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    • 用JS写个计算器，要有＝－*/，还有10进制换其他的进制

    如题，快，在线＝

    举报该文章
    相关建议   2007-01-15
    <html>
    <head>
    <title></title>
    <SCRIPT LANGUAGE="javascript">
    </SCRIPT>
    </head>
    <body>
    <FORM name=Keypad action="">
    <CENTER>提示：先输入要转换的数,点击相关按钮进行转换。<BR>HEX:将十进制转十六进制 <BR>OCT:将十进制转八进制<BR>BIN:将十进制转二进制 </CENTER>
    <DIV align=center>
    <TABLE height=60 cellSpacing=0 cellPadding=0 width=249 align=center bgColor=#d4d0c8 border=1>
    <TBODY>
    <TR>
    <TD align=middle colSpan=4>
    <P align=center><INPUT class=text_input size=30 value=0 name=ReadOut width="100%"> </P></TD>
    <TD width=0></TD>
    <TD width=50><INPUT class=Button onclick=Clear() type=button value=" C " name=btnClear> </TD>
    <TD><INPUT class=Button onclick=ClearEntry() type=button value=" CE " name=btnClearEntry2> </TD></TR>
    <TR>
    <TD width=50><INPUT class=Button onclick=NumPressed(7) type=button value=" 7 " name=btnSeven> </TD>
    <TD width=50><INPUT class=Button onclick=NumPressed(8) type=button value=" 8 " name=btnEight> </TD>
    <TD width=50><INPUT class=Button onclick=NumPressed(9) type=button value=" 9 " name=btnNine> </TD>
    <TD width=50><INPUT class=Button onclick=hexchange() type=button value=HEX name=btnHex> </TD>
    <TD width=0></TD>
    <TD width=50><INPUT class=Button onclick=Neg() type=button value=" +/- " name=btnNeg> </TD>
    <TD><INPUT class=Button onclick=Percent() type=button value=" % " name=btnPercent> </TD></TR>
    <TR>
    <TD width=50><INPUT class=Button onclick=NumPressed(4) type=button value=" 4 " name=btnFour> </TD>
    <TD width=50><INPUT class=Button onclick=NumPressed(5) type=button value=" 5 " name=btnFive> </TD>
    <TD width=50><INPUT class=Button onclick=NumPressed(6) type=button value=" 6 " name=btnSix> </TD>
    <TD width=50><INPUT class=Button onclick=octchange() type=button value=OCT name=btnClearEntry222> </TD>
    <TD width=0></TD>
    <TD align=middle width=50><INPUT class=Button onclick="Operation('+')" type=button value=" + " name=btnPlus> </TD>
    <TD align=middle><INPUT class=Button onclick="Operation('-')" type=button value=" - " name=btnMinus> </TD></TR>
    <TR>
    <TD width=50><INPUT class=Button onclick=NumPressed(1) type=button value=" 1 " name=btnOne> </TD>
    <TD width=50><INPUT class=Button onclick=NumPressed(2) type=button value=" 2 " name=btnTwo> </TD>
    <TD width=50><INPUT class=Button onclick=NumPressed(3) type=button value=" 3 " name=btnThree> </TD>
    <TD width=50><INPUT class=Button onclick=binchange() type=button value=BIN name=btnClearEntry223> </TD>
    <TD width=0></TD>
    <TD align=middle width=50><INPUT class=Button onclick="Operation('*')" type=button value=" * " name=btnMultiply> </TD>
    <TD align=middle><INPUT class=Button onclick="Operation('/')" type=button value=" / " name=btnDivide> </TD></TR>
    <TR>
    <TD width=50><INPUT class=Button onclick=NumPressed(0) type=button value=" 0 " name=btnZero> </TD>
    <TD width=50><INPUT class=Button onclick=Decimal() type=button value=" . " name=btnDecimal> </TD>
    <TD colSpan=5><INPUT class=Button onclick="Operation('=')" type=button value=" = " name=btnEquals> </TD></TR></TBODY></TABLE></DIV></FORM>
    <SCRIPT language=JavaScript>
    var FKeyPad = document.Keypad;
    var Accum = 0;
    var FlagNewNum = false;
    var PendingOp = "";
    function NumPressed (Num) {
    if (FlagNewNum) {
    FKeyPad.ReadOut.value = Num;
    FlagNewNum = false;
    }
    else {
    if (FKeyPad.ReadOut.value == "0")
    FKeyPad.ReadOut.value = Num;
    else
    FKeyPad.ReadOut.value += Num;
    }
    }
    function Operation (Op) {
    var Readout = FKeyPad.ReadOut.value;
    if (FlagNewNum && PendingOp != "=");
    else
    {
    FlagNewNum = true;
    if ( '+' == PendingOp )
    Accum += parseFloat(Readout);
    else if ( '-' == PendingOp )
    Accum -= parseFloat(Readout);
    else if ( '/' == PendingOp )
    Accum /= parseFloat(Readout);
    else if ( '*' == PendingOp )
    Accum *= parseFloat(Readout);
    else
    Accum = parseFloat(Readout);
    FKeyPad.ReadOut.value = Accum;
    PendingOp = Op;
    }
    }
    function Decimal () {
    var curReadOut = FKeyPad.ReadOut.value;
    if (FlagNewNum) {
    curReadOut = "0.";
    FlagNewNum = false;
    }
    else
    {
    if (curReadOut.indexOf(".") == -1)
    curReadOut += ".";
    }
    FKeyPad.ReadOut.value = curReadOut;
    }
    function ClearEntry () {
    FKeyPad.ReadOut.value = "0";
    FlagNewNum = true;
    }
    function Clear () {
    Accum = 0;
    PendingOp = "";
    ClearEntry();
    }
    function Neg () {
    FKeyPad.ReadOut.value = parseFloat(FKeyPad.ReadOut.value) * -1;
    }
    function Percent () {
    FKeyPad.ReadOut.value = (parseFloat(FKeyPad.ReadOut.value) / 100) * parseFloat(Accum);
    }
    function hexchange()
    {
    var hex,dec;
    dec = parseFloat(FKeyPad.ReadOut.value);
    hex = dec.toString(16);
    window.alert("该十进制数转成十六进制数为："+ hex);
    }
    function octchange()
    {
    var oct,dec;
    dec = parseFloat(FKeyPad.ReadOut.value);
    oct = dec.toString(8);
    window.alert("该十进制数转成八进制数为："+ oct);
    }
    function binchange()
    {
    var bin,dec;
    dec = parseFloat(FKeyPad.ReadOut.value);
    bin = dec.toString(2);
    window.alert("该十进制数转成二进制数为："+ bin);
    }
    </SCRIPT>

