dltypeof - Custom JS typeof operator - DHTML Lab | 2

Using dltypeof()

Use dltypeof() whereever you would use typeof().

JS Objects

All the JS objects that are identified as "object" by typeof() are given more meaningful and obvious identifiers.

The JS Object object has a type of "jsobject" to clearly identify it as a JS object and to differentiate it from any other "object" that dltypeof() may fail to isolate as a unique type.

The JS Function.arguments object is given its own type of "arguments" since it is not a true array.

Any JS object that you create with a constructor function is identified with the name of the constructor function.
For example, let's say you create car objects with the following syntax:

function car( sMake, sModel, nWheels )
{
    this.sMake = sMake;
    this.sModel = sModel;
    this.nWheels = nWheels;
}
var oMerc = new car( "Mercedes", "Grand Sports Tourier", 4 );
var oToy  = new car( "Toyota", "Corolla", 4 );

Then:

dltypeof( oMerc ) returns "car"
dltypeof( oToy )  returns "car"

The following table lists all the possible return values for JS objects as well as the original typeof() return values

dltypeof() also identifies DOM objects.