XML/HTML Code復(fù)制內(nèi)容到剪貼板
- <html>
- <head>
-
- <title>購物數(shù)量小程序</title>
-
- <script>
- function sub()
- {
-
- var a = buy.ans.value;
- //alert(a);
- a = parseInt(a);
- a--;
- if(a<0)
- a = 0;
- buy.ans.value = a;
- }
- function add()
- {
- var a = buy.ans.value;
- a = parseInt(a);
- a++;
- buy.ans.value = a;
- }
- </script>
-
- </head>
-
- <body>
- <form name="buy">
- 購買數(shù)量<input type="button" value="-" onclick="sub()">
- <input type="text" name="ans" value="1">
- <input type="button" value="+" onclick="add()">
-
- </form>
- </body>
- </html>
-