    </body>
    </html>
    温馨提示：内容为网友见解，仅供参考
    其他看法
    第1个回答  2007-01-15
    一款用js编写的通用科学计算器
    新建文本文档,把下面代码粘贴过去,然后把TXT改成html就OK了

    代码太长了,给你地址,你自己复制吧.
    http://bbs.blueidea.com/archiver/tid-2510043.html

    测试过了,可以用

    可以转换进制
    第2个回答  2007-01-15
    <html>
    <head>
    <title></title>
    <SCRIPT LANGUAGE="javascript">
    </SCRIPT>
    </head>
    <body>
    <FORM name=Keypad action="">
    <CENTER>提示：先输入要转换的数,点击相关按钮进行转换。<BR>HEX:将十进制转十六进制 <BR>OCT:将十进制转八进制<BR>BIN:将十进制转二进制 </CENTER>
    <DIV align=center>
    <TABLE height=60 cellSpacing=0 cellPadding=0 width=249 align=center bgColor=#d4d0c8 border=1>
    <TBODY>
    <TR>
    <TD align=middle colSpan=4>
    <P align=center><INPUT class=text_input size=30 value=0 name=ReadOut width="100%"> </P></TD>
    <TD width=0></TD>
    <TD width=50><INPUT class=Button onclick=Clear() type=button value=" C " name=btnClear> </TD>
    <TD><INPUT class=Button onclick=ClearEntry() type=button value=" CE " name=btnClearEntry2> </TD></TR>
    <TR>
    <TD width=50><INPUT class=Button onclick=NumPressed(7) type=button value=" 7 " name=btnSeven> </TD>
    <TD width=50><INPUT class=Button onclick=NumPressed(8) type=button value=" 8 " name=btnEight> </TD>
    <TD width=50><INPUT class=Button onclick=NumPressed(9) type=button value=" 9 " name=btnNine> </TD>
    <TD width=50><INPUT class=Button onclick=hexchange() type=button value=HEX name=btnHex> </TD>
    <TD width=0></TD>
    <TD width=50><INPUT class=Button onclick=Neg() type=button value=" +/- " name=btnNeg> </TD>
    <TD><INPUT class=Button onclick=Percent() type=button value=" % " name=btnPercent> </TD></TR>
    <TR>
    <TD width=50><INPUT class=Button onclick=NumPressed(4) type=button value=" 4 " name=btnFour> </TD>
    <TD width=50><INPUT class=Button onclick=NumPressed(5) type=button value=" 5 " name=btnFive> </TD>
    <TD width=50><INPUT class=Button onclick=NumPressed(6) type=button value=" 6 " name=btnSix> </TD>
    <TD width=50><INPUT class=Button onclick=octchange() type=button value=OCT name=btnClearEntry222> </TD>
    <TD width=0></TD>
    <TD align=middle width=50><INPUT class=Button onclick="Operation('+')" type=button value=" + " name=btnPlus> </TD>
    <TD align=middle><INPUT class=Button onclick="Operation('-')" type=button value=" - " name=btnMinus> </TD></TR>
    <TR>
    <TD width=50><INPUT class=Button onclick=NumPressed(1) type=button value=" 1 " name=btnOne> </TD>
    <TD width=50><INPUT class=Button onclick=NumPressed(2) type=button value=" 2 " name=btnTwo> </TD>
    <TD width=50><INPUT class=Button onclick=NumPressed(3) type=button value=" 3 " name=btnThree> </TD>
    <TD width=50><INPUT class=Button onclick=binchange() type=button value=BIN name=btnClearEntry223> </TD>
