTML文件时，将显示如下所示的效果，确认可以将值设置为属性并从属性中获取值。
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