一个游戏，前20关是每一关自身的分数，
//21-30关每一关是10分
//31-40关，每一关是20分
//41-49关，每一关是30分
//50关，是100分
<!DOCTYPE html><html> ???<head> ???????<meta charset="UTF-8"> ???????<title></title> ???</head> ???<body> ???</body></html><script type="text/javascript"> ???var guanQia = parseInt(prompt("请输入第几关")) ???if (guanQia<=20) { ???????alert(guanQia) ???} ????else if (guanQia>20 && guanQia<=30 ){ ???????(guanQia=(guanQia-20)*10+20) ???????alert(guanQia) ???} ???else if (guanQia>30 && guanQia<=40){ ???????(guanQia=(guanQia-30)*20+120) ???????alert(guanQia) ???} ???else if (guanQia>40 && guanQia<=49){ ???????(guanQia=(guanQia-40)*30+320) ???????alert(guanQia) ???} ???else if (guanQia=50){ ???????(guanQia=100+590) ???????alert(guanQia) ???}</script>JS怎样计算过关分数
原文地址：https://www.cnblogs.com/hankai2735/p/8760960.html