JS image scaling effect code _ image effects

Currently, many websites have the function of freely enlarging and downgrading images. The code here is not good. It is suitable for learning js friends. For more and better code, you can search for articles in the past. The Code is as follows:

OnMouseWheel
SCRIPT
Var count = 10;
Function Picture ()
{
Count = Counting (count );
Resize (count );
Return false;
}
Function Counting (count ){
If (event. wheelDelta> = 120)
Count ++;
Else if (event. wheelDelta <=-120)
Count --;
Return count;
}
Function Resize (count ){
OImage. style. zoom = count + '0% ';
OCounter. innerText = count + '0% ';
}
SCRIPT

Size =
100%