从成员方法内访问javascript对象引用

好的,我想知道是否可以将对象的引用转移到函数。如果你不明白我想说什么,这可能有帮助:

//so i declare the variable `Editor`
var Editor = new (function(e, d){
    this.edit = e;
    this.dyna = d;
    this.old = ""; //and set these variables inside the object

    this.update = function() {
        var ta = $(Editor.edit)[0].value, dy = $(Editor.dyna)[0].contentDocument;
        //what i want is to be able to refer to the variables (ie. "edit") without using "Editor."
        if (Editor.old !== ta) {
            $(dy).text(ta);
            Editor.old = ta;
        }
        window.setTimeout(Editor.update, 150);
    }

    return this;
})("editor","dynamic");

因此,对于更新功能,我希望能够做一些类似的事情:

this.update = function() {
    var ta = $(edit)[0].value, dy = $(dyna)[0].contentDocument;
    if (old !== ta) {
        $(dy).text(ta);
        old = ta;
    }
    window.setTimeout(update, 150);
}

它给了我变量(编辑,DYNA,旧)。 Editor 对象。 谢谢。