console
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=, initial-scale=">
<meta http-equiv="X-UA-Compatible" content="">
<title></title>
</head>
<body>
看书：<input type="checkbox" name="checkbox" value=1><br>
写字：<input type="checkbox" name="checkbox"value=2><br>
打飞机：<input type="checkbox" name="checkbox"value=3><br>
玩游戏：<input type="checkbox" name="checkbox"value=4><br>
<button onclick="opcheckboxed('checkbox','checkall')">全选</button>
<button onclick="opcheckboxed('checkbox','uncheckall')">取消全选</button>
<button onclick="opcheckboxed('checkbox','reversecheck')">反选</button>
</body>
</html>