用JavaScript實(shí)現(xiàn) 鐵甲無敵獎(jiǎng)門人 “開口中”猜數(shù)游戲

更新時(shí)間：2009年10月25日 11:15:07 作者：

JavaScript在常人看來都是門出不了廳堂的小語言，僅管它沒有明星語言的閃耀，但至少網(wǎng)頁的閃耀還是需要它的，同時(shí)它是一門很實(shí)用的語言。

在線演示demo
本人平時(shí)就喜歡拿它來寫點(diǎn)實(shí)用工具或應(yīng)用，本文演示用JavaScript實(shí)現(xiàn)的《鐵甲無敵獎(jiǎng)門人》“開口中”猜數(shù)游戲，以后我還會陸續(xù)上傳自己寫的小東西，都是些工作之余的小作。

《鐵甲無敵獎(jiǎng)門人》是TVB綜藝節(jié)目，香港藝人曾志偉就是其中重要的主持人，節(jié)目中有眾多好玩又刺激的游戲，其中有一個(gè)叫“開口中”的猜數(shù)游戲正是本文要實(shí)現(xiàn)的功能。游戲規(guī)則大致是：首先電腦在1到100內(nèi)選一個(gè)數(shù)字作為最終答案（這個(gè)答案嘉賓一開始是不知道的），然后嘉賓輪流喊1到100以內(nèi)的數(shù)字，每喊一次，如果不是答案，就把范圍縮小到嘉賓喊的那個(gè)數(shù)，直到有人喊中答案為止，最后喊中答案的人要接受玩游戲，如果游戲過關(guān)了，不用罰，否則將要受罰。

網(wǎng)頁HTML及JavaScript代碼如下，非常簡單，都寫了注釋，感興趣的就看一下：

復(fù)制代碼代碼如下:

<!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=utf-8" /> 
<title>用JavaScript實(shí)現(xiàn)《鐵甲無敵獎(jiǎng)門人》“開口中”猜數(shù)游戲</title> 
<style type="text/css"> 
* {margin:0; padding:0} 
body {font-size:12px} 
#layout {width:800px; height:500px; text-align:center; margin:25px auto; border:2px solid #999; background:#CCC; position:relative} 

#numRange {width:200px; font-family:Arial Black; font-size:20px; background:#000; color:#FFF; position:absolute; top:131px; left:72px} 

#currentNum {width:200px; height:200px; font-family:Arial Black; font-size:98px; line-height:200px; background:#999; position:absolute; top:159px; left:72px} 

#mainBtn {width:440px; position:absolute; top:46px; right:22px} 
#mainBtn input {width:140px; height:30px} 

#stateInfo {width:440px; position:absolute; top:91px; right:22px} 

#numBtnList {width:440px; position:absolute; top:121px; right:22px} 
#numBtnList input {display:block; width:40px; height:30px; margin:2px; float:left} 

#copyRight {position:absolute; left:10px; bottom:10px} 
#copyRight a {color:#000; text-decoration:none; display:block; padding:5px 8px} 
#copyRight a:hover {background:#999; color:#FFF; text-decoration:none} 
</style> 
</head> 

<body> 
<div id="layout"> 

<div id="numRange"><span id="minNum">1</span>　→　<span id="maxNum">100</span></div> 

<div id="currentNum">0</div> 

<div id="mainBtn"> 
<input id="startBtn" onclick="guessNum.start()" value="開始" title="開始游戲" type="button" /> 
<input id="helpBtn" onclick="guessNum.showHelp()" value="提示" title="提示答案" type="button" /> 
<input onclick="guessNum.restart()" value="重來" type="button" /> 
</div> 

