计算器

<html>
<title>计算机
</title>
<head>
<script type="text/javascript">
var calc = {
first:0, second:0, result:0, init:
function(){  this.first = parseInt(document.getElementById("first").value);  this.second = parseInt(document.getElementById("second").value); }, setResult:
function(){document.getElementById("result").value = this.result}, add:
function(){
       this.init();   this.result = this.first + this.second;   this.setResult();   }
   };
</script> </head>
<form id="jisuanqi" action="#">
  <table width="620" align="center">
<tr><td width="191"> <label for="first">数字1：</label>
<input id="first" type="text" size="12" /></td><td width="190">
<label for="second">数字2：</label>
<input id="second" type="text"  size="12"/> </td><td width="153">   <label for="result">结果：</label>
<input id="result" type="text"  size="12"/></td><td width="66"><button onClick="calc.add();;return false;" value="加" >加</button></td>
</tr>
  <tr><td width="191"> <label for="first">数字1：</label>
<input id="first" type="text" size="12" /></td><td width="190">
<label for="second">数字2：</label>
<input id="second" type="text"  size="12"/> </td><td width="153">   <label for="result">结果：</label>
<input id="result" type="text"  size="12"/></td><td width="66"><button onClick="calc.minus();;return false;" value="减" >减</button></td>
</tr>
  <tr><td width="191"> <label for="first">数字1：</label>
<input id="first" type="text" size="12" /></td><td width="190">
<label for="second">数字2：</label>
<input id="second" type="text"  size="12"/> </td><td width="153">   <label for="result">结果：</label>
<input id="result" type="text"  size="12"/></td><td width="66"><button onClick="calc.plus();;return false;" value="乘" >乘</button></td>
</tr>
  <tr><td width="191"> <label for="first">数字1：</label>
<input id="first" type="text" size="12" /></td><td width="190">
<label for="second">数字2：</label>
<input id="second" type="text"  size="12"/> </td><td width="153">   <label for="result">结果：</label>
<input id="result" type="text"  size="12"/></td><td width="66"><button onClick="calc.divide();;return false;" value="除" >除</button></td>
</tr>
</table>
</form>
</html>
<html>
<head><title>计算器</title>
</head>
<script language="javascript">
function aa() {  //alert(document.form2.textfield.value);
var len=document.form2.textfield.length;


   number=number.substr(0,len-1);
   document.computer.result.value=number;
document.form2.textfield.value=textfield;
   }
</script>
<script language="javascript">//Back
function  tt()
{var dd=document.form2.textfield.value;
    /*for ( var i=dd.length;i>0;i--)
    {
var c=var c+dd[i];

}*/
var d=dd.substring(dd.lastIndexOf(0,1));
document.form2.textfield.value=d;}
</script>
<script language="javascript">//a的b次方
function ab3()
{}
</script>
<script  language="javascript">//立方
function lifang()
{
var m=lifang1(document.form2.textfield.value);
document.form2.textfield.value=m;
}
function lifang1(k)
{
return k*k*k;
}</script>
<script  language="javascript">//1/X
function  zhiyi()
{
var m=zhiyi1(document.form2.textfield.value);
document.form2.textfield.value=m;
}
function zhiyi1(k)
{return 1/k;}
</script>
<script  language="javascript">//平方
function pingfang()
{
var m=pingfang1(document.form2.textfield.value);
document.form2.textfield.value=m;}
function pingfang1(k)
{  return k*k;
//document.write(number);

}
</script>
<script language="javascript">
function jis()
{
document.form2.textfield.value=eval(document.form2.textfield.value);
}
function ggg(shuzi)
{
if (document.form2.textfield.value==0)
{
document.form2.textfield.value=shuzi;}
else
{document.form2.textfield.value=document.form2.textfield.value+shuzi;}}
function qingling()
{
document.form2.textfield.value=0;
}
function Backspace()
{
//document.form2.textfield.value}
function ABS()//绝对值
{
document.form2.textfield.value=Math.abs(document.form2.textfield.value);}</script><script language="javascript">//阶乘
function jiecheng(k)
{
if (k>1)
    {
  return k*jiecheng(k-1);
//document.write(number);

}
else
{
return k;
}
//document.write(gg);

