/documentation/appframework/$.cleanUpContent.md

#$.cleanUpContent(node,itself,kill)

```

Function to clean up node content to prevent memory leaks
 
```

##Example

```
 $.cleanUpContent(node,itself,kill)
 
```


##Parameters

```
node                          HTMLNode
kill                          Bool
Kill                          bool

```

##Returns

```
undefined
```

##Detail

$.cleanUpContent(node,[itself],[kill]) traverses through the dom and tries to de-regster any event listeners to prevent memory leaks.

This is called internally by $().html() and $().empty().  It does slow down those operations, but the gain is worth it.

Below is the code for $().html() to show how we use it

```
html: function (html, cleanup) {
    if (this.length === 0)
        return this;
    if (html ===nundefined)
        return this[0].innerHTML;

    for (var i = 0; i < this.length; i++) {
        if (cleanup !== false)
            $.cleanUpContent(this[i], false, true);
        if(isWin8)
        {
            MSApp.execUnsafeLocalFunction(function(){
                this[i].innerHTML=html;
            });
        }
        else
            this[i].innerHTML = html;
    }
    return this;
},
```