js编写算24点小游戏
程序代码：<head>
<title>24点游戏</title>
<meta http-equiv="content-type" content="text/html";charset=utf-8>
<style>
body {background-color:buttonface;}
#text_result {
background-color:#6090da;
border:black solid 1px;
color:white;
font-weight:bold;
height:20px;
}
</style>
<script type="text/javascript">
<!--
var v1,v2,v3,v4,v5,text_result;
function $(str){return(document.getElementById(str));}
function call(val1,val2,val3,val4)
{
thearray0=new Array(val1,val2,val3,val4);
thearray1=new Array('1234','1243','1324','1342','1423','1432',
'2134','2143','2341','2314','2413','2431','3124','3142','3241','3214','3412','3421','4123','4132','4213','4231','4312','4321');
thearray2=new Array('+' ,'-','*', '/');
a1=parseInt(v5.value);
for(var ii=0;ii<24;ii++)
{
thearray3=thearray1[ii].split('');
for(var mm=0;mm<4;mm++)
{
thearray3[mm]=parseInt(thearray3[mm]);
}
for(var jj=0;jj<4;jj++){
for(var kk=0;kk<4;kk++){
for(var ll=0;ll<4;ll++)
{
ss1=thearray0[therray3[0]-1]+thearray2[jj]+therray0[thearray3[1]-1]+thearray2[kk]+thearray0[thearray[2]-1]+thearray2[ll]+thearray0[thearray3[3]-1];
if(eval(ss1)==a1)
{return(ss1);}
ss1='('+thearray0[thearray3[0]-1]+thearray2[jj]+thearray0[thearray3[1]-1]+')'+thearray2[kk]+thearray0[thearray[2]-1]+thearray2[ll]+thearray0[thearray3[3]-1];
if(eval(ss1)==a1)
{return(ss1);}
ss1=thearray0[thearray3[0]-1]+thearray2[jj]+'('+thearray0[thearray3[1]-1]+thearray2[kk]+thearray0[thearray[2]-1]+')'+thearray2[ll]+thearray0[thearray3[3]-1];
if(eval(ss1)==a1)
{return(ss1);}
ss1=thearray0[thearray3[0]-1]+thearray2[jj]+thearray0[thearray3[1]-1]+thearray2[kk]+'('+thearray0[thearray[2]-1]+thearray2[ll]+thearray0[thearray3[3]-1]+')';
if(eval(ss1)==a1)
{return(ss1);}
ss1='('+thearray0[thearray3[0]-1]+thearray2[jj]+thearray0[thearry3[1]-1]+thearray2[kk]+thearray0[thearray[2]-1]+')'+thearray2[ll]+thearray0[thearray3[3]-1];
if(eval(ss1)==a1)
{return(ss1);}
ss1=thearray0[thearray3[0]-1]+thearray2[jj]+'('+thearray0[thearray3[1]-1]+thearray2[kk]+thearray0[thearray[2]-1]+thearray2[ll]+thearray0[thearray3[3]-1]+')';
if(eval(ss1)==a1)
{return(ss1);}
}
}}}
return(false);
}
function check1(boj1)
{
if(isNaN(boj1.value))
{
alert("请输入数值");
boj1.focus();
boj1.select();
event.returnValue=false;
event.cancelBubble=true;
return(false);
}
}
function init()
{
v1=$("v1");
v2=$("v2");
v3=$("v3");
v4=$("v4");
v5=$("v5");
text_result=$("text_result");
v1.select();
}
function main()
{
var s1=call(v1.value,v2.value,v3.value,v4.value);
if(s1)
{
text_result.innerText+='\n'+s1+'=='+v5.value;
}
else
{
text_result.innerText+='\n'+v1.value+','+v2.value+','+v3.value+','+v4.value+','+v5.value+' 无效果!';
}
init();
return(false);
}
-->
</script>
</head>
<body style="overflow:auto;" onload="init();">
<form onsubmit="return(main());">
<b>请输入要计算的四个数:</b><br>
<input id="v1" onchange="check1(this);">
<input id="v2" onchange="check1(this);"><br>
<input id="v3" onchange="check1(this);">
<input id="v4" onchange="check1(this);"><br>
<b>请输入要计算的目标结果:</b>
<input id="v5" onchange="check1(this);" value="24"><br>
<input type="submit" value="计算">
<input type="reset" onclick="clear_input();" value="清除结果">
</form>
<b>结果:</b><br>
<div id="text_result" ><div>
</body>
</html>根据书里代码是这样写的，输入四个数字之后，点击“计算”没有效果。请大家帮我看看
