JSFiddle - React, Tailwind, and code Playground

JavaScript

// 声明父类
function superClass(){
	this.id = 1;
}

// 为父类添加公有方法
superClass.prototype.showId = function(){
	return this.id;
}

// 声明子类
function childClass(){
	this.subValue = false;
}

// 继承父类
childClass.prototype = new superClass();

// 为子类添加公有方法
childClass.prototype.display = function(){
	return this.subValue;
}

var sub = new childClass();
alert(sub.showId());
alert(sub.display());