javaScript案例代码-计算机与信息技术学院网站

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<!DOCTYPE html> 
<html> 
<head> 
</head> 
<body> 
期数： 
<input type="text" id="qishu1" name="qishu" value="8" size="5"> 
总额： 
<input type="text" id="zonge1" name="zonge" size="10"> 
赔率： 
<input type="text" id="peilv1" name="peilv" value="0.97" size="8"> 
<button onclick=change()>提交</button> 


<table border="1" id='fxb1'> 
<caption>试验表格</caption> 
<tr><th>期号</th><th>本期额度</th><th>累积额度</th><th>本期利润</th><th>累积利润</th></tr> 
<tr><td></td><td></td><td></td><td></td><td></td></tr> 
<tr><td></td><td></td><td></td><td></td><td></td></tr>
<tr><td></td><td></td><td></td><td></td><td></td></tr> 
<tr><td></td><td></td><td></td><td></td><td></td></tr> 
<tr><td></td><td></td><td></td><td></td><td></td></tr> 
<tr><td></td><td></td><td></td><td></td><td></td></tr> 
<tr><td></td><td></td><td></td><td></td><td></td></tr> 
<tr><td></td><td></td><td></td><td></td><td></td></tr> 
<tr><td></td><td></td><td></td><td></td><td></td></tr> 
<tr><td></td><td></td><td></td><td></td><td></td></tr> 
<tr><td></td><td></td><td></td><td></td><td></td></tr> 
<tr><td></td><td></td><td></td><td></td><td></td></tr> 
</table> 
</br>
</br> 
<table border="1" cellspacing="0" cellpadding="5"> 
<caption>随机选择<button onclick=clr()>清空</button></caption> 
<tr> 
<td> 
方式： 
</td> 
<td> 
<button onclick='start("randWay", 0, 2)'>开始</button> 
<input type="text" id="randWay" name="randomWay" size="1"> 
<button onclick=end()>停止</button> 
</td> 
</tr> 
<tr> 
<td> 
数字： 
</td> 
<td> 
<button onclick='start("randNum", 1, 10)'>开始</button> 
<input type="text" id="randNum" name="randomNum" size="1"> 
<button onclick=end()>停止</button> 
</td> 
</tr> 
<tr> 
<td> 
双面： 
</td> 
<td> 
<button onclick='start("randGsbqw", 3, 5)'>位置</button> 
<input type="text" id="randGsbqw" name="randomGsbqw" size="1"> 
<button onclick=end()>停止</button> 
<button onclick='start("randDxds", 2, 4)'>双面</button> 
<input type="text" id="randDxds" name="randomDxds" size="1"> 
<button onclick=end()>停止</button> 
</td> 
</tr> 
</table>

<script> 

///////////////////// 
var objInterval; 
function myRand(objId, flag, max) 
{ 

var n = Math.random(); 
n = Math.floor(n*max); 
var rst = convertToDes(n, flag); 
document.getElementById(objId).value = rst; 
} 
function convertToDes(n, flag) 
{ 

var rst = n; 
switch(flag) 
{ 
case 0: 
rst = (n == 0 ? "双面" : "数字" ); 
break; 
case 1:break; 
case 2: 
switch(n) 
{ 
case 0: 
rst = "大";break; 

case 1: 
rst = "小";break; 
case 2: 
rst = "单";break; 
case 3: 
rst = "双";break; 
} 
break; 
case 3: 
switch(n) 
{ 
case 0: 
rst = "个";break; 

case 1: 
rst = "十";break; 
case 2: 
rst = "百";break; 
case 3: 
rst = "千";break; 
case 4: 
rst = "万";break; 
} 
break; 

} 
return rst; 
} 

function start(objId, flag, max) 
{ 
var para = "myRand(\"" + objId + "\"," + flag + "," + max + ")"; 
clearInterval(objInterval); 
objInterval = setInterval(para, 100); 
} 
function end() 
{ 
clearInterval(objInterval); 
} 
function clr() 
{ 
document.getElementById('randWay').value = ""; 
document.getElementById('randNum').value = ""; 
document.getElementById('randGsbqw').value = ""; 
document.getElementById('randDxds').value = ""; 
}
//////////////

function change(){ 
var qishu0=document.getElementById('qishu1').value; 
var zonge0=document.getElementById('zonge1').value; 
var peilv0=document.getElementById('peilv1').value; 
var zonge8=0; 
var total=new Array(); //先声明一维 
for(var i=0;i<qishu0;i++){ //一维长度为10 
total[i]=new Array(); //在声明二维 
for(var j=0;j<5;j++){ //二维长度为20 
total[i][j]=1; 
}} 
var x=1; 
while(true){ 
var y=0; 
var z=0; 
var k=0; 
for(var i=1;i<=qishu0;i++){ 

y=(k+i*x*peilv0)/peilv0; 
total[i-1][0]=i; 
total[i-1][1]=Math.round(y); 
total[i-1][2]=Math.round(y+k); 
k=total[i-1][2]; 
total[i-1][3]=(total[i-1][1]*peilv0).toFixed(2); 
total[i-1][4]=(total[i-1][3]- (i>1 ? total[i-2][2]:0)).toFixed(2); 
} 

if(k>=zonge0)break; 
x=x+0.1; 
} 
for(var i=1;i<=qishu0;i++){ 
for(var j=0;j<=4;j++){ 
document.getElementById('fxb1').rows[i].childNodes[j].innerText=total[i-1][j]; 
} 
} 
} 
</script>
</body>
</html>