<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>수량 증가/감소 (JQuery로 작성.)</title>
<script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>
<script type="text/javascript">
/**
* 수량 증가/감소 (JQuery로 작성.)
*/
function modifyProductQuantity(id, quantity){
if(isNaN($("#"+id).val())){
alert( '숫자만 입력가능 합니다.' );
$("#"+id).focus();
$("#"+id).val(0);
return;
}
//var v = parseFloat($("#"+id).val())+parseFloat(quantity);
//$("#"+id).val(Math.round(v*10)/10);
var q = parseInt($("#"+id).val())+parseInt(quantity);
$("#"+id).val(q);
};
</script>
</head>
<body>
수량 :
<input name="quantity" id="quantity" style="vertical-align:middle; text-align:right" size="5" maxlength="4" value="0" />
<img style="vertical-align:middle;" alt="수량 증가 감소" src="btn_cnt.gif" usemap="#map_name_quantity"/>
<map id="map_name_quantity" name="map_name_quantity">
<area href="javascript:modifyProductQuantity('quantity',1);" shape="rect" alt="수량 증가" coords="0,0,9,10"/>
<area href="javascript:modifyProductQuantity('quantity',-1);" shape="rect" alt="수량 감소" coords="0,10,9,20"/>
</map>
</body>
</html> |
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