press + to active input text label field in form

i have normal form like this :

<form class='modal-content animate' action='' method='post'>

Goods name : <input type='text' name='goods-name' style='width:100%; height: 40px; ' autocomplete='off'> <br>

Goods count : <input type='text' name='goods-count' style='width:100%; height: 40px; ' autocomplete='off'>

</form>

i need : – if i press key (+) any where on page active the label of goods name to write . thanx