字面量、工厂方法、构造函数创建对象（加、减、乘、除、平方根方法）

字面量创建对象(加)

var sumObj = {
    num1: 8,
    num2: 16,
    sumFn: function(){
        return sumObj.num1 + sumObj.num2;
    }
}
alert(sumObj.sumFn());

字面量创建对象(减)

var minus = {
    num1: 24,
    num2: 12,
    getMinus: function(){
        alert(minus.num1-minus.num2);
    }
};
minus.getMinus();

字面量创建对象(乘)

var mult = {
    num1: 5,
    num2: 5,
    getMult: function(){
        alert(mult.num1 * mult.num2);
    }
};
mult.getMult();

字面量创建对象(除)

var Divi = {
    num1: 25,
    num2: 5,
    getDivi: function(){
        alert(Divi.num1/Divi.num2);
    }
};
Divi.getDivi();

字面量创建对象(平方根)

var Root = {
    num: 5,
    getRoot: function(){
        alert(Root.num*Root.num);
    }
};
Root.getRoot();

工厂方法创建对象(加)

function sumFn(num1,num2){
    var sum = {};
    sum.num1 = num1;
    sum.num2 = num2;
    sum.getSum = function(){
        return num1 + num2;
    }
    return sum;
}
var sum1 = sumFn(12,12);
alert(sum1.getSum());

工厂方法创建对象(减)

function minusFn(num1,num2){
    var minus = {};
    minus.num1 = num1;
    minus.num2 = num2;
    minus.getMinus = function (){
        alert(num1 - num2);
    }
    return minus;
}
var minus1 = minusFn(24,12);
minus1.getMinus();

工厂方法创建对象(乘)

function multFn(num1,num2){
    var mult = {};
    mult.num1 = num1;
    mult.num2 = num2;
    mult.getMult = function(){
        alert(num1*num2);
    }
    return mult;
}
var mult1 = multFn(5,5);
mult1.getMult();

工厂方法创建对象(除)

function DiviFn(num1,num2){
    var divi = {};
    divi.num1 = num1;
    divi.num2 = num2;
    divi.getDivi = function(){
        alert(num1/num2);
    }
    return divi;
}
var divi1 = DiviFn(25,5);
divi1.getDivi();

工厂方法创建对象(平方根)

function RootFn(num){
    var root = {};
    root.num = num;
    root.getRoot = function(){
        alert(num*num);
    }
    return root;
}
var root1 = RootFn(5);
root1.getRoot();

构造函数创建对象(加)

function SumFn(num1,num2) {
    this.num1 = num1;
    this.num2 = num2;
    this.getSum = function () {
        return this.num1+this.num2;
    };
}
var sum1 = new SumFn(12,12);
alert(sum1.getSum());

构造函数创建对象(减)

function minusFn(num1,num2){
    this.num1 = num2;
    this.num2 = num2;
    this.getMinus = function(){
        alert(this.num1-this.num2);
    };
}
var minus = new minusFn(24,12);
minus.getMinus();

构造函数创建对象(乘)

function MultFn(num1,num2){
    this.num1 = num1;
    this.num2 = num2;
    this.getMult = function(){
        alert(this.num1*this.num2);
    };
}
var mult = new MultFn(5,5);
mult.getMult();

构造函数创建对象(除)

function DiviFn(num1,num2){
    this.num1 = num1;
    this.num2 = num2;
    this.getDivi = function(){
        alert(this.num1/this.num2);
    };
}
var divi = new DiviFn(25,5);
divi.getDivi();

构造函数创建对象(平方根)

function RootFn(num){
    this.num = num;
    this.getRoot = function(){
        alert(num*num);
    };
}
var root = new RootFn(5);
root.getRoot();