<div id="stateInfo">State:等待開始游戲</div> 

<div id="numBtnList"> 
<input onclick="guessNum.userInput(1)" value="1" type="button" /> 
<input onclick="guessNum.userInput(2)" value="2" type="button" /> 
<input onclick="guessNum.userInput(3)" value="3" type="button" /> 
<input onclick="guessNum.userInput(4)" value="4" type="button" /> 
<input onclick="guessNum.userInput(5)" value="5" type="button" /> 
<input onclick="guessNum.userInput(6)" value="6" type="button" /> 
<input onclick="guessNum.userInput(7)" value="7" type="button" /> 
<input onclick="guessNum.userInput(8)" value="8" type="button" /> 
<input onclick="guessNum.userInput(9)" value="9" type="button" /> 
<input onclick="guessNum.userInput(10)" value="10" type="button" /> 
<input onclick="guessNum.userInput(11)" value="11" type="button" /> 
<input onclick="guessNum.userInput(12)" value="12" type="button" /> 
<input onclick="guessNum.userInput(13)" value="13" type="button" /> 
<input onclick="guessNum.userInput(14)" value="14" type="button" /> 
<input onclick="guessNum.userInput(15)" value="15" type="button" /> 
<input onclick="guessNum.userInput(16)" value="16" type="button" /> 
<input onclick="guessNum.userInput(17)" value="17" type="button" /> 
<input onclick="guessNum.userInput(18)" value="18" type="button" /> 
<input onclick="guessNum.userInput(19)" value="19" type="button" /> 
<input onclick="guessNum.userInput(20)" value="20" type="button" /> 
<input onclick="guessNum.userInput(21)" value="21" type="button" /> 
<input onclick="guessNum.userInput(22)" value="22" type="button" /> 
<input onclick="guessNum.userInput(23)" value="23" type="button" /> 
<input onclick="guessNum.userInput(24)" value="24" type="button" /> 
<input onclick="guessNum.userInput(25)" value="25" type="button" /> 
<input onclick="guessNum.userInput(26)" value="26" type="button" /> 
<input onclick="guessNum.userInput(27)" value="27" type="button" /> 
<input onclick="guessNum.userInput(28)" value="28" type="button" /> 
<input onclick="guessNum.userInput(29)" value="29" type="button" /> 
<input onclick="guessNum.userInput(30)" value="30" type="button" /> 
<input onclick="guessNum.userInput(31)" value="31" type="button" /> 
<input onclick="guessNum.userInput(32)" value="32" type="button" /> 
<input onclick="guessNum.userInput(33)" value="33" type="button" /> 
<input onclick="guessNum.userInput(34)" value="34" type="button" /> 
<input onclick="guessNum.userInput(35)" value="35" type="button" /> 
<input onclick="guessNum.userInput(36)" value="36" type="button" /> 
<input onclick="guessNum.userInput(37)" value="37" type="button" /> 
<input onclick="guessNum.userInput(38)" value="38" type="button" /> 
<input onclick="guessNum.userInput(39)" value="39" type="button" /> 
<input onclick="guessNum.userInput(40)" value="40" type="button" /> 
<input onclick="guessNum.userInput(41)" value="41" type="button" /> 
<input onclick="guessNum.userInput(42)" value="42" type="button" /> 
<input onclick="guessNum.userInput(43)" value="43" type="button" /> 
<input onclick="guessNum.userInput(44)" value="44" type="button" /> 
<input onclick="guessNum.userInput(45)" value="45" type="button" /> 
<input onclick="guessNum.userInput(46)" value="46" type="button" /> 
<input onclick="guessNum.userInput(47)" value="47" type="button" /> 
<input onclick="guessNum.userInput(48)" value="48" type="button" /> 
<input onclick="guessNum.userInput(49)" value="49" type="button" /> 
<input onclick="guessNum.userInput(50)" value="50" type="button" /> 
