JS面向对象的类继承

function Fu() {
    this.name = '小明';
}
Fu.prototype.showName = function() {
    alert(this.name);
}
function Zi(){
    // 只对属性进行继承
    Fu.call(this);
}
// 避免属性的继承制方法继承
var F = function(){}
F.prototype = Fu.prototype;
Zi.prototype = new F();
// 修正指向问题，常常被遺漏
Zi.prototype.constructor = Zi;
var zi = new Zi();
zi.showName();