賴嘉鎔Javascript物件導向方法是物件的函數

物件的函數等於方法

物件導向設計OOP=Object-Oriented Programming

主詞subject受詞object東方的oriental

id=identity,身分證id card, division區塊,段落

.方法get()是取得對應的值，功能同字典

dict.get(s1.code)從dict字典取得索引為s1.code的值

賴嘉鎔以上程式碼

<H1>物件導向設計OOP=Object-Oriented Programming</H1>
主詞subject受詞object東方的oriental
<P id="cat"></P>
<P id="dog"></P>
<P>id=identity,身分證id card, division區塊,段落</P>
<script>//Javascript註解二斜線//Python註解#
dict =new Map([["2303","聯電"],["2330","台積電"],["2880","華南金"]]);//宣告配對(字典)
class Stock{      //宣告類別
  constructor(code, shares, price){//建構子constructor
    this.code = code;
    this.shares = shares;
    this.price = price;}
}
s1 = new Stock("2330", 100, 1000); //建構子Stock建構s1
s2 = new Stock("2880", 1000, 30); //建構子Stock建構s2
st = s1.code+' 股數 '+s1.shares.toString()+'<BR>'+s2.code.toString()+' 股數 '+s2.shares;
document.getElementById('cat').innerHTML = st;
st = dict.get(s1.code)+' 股數 '+s1.shares.toString()+'<BR>'+dict.get(s2.code)+' 股數 '+s2.shares;
document.getElementById('dog').innerHTML = st;
</script>
.方法get()是取得對應的值，功能同字典
<P>dict.get(s1.code)從dict字典取得索引為s1.code的值<P>

加上美國股票的程式碼

<h1>物件導向設計OOP=Object-Oriented Programming</h1>
主詞subject受詞object東方的oriental
<p id="cat"></p>
<p id="dog"></p>
<p>id=identity,身分證id card, division區塊,段落</p>
<script>//Javascript註解二斜線//Python註解#
dict =new Map([["2303","聯電"],["2330","台積電"],["2880","華南金"],['AAPL','蘋果公司'],['C','花旗銀行'],['T','美國電話電報']]);//宣告配對(字典)
class Stock{      //宣告類別
  constructor(code, shares, price){//建構子constructor
    this.code = code;
    this.shares = shares;
    this.price = price;}
}
s1 = new Stock("2330", 100, 1000); //建構子Stock建構s1
s2 = new Stock("2880", 1000, 30); //建構子Stock建構s2
s3 = new Stock("C", 100, 1000); //建構子Stock建構s1
s4 = new Stock("T", 1000, 30); //建構子Stock建構s2

st = s1.code+' 股數 '+s1.shares.toString()+'<BR>'+s2.code.toString()+' 股數 '+s2.shares;
document.getElementById('cat').innerHTML = st;
st = dict.get(s3.code)+' 股數 '+s3.shares.toString()+'<BR>'+dict.get(s4.code)+' 股數 '+s4.shares;
document.getElementById('dog').innerHTML = st;
</script>