Question: I have created a function which tells whether a variable hold jQuery object or on is there any substitute of this. Below is my code

```
/*Is there any substitute of this function*/

function iSJqueryObj(elm)
{
    return elm && jQuery.isFunction(elm.html);
} 

```

<http://jsfiddle.net/kE7Lp/3/>

Answer: 
Use [`instanceof`](https://developer.mozilla.org/en/JavaScript/Reference/Operators/instanceof):

```
console.log(elm instanceof jQuery);

```

or:

```
console.log(elm instanceof $);

```

Demo: <http://jsfiddle.net/karim79/8jUKX/>
Try the **instance of**

```
obj instanceof jQuery

```