Question: I am new to HTML and have used Eclipse for Java before. Below I am trying to have the user input a number (0-5) and have the computer try and guess it. 

I have looked this over and it seems sound, the only thing that I have never done is put an item equal to another item at the end of the loop. 

Also first time using not statements (`is it !== or !=?`) in `HTML/JavaScript`. 

**HTML**

```
<p>How many fingers am I holding up?</p>
<input id="fingers"></input>
<div>
    <button id="button">Input fingers</button>
</div>

```

**JavaScript**

```
var i = 0;
var cg = 0;

document.getElementById("button").onclick = function() {
    while (i !== fingers) {
        cg = Math.random();
        cg = cg * 6;
        cg = Math.floor(cg);

        if (document.getElementById("cg").value !== fingers) {
            alert("Wrong we found " + cg);
            i = cg;
        } else {
            alert("The number of fingers is " + cg);
            i = cg;
        }
    }
}

```

I am independently learning this for future use, I hope you can help! Thanks.

Answer: 
You don't have html element with id `cg`, so this line fails `document.getElementById("cg").value`. However you have `fingers` as an html textbox.

> 
> Also first time using not statements (is it !== or !=?) in
>  HTML/JavaScript.
> 
> 
> 

In js, both are valid but they differ in functionality, `!=` has an overhead of conversion. For e.g.

```
5 != '4' // true
5 != '5' // false

5 !== '4' // true
5 !== '5' // true

5 !== 5 // false
5 !== 4 // true

```

I tried to rectify your code and I ended up with this, hope it helps:

```
<script type="text/javascript">

var cg;
var fingers = document.getElementById("fingers");

document.getElementById("button").onclick=function() {
  cg = Math.floor(Math.random()  * 6);
  if (fingers.value != cg) {
    alert ("Wrong, it was: " + cg);
  }
  else {
    alert ("Right !!");
  }
};
</script>

```
Check your IDs! Your JS is trying to find an element that is identified as 'cg', but the only IDs I see are 'button' and 'fingers'.