}function jiecheng1()
{ var m=jiecheng(document.form2.textfield.value);
document.form2.textfield.value=m;
} </script>
<script  language="javascript">
function jiajian()//正负号转变{var n=jiajian1(document.form2.textfield.value);
document.form2.textfield.value=n;
}
function jiajian1(q)
{
if(q>0)
{
return  -q;
}
else
//if(q<=0)
{
return  -q;
}
}
</script>
<script language="javascript">//Backspace退格
function Backspace()
{
var j=jiajian1(document.form2.textfield.value);}
</script>
<script language="javascript">
function sqrt()
{
var dd=document.form2.textfield.value;
var ee= Math.sqrt(dd);
document.form2.textfield.value=ee;}
  </script>
<body>
<form id="form2" name="form2" method="post" action="">
  <p> </p>
  <table width="406" height="200" border="2" align="center" cellpadding="4" cellspacing="2" bgcolor="#006633">
    <tr>
      <td colspan="6"><div align="center">
          <label>
          <input name="textfield" type="text" value="0" size="50" />
          </label>
        </div>
          <div align="center"></div>
        <div align="center"></div>
        <div align="center"></div>
        <div align="center"></div>
        <div align="center"></div></td>
    </tr>
    <tr>
      <td width="62"><div align="center">

        <input name="Submit" type="button" value="Sqrt " width="15"  onclick="sqrt()"/>

      </div></td>
      <td colspan="2"><div align="center">
        <input name="Submit2" type="button" value="Backspace" onclick="aa(); return false;" />
      </div>        </td>
      <td width="58"><div align="center">
        <input name="Submit4" type="button" value=" CE " onclick="qingling()"/>
      </div></td>
      <td colspan="2"><div align="center">
        <input name="Submit5" type="button" value=" C  " onclick="qingling()" />
      </div></td>
    </tr>
    <tr>
      <td><div align="center">
        <input name="Submit7" type="button" value="Square" onclick="pingfang()" />
      </div></td>
      <td ><div align="center">
        <input name="7" type="button" value=" 7 "onclick="ggg(this.name)" />
      </div></td>
      <td ><div align="center">
        <input name="8" type="button" value=" 8 " onclick="ggg(this.name)"/>
      </div></td>
      <td><div align="center">
        <input name="9" type="button" value=" 9 " onclick="ggg(this.name)" />
      </div></td>
      <td width="66"><div align="center">
        <input name="/" type="button" value=" / " onclick="ggg(this.value)"/>
      </div></td>
      <td ><div align="center"><input name="Submit12" type="button" value="ABS"  onclick="ABS()"/>
     </div>
      <div align="center"></div></td>
    </tr>
    <tr>
      <td><div align="center">
        <input name="Submit13" type="button" value="1 / X"  onclick="zhiyi()"/>
      </div>
      <div align="center"></div></td>
      <td width="43"><div align="center">

        <input name="4" type="button" value=" 4 " onclick="ggg(this.name)"/>
</div></td>
      <td><div align="center">
        <input name="5" type="button" value=" 5 " onclick="ggg(this.name)"/>
      </div></td>
      <td><div align="center">
   <input name="6" type="button" value=" 6 " onclick="ggg(this.name)"/>
      </div></td>
      <td>  <div align="center">
          <input name="*" type="button" value=" * "onclick="ggg(this.value)" />
        </div>        </td>
      <td><div align="center">
        <input name="Submit18" type="button" value=" ！"  onclick="jiecheng1()"/>
      </div></td>
    </tr>
    <tr>
      <td><div align="center">
        <input name="Submit19" type="button" value="X   3" onclick="lifang()" />
      </div></td>
      <td><div align="center">
        <input name="1" type="button" value=" 1 " onclick="ggg(this.name)"/>
      </div></td>
      <td><div align="center">
        <input name="2" type="button" value=" 2 "onclick="ggg(this.name)" />
      </div></td>
      <td><div align="center">
        <input name="3" type="button" value=" 3 "onclick="ggg(this.name)" />
      </div></td>
      <td><div align="center">
        <input name="-" type="button" value=" - "onclick="ggg(this.name)" />
      </div></td>
      <td><div align="center"><input name="%" type="button" value=" % " onclick="ggg(this.name)"/>
      </div></td>
    </tr>
    <tr>
      <td><div align="center">
        <input name="Submit25" type="button" value="A   b" />
      </div></td>
      <td><div align="center">
        <input name="0" type="button" value=" 0 " onclick="ggg(this.name)"/>
      </div></td>
      <td><div align="center">
        <input name="Submit27" type="button" value=" +/- " onclick="jiajian()" />
      </div></td>
      <td><div align="center">
        <input name="." type="button" value=" . "onclick="ggg(this.name)" />
      </div></td>
      <td><div align="center">
        <input name="Submit29" type="button" value=" + " onclick="ggg(this.value)"/>
      </div></td>
      <td><div align="center">
        <input name="Submit30" type="button" value=" = " onclick="jis(this.value)" />
      </div></td>
    </tr>
  </table>
  <p> </p>
</form>
</body>
</html>

解决方案 »