How do you check if a JavaScript Object is a DOM Object?

Question

I\'m trying to get:

document.createElement(\'div\')  //=> true
{tagName: \'foobar something\'}  //=> false

In my own scripts, I used

Answer 1

differentiate a raw js object from a HTMLElement

function isDOM (x){
     return /HTML/.test( {}.toString.call(x) );
 }

use:

isDOM( {a:1} ) // false
isDOM( document.body ) // true

// OR

Object.defineProperty(Object.prototype, "is",
    {
        value: function (x) {
            return {}.toString.call(this).indexOf(x) >= 0;
        }
    });

use:

o={}; o.is("HTML") // false o=document.body; o.is("HTML") // true