<input onclick="guessNum.userInput(51)" value="51" type="button" /> 
<input onclick="guessNum.userInput(52)" value="52" type="button" /> 
<input onclick="guessNum.userInput(53)" value="53" type="button" /> 
<input onclick="guessNum.userInput(54)" value="54" type="button" /> 
<input onclick="guessNum.userInput(55)" value="55" type="button" /> 
<input onclick="guessNum.userInput(56)" value="56" type="button" /> 
<input onclick="guessNum.userInput(57)" value="57" type="button" /> 
<input onclick="guessNum.userInput(58)" value="58" type="button" /> 
<input onclick="guessNum.userInput(59)" value="59" type="button" /> 
<input onclick="guessNum.userInput(60)" value="60" type="button" /> 
<input onclick="guessNum.userInput(61)" value="61" type="button" /> 
<input onclick="guessNum.userInput(62)" value="62" type="button" /> 
<input onclick="guessNum.userInput(63)" value="63" type="button" /> 
<input onclick="guessNum.userInput(64)" value="64" type="button" /> 
<input onclick="guessNum.userInput(65)" value="65" type="button" /> 
<input onclick="guessNum.userInput(66)" value="66" type="button" /> 
<input onclick="guessNum.userInput(67)" value="67" type="button" /> 
<input onclick="guessNum.userInput(68)" value="68" type="button" /> 
<input onclick="guessNum.userInput(69)" value="69" type="button" /> 
<input onclick="guessNum.userInput(70)" value="70" type="button" /> 
<input onclick="guessNum.userInput(71)" value="71" type="button" /> 
<input onclick="guessNum.userInput(72)" value="72" type="button" /> 
<input onclick="guessNum.userInput(73)" value="73" type="button" /> 
<input onclick="guessNum.userInput(74)" value="74" type="button" /> 
<input onclick="guessNum.userInput(75)" value="75" type="button" /> 
<input onclick="guessNum.userInput(76)" value="76" type="button" /> 
<input onclick="guessNum.userInput(77)" value="77" type="button" /> 
<input onclick="guessNum.userInput(78)" value="78" type="button" /> 
<input onclick="guessNum.userInput(79)" value="79" type="button" /> 
<input onclick="guessNum.userInput(80)" value="80" type="button" /> 
<input onclick="guessNum.userInput(81)" value="81" type="button" /> 
<input onclick="guessNum.userInput(82)" value="82" type="button" /> 
<input onclick="guessNum.userInput(83)" value="83" type="button" /> 
<input onclick="guessNum.userInput(84)" value="84" type="button" /> 
<input onclick="guessNum.userInput(85)" value="85" type="button" /> 
<input onclick="guessNum.userInput(86)" value="86" type="button" /> 
<input onclick="guessNum.userInput(87)" value="87" type="button" /> 
<input onclick="guessNum.userInput(88)" value="88" type="button" /> 
<input onclick="guessNum.userInput(89)" value="89" type="button" /> 
<input onclick="guessNum.userInput(90)" value="90" type="button" /> 
<input onclick="guessNum.userInput(91)" value="91" type="button" /> 
<input onclick="guessNum.userInput(92)" value="92" type="button" /> 
<input onclick="guessNum.userInput(93)" value="93" type="button" /> 
<input onclick="guessNum.userInput(94)" value="94" type="button" /> 
<input onclick="guessNum.userInput(95)" value="95" type="button" /> 
<input onclick="guessNum.userInput(96)" value="96" type="button" /> 
<input onclick="guessNum.userInput(97)" value="97" type="button" /> 
<input onclick="guessNum.userInput(98)" value="98" type="button" /> 
<input onclick="guessNum.userInput(99)" value="99" type="button" /> 
<input onclick="guessNum.userInput(100)" value="100" type="button" /> 
</div> 

