猜数游戏

『更新时间：2006-4-1 』『字体：变小变大』『作者：未知 | 来源：网络』

把如下代码加入<body>区域中:
要完成此效果需要两个步骤

第一步：把如下代码加入到<body>区域中

<SCRIPT LANGUAGE="JavaScript">
var js_mult1=3141
var js_mult2=5821
var js_m1=100000000
var js_m2=10000
var js_iseed=0
var js_iseed1=0
var js_iseed2=0
function random(n)
{
    if (js_iseed == 0)
    {
        now = new Date()
        js_iseed = now.getHours() + now.getMinutes() * 60 
                    + now.getSeconds() * 3600
    }
    js_iseed1 = js_iseed / js_m2
    js_iseed2 = js_iseed % js_m2
    var tmp = (((js_iseed2 * js_mult1 + js_iseed1 * js_mult2) % js_m2) * 
                js_m2 + (js_iseed2 * js_mult2)) % js_m1
    js_iseed = (tmp + 1) % js_m1
    return (Math.floor((js_iseed/js_m1) * n))
}
var myNumber = 0
var nGuesses = 0
function guessnum()
{
   var response
    var num = parseInt(document.forms[0].guess.value)
    document.forms[0].guess.value = num // visual feedback in case of NaN
    nGuesses++ // increase the guess count
    response = "哦，你猜的数 "
    if (num < myNumber)    response = response + "太小了"
    if (num > myNumber)    response = response + "太大了"
    if (num == myNumber) 
    {
        response = response + "对了！！你猜到我了！"
        nGuesses = 0
        myNumber = random(100)+1
    }
    document.forms[1].result.value=response
    document.forms[1].guesses.value=nGuesses
    document.forms[0].guess.focus()
    document.forms[0].guess.select()
    return true
}
function giveup()
{
    var response
    nGuesses = 0
    response = "我的数字是" + myNumber +".  想猜我的新数吗？"
    myNumber = random(100)+1
    document.forms[1].result.value=response
    document.forms[1].guesses.value=nGuesses
    document.forms[0].guess.focus()
    document.forms[0].guess.select()
}
</SCRIPT>

<font size="3" color="#FF0000">
我手中有一个数，它的范围在1~100之间，你能猜到它是几吗？</font></b><font size="4"> 
</font>
<SCRIPT>
    myNumber = random(100)+1
    nGuesses = 0
</SCRIPT>
<FORM onSubmit="guessnum(); return false">
填入你猜的数: <INPUT TYPE="text" NAME="guess" SIZE=5>  
<INPUT TYPE="button" VALUE="     我来猜   " onClick="guessnum()">  
<INPUT TYPE="button" VALUE="  放弃  " onClick="giveup()">  
</FORM>  
<FORM>
你已猜了: <INPUT TYPE="text" NAME="guesses" SIZE=3>次
提示信息: <INPUT TYPE="text" NAME="result" SIZE=35>
</FORM>

第二步：把“onLoad="document.forms[0].guess.focus();

document.forms[0].guess.select()"”加在<body>标记里
例如：<body onLoad="document.forms[0].guess.focus();

document.forms[0].guess.select()">

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猜数游戏

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