function coder()
{
    this.name = '現代魔法';
    this.job = 'Web 開發者';
    this.coding = function ()
    { alert('我正在寫代碼'); }
}

var coder = new coder();
alert(coder.name);
coder.coding();

function createCoderFactory()
{
    var obj = new Object();
    obj.name = '現代魔法';
    obj.job = '程序員';
    obj.coding = function ()
    {
        alert('我正在寫代碼');
    };
    return obj;
}
var coder = createCoderFactory();
alert(coder.name);
coder.coding();

function coder(){}
coder.prototype.name = '現代魔法';
coder.prototype.job = '程序員';
coder.prototype.coding = function(){
    alert('我正在寫代碼');
};
var coder = new coder();
alert(coder.name);
coder.coding();

var coder1 = new coder();
var coder2 = new coder();
alert(coder1.name);     /*顯示現代魔法*/
coder2.name = 'nowamagic';
alert(coder1.name);     /*顯示nowamagic*/
alert(coder2.name);     /*這個也顯示nowamagic*/

function coder()
{
    this.name = '現代魔法';
    this.job = '程序員';
}
coder.prototype.coding = function(){
    alert('我正在寫代碼');
};

function coder()
{
    this.name = '現代魔法';
    this.job = '程序員';
    if (typeof(coder._init) == 'undefined')
    {
        this.coding = function ()
        {
            alert('我正在寫代碼');
        };
        this._init = true;
    }
}