<div id="copyRight"><a  target="_blank">問道者博客：http://blog.csdn.net/webflash</a></div> 

</div> 

<!-- 
TVB綜藝《鐵甲無敵獎(jiǎng)門人》32集視頻地址：http://www.tudou.com/programs/view/M4_z5KU0UFA/ 
“開口中”猜數(shù)游戲環(huán)節(jié)出現(xiàn)在26分鐘后 
--> 

<script type="text/javascript"> 
function clsGuessNum() 
{ 
var answer = 0; //初始化答案為0，用于作為判斷游戲開始與否的依據(jù)，因?yàn)閷?shí)際答案不可能是0 
var currentNum = 0; 
var currentState = ''; 
//初始化數(shù)字范圍邊界，1和100是首次猜數(shù)的最小和最大邊界值 
var minNum = 1; 
var maxNum = 100; 

/** 
* 開始游戲 
*/ 
this.start = function() 
{ 
answer = getRand(2, 99); //生成答案并保存，1~100以內(nèi)的數(shù)字（不包括1和100） 
$('stateInfo').innerHTML = 'State:等待輸入數(shù)字'; 
$('startBtn').setAttribute('disabled', true); 
} 

/** 
* 刷新頁面重新開始游戲 
*/ 
this.restart = function() 
{ 
window.location.reload(); 
//處理Firefox瀏覽器下刷新頁面禁用按鈕無法自動激活問題 
var btnList = document.getElementsByTagName('input'); 
for (var i in btnList) 
{ 
try 
{ 
btnList[i].removeAttribute('disabled'); 
} 
catch (e) 
{ 
} 
} 
} 

/** 
* 提示答案 
*/ 
this.showHelp = function() 
{ 
//如果游戲還沒有開始，不作提示處理 
if (answer != 0) 
{ 
var btnList = document.getElementById('numBtnList').getElementsByTagName('input'); 
btnList[answer - 1].style.color = 'red'; 
$('helpBtn').setAttribute('disabled', true); 
} 
else 
{ 
alert('請先開始游戲！'); 
} 
} 

/** 
* 用戶選號處理函數(shù) 
* @param {Number} num 用戶單次所選號碼 
*/ 
this.userInput = function(num) 
{ 
//如果游戲還沒有開始，直接返回，退出處理 
if (answer == 0) 
{ 
alert('請先開始游戲！'); 
return false; 
} 

currentNum = num; 
//猜中答案 
if (num == answer) 
{ 
minNum = maxNum = num; 
currentState = '您中獎(jiǎng)了:)'; 
currentNum = '<font color="red">' + num + '</font>'; 
} 
else 
{ 
//選擇數(shù)字不在正確數(shù)值范圍內(nèi) 
if (num <= minNum || num >= maxNum) 
{ 
currentState = num + '不在選擇范圍'; 
} 
else 
{ 
if (num > answer) 
{ 
minNum = minNum; 
maxNum = num; 
} 
else if (num < answer) 
{ 
minNum = num; 
maxNum = maxNum; 
} 
//剩下最后一個(gè)數(shù)，下一個(gè)人沒得選了 
if (maxNum - minNum == 2) 
{ 
currentState = '天?。〗酉聛磉€有得選嗎，剩下那個(gè)數(shù)不就是答案了？'; 
} 
else 
{ 
currentState = '等待下次輸入'; 
} 
} 
} 
updateUI(); 
} 

/** 
* getElementById快捷方式 
* @param {Object} objId DOM對象ID 
* @return {DOM} 
*/ 
var $ = function(objId) 
{ 
return document.getElementById(objId); 
} 

/** 
* 更新界面數(shù)據(jù)與UI 
*/ 
var updateUI = function() 
{ 
$('minNum').innerHTML = minNum; 
$('maxNum').innerHTML = maxNum; 
$('currentNum').innerHTML = currentNum; 
$('stateInfo').innerHTML = 'State:' + currentState; 
//禁用不在選擇范圍內(nèi)的數(shù)字按鈕 
var btnList = document.getElementById('numBtnList').getElementsByTagName('input'); 
for (var i in btnList) 
{ 
if (i <= minNum - 1 || i >= maxNum - 1) 
{ 
btnList[i].setAttribute('disabled', true); 
} 
} 
} 

/** 
* 隨機(jī)獲得指定范圍的一個(gè)整數(shù) 
* @param {Number} minNum 最小值 
* @param {Number} maxNum 最大值 
* @return {Number} minNum~maxNum之間的一個(gè)隨機(jī)整數(shù) 
*/ 
var getRand = function(minNum, maxNum) 
{ 
var a = maxNum - minNum; 
var b = Math.random(); 
return (minNum + Math.round(b * a)); 
} 
} 

var guessNum = new clsGuessNum(); 
</script> 
</body> 
</html>