function myClass(a,b,c) {
this.alertMyName=function(){alert(instancename)}
{...}
}
and then
foo = myClass(a,b,c);
boo = myClass(a,b,c);
foo.alertMyName(); //it should alert 'foo'
boo.alertMyName(); //it should alert 'boo'
In practice I'll need it for class that is creating a lot of html objects to prefix their ID's to differentiate them from same object created by another instance of this class.
I Couldn't find a solution on Stack Overflow so here is a solution I found from ronaldcs on dforge.net: http://www.dforge.net/2013/01/27/how-to-get-the-name-of-an-instance-of-a-class-in-javascript/
myObject = function () {
this.getName = function () {
// search through the global object for a name that resolves to this object
for (var name in window)
if (window[name] == this)
return name;
};
};
Try it Out:
var o = new myObject();
alert(o.getName()); // alerts "o"
You could bring it in as a parameter:
function myClass(name, a, b, c) {
this.alertMyName = function(){ alert(name) }
}
foo = new myClass('foo', a, b, c);
Or assign it afterwards:
function myClass(a, b, c) {
this.setName = function(name) {
this.name = name;
}
this.alertMyName = function(){
alert(this.name)
}
}
foo = new myClass( a,b,c);
foo.setName('foo');
Further to David's answer, variables in javascript have a value that is either a primitive or a reference to an object. Where the value is a reference, then the thing it references has no idea what the "name" of the variable is.
Consider:
var foo = new MyThing();
var bar = foo;
So now what should foo.alertMyName() return? Or even:
(new MyThing()).alertMyName();
If you want instances to have a name, then give them a property and set its value to whatever suits.
this.