    <TD width=0></TD>
    <TD align=middle width=50><INPUT class=Button onclick="Operation('*')" type=button value=" * " name=btnMultiply> </TD>
    <TD align=middle><INPUT class=Button onclick="Operation('/')" type=button value=" / " name=btnDivide> </TD></TR>
    <TR>
    <TD width=50><INPUT class=Button onclick=NumPressed(0) type=button value=" 0 " name=btnZero> </TD>
    <TD width=50><INPUT class=Button onclick=Decimal() type=button value=" . " name=btnDecimal> </TD>
    <TD colSpan=5><INPUT class=Button onclick="Operation('=')" type=button value=" = " name=btnEquals> </TD></TR></TBODY></TABLE></DIV></FORM>
    <SCRIPT language=JavaScript>
    var FKeyPad = document.Keypad;
    var Accum = 0;
    var FlagNewNum = false;
    var PendingOp = "";
    function NumPressed (Num) {
    if (FlagNewNum) {
    FKeyPad.ReadOut.value = Num;
    FlagNewNum = false;
    }
    else {
    if (FKeyPad.ReadOut.value == "0")
    FKeyPad.ReadOut.value = Num;
    else
    FKeyPad.ReadOut.value += Num;
    }
    }
    function Operation (Op) {
    var Readout = FKeyPad.ReadOut.value;
    if (FlagNewNum && PendingOp != "=");
    else
    {
    FlagNewNum = true;
    if ( '+' == PendingOp )
    Accum += parseFloat(Readout);
    else if ( '-' == PendingOp )
    Accum -= parseFloat(Readout);
    else if ( '/' == PendingOp )
    Accum /= parseFloat(Readout);
    else if ( '*' == PendingOp )
    Accum *= parseFloat(Readout);
    else
    Accum = parseFloat(Readout);
    FKeyPad.ReadOut.value = Accum;
    PendingOp = Op;
    }
    }
    function Decimal () {
    var curReadOut = FKeyPad.ReadOut.value;
    if (FlagNewNum) {
    curReadOut = "0.";
    FlagNewNum = false;
    }
    else
    {
    if (curReadOut.indexOf(".") == -1)
    curReadOut += ".";
    }
    FKeyPad.ReadOut.value = curReadOut;
    }
    function ClearEntry () {
    FKeyPad.ReadOut.value = "0";
    FlagNewNum = true;
    }
    function Clear () {
    Accum = 0;
    PendingOp = "";
    ClearEntry();
    }
    function Neg () {
    FKeyPad.ReadOut.value = parseFloat(FKeyPad.ReadOut.value) * -1;
    }
    function Percent () {
    FKeyPad.ReadOut.value = (parseFloat(FKeyPad.ReadOut.value) / 100) * parseFloat(Accum);
    }
    function hexchange()
    {
    var hex,dec;
    dec = parseFloat(FKeyPad.ReadOut.value);
    hex = dec.toString(16);
    window.alert("该十进制数转成十六进制数为："+ hex);
    }
    function octchange()
    {
    var oct,dec;
    dec = parseFloat(FKeyPad.ReadOut.value);
    oct = dec.toString(8);
    window.alert("该十进制数转成八进制数为："+ oct);
    }
    function binchange()
    {
    var bin,dec;
    dec = parseFloat(FKeyPad.ReadOut.value);
    </SCRIPT>

    </body>
    </html>
    就可以了

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