Get name of instance of object in JavaScript

Question

I have a code like the one bellow and want to detect the instance name of my exScript.

In this case it would be exScript123.

eecore = {
    something: 1,
    // ...
    someelse: function() { /* whatever */ };
};

var exScript = (function (undefined) {
    function exScript(inputOptions) {
        this.version = "0.0";
    }
    exScript.prototype.init = function () {
        // some code here
    };
    return exScript;
})();

eecore.exScript123 = new exScript();
eecore.exScript123.init();

I have been experimenting for the last hour with arguments.calle.name and this.parent.name but they do not seem to work in my case. I keep getting undefined.

Answer 1

Slightly modified version of this code:

function objectName(x, context, path) {

    function search(x, context, path) {
        if(x === context)
            return path;
        if(typeof context != "object" || seen.indexOf(context) >= 0)
            return;
        seen.push(context);
        for(var p in context) {
            var q = search(x, context[p], (path ? path + "." : "") + p);
            if(q)
                return q;
        }
    }

    var seen = [];
    return search(x, context || window, path || "");
}

In your init function

    exScript.prototype.init = function () {
        console.log(objectName(this, eecore))
    };

correctly prints exScript123.

As pointed out in the comments, this is unreliable and a strange idea in general. You might want to clarify why you need that - surely there are better ways.