var inherits = require("util").inherits;
function a(){
this.name = "lee"
}
a.prototype.sex = "male"
function b(){
this.color = "red"
}
b.prototype.height = "168"
function c(){
}
inherits(c,a)
inherits(c,b)
var c = new c()
console.log(c.height)
console.log(c.sex)
console.log(c.name)
b. 輸出:
168
undefined
undefinedfunction a(){
this.name = "lee"
}
a.prototype.sex = "male"
function b(){
this.color = "red"
}
b.prototype.height = "168"
function c(){
}
c.prototype = new a()
c.prototype = new b()
var c = new c()
console.log(c.height)
console.log(c.sex)
console.log(c.name)
b. 輸出:
168
undefined
undefined1、只支持單繼承
2、不能作用于類本身的屬性或方法(只支持prototype原型創建的屬性或方法)
免責聲明:本站發布的內容(圖片、視頻和文字)以原創、轉載和分享為主,文章觀點不代表本網站立場,如果涉及侵權請聯系站長郵箱:is@yisu.com進行舉報,并提供相關證據,一經查實,將立刻刪除涉嫌侵權內容。