作业：创建对象的方式(字面量或构造函数)
实例
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>JS中的对象创建</title>
</head>
<body>
<h2>用字面量创建对象</h2>
<hr>
<script >
let obj = 100;
let obj1 = '南通税企通';
document.write(obj1,'<br>',obj,'<hr>');
let obj2 = {
name:'arthur',
position:'管理员',
salary:19800,
secret: function () {
return this.salary;
}
};
document.write(obj2.name,'<br>');
document.write(obj2.position,'<br>');
document.write(obj2.secret(),'<hr>');
</script>
<h2>用构造函数创建对象</h2>
<hr>
<script>
function Staff(name,position,salary){
this.name = name;
this.position = position;
this.salary = salary;
this.getName = function () {
return [this.name,this.position,this.salary];
}
}
let staff1 = new Staff('arthur','admin',19800);
let staff2 = new Staff('kitty','assistant',8800);
document.write(staff1.getName(),'<br>');
document.write(staff2.getName(),'<hr>');
document.write(typeof staff1.constructor,'<br>');
document.write(staff1.constructor,'<br>');
document.write(staff1.constructor === Staff,'<br>');
document.write(staff1 instanceof Staff,'<br>');
document.write(staff1 instanceof Object,'<hr>');
document.write(this,'<br>');
Staff('baby','desktop','3800');
document.write(window.getName(),'<hr>');
staff3 = new Staff();
Staff.call(staff3,'a','a1','123');
document.write(staff3.getName(),'<br>');
Staff.apply(staff3,['b','b2',321]);
document.write(staff3.getName(),'<hr>');
</script>
<h2>原型模式创建对象</h2>
<hr>
<script >
function Shop(shoes,clothes,jeans) {
Shop.prototype.shoes = shoes;
Shop.prototype.clothes = clothes;
Shop.prototype.jeans = jeans;
Shop.prototype.getInfo = function () {
return this.shoes +',' +this.clothes +','+ this.jeans;
}
}
let shop1 = new Shop('李宁','班尼路','某易斯.威登');
document.write(shop1.getInfo(),'<br>');
let shop2 = new Shop('乔丹','李维斯','某思哲');
document.write(shop1.getInfo(),'<br>');
document.write(shop2.getInfo(),'<hr>');
document.write(Shop.constructor,'<br>');
document.write(typeof Shop.prototype,'<br>');
document.write(Shop.prototype.constructor,'<hr>');
document.write(Shop.constructor === shop1.constructor.prototype.constructor);
</script>
</body>
</html>运行实例 »
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总结：写完了，终于把JS中对象了解到一定程度了，所谓的一切皆对象，就说明了一切皆虚幻，存在于自己怎么理解而已！