| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> | |
| <html xmlns="http://www.w3.org/1999/xhtml"> | |
| <head> | |
| <meta http-equiv="content-type" content="text/html;charset=gb2312"> | |
| <title>網頁特效 計算選中的多選框checkbox值的總和</title> | |
| <!--把下面代碼加到<head>與</head>之間--> | |
| <script type="text/javascript"> | |
| var sum=0; | |
| function shops(o){ | |
| sum+=parseInt(o.checked?o.value:-o.value);//如果選中就加選中的那個複選框的值，否則就減去 | |
| document.getElementById('gong').innerHTML='共'+sum+'元'; | |
| } | |
| </script> | |
| </head> | |
| <body> | |
| <form name="form1" action="" target="_blank"> | |
| <input name="shop" id="shop_1" type="checkbox" value="10" onclick="shops(this)"><label for="shop_1">10元</label> | |
| <input name="shop" id="shop_2" type="checkbox" value="20" onclick="shops(this)"><label for="shop_2">20元</label> | |
| <input name="shop" id="shop_3" type="checkbox" value="30" onclick="shops(this)"><label for="shop_3">30元</label> | |
| <input name="shop" id="shop_4" type="checkbox" value="40" onclick="shops(this)"><label for="shop_4">40元</label> | |
| <input name="shop" id="shop_5" type="checkbox" value="50" onclick="shops(this)"><label for="shop_5">50元</label> | |
| <input type="submit" name="submit1" value="提交"> | |
| </form> | |
| <div id="gong">共0元</div> | |
| </body> | |
| </html> |