Phiên bản đầy đủ: jsB@nk » Tính toán » Máy tính » Máy tính đa năng
URL: https://www.javascriptbank.com/16-function-scientific-calculator.html
Một đoạn mã JavaScript khác để tạo một máy tính đa năng trên trang web.
Phiên bản đầy đủ: jsB@nk » Tính toán » Máy tính » Máy tính đa năng
URL: https://www.javascriptbank.com/16-function-scientific-calculator.html
<style>input {width: 100%;font-size: medium;}body {font-family: Verdana, Arial, Helvetica, sans-serif;font-size: x-small;margin: 0px;padding: 0px;}h1 {font-size: medium;font-weight: bold;}td {text-align: center;vertical-align: middle;}.table {margin: 1px;border: thick solid #00000;}</style><!-- This script downloaded from www.JavaScriptBank.com Come to view and download over 2000+ free javascript at www.JavaScriptBank.com--><script language="JavaScript">// Denis Makarov , [email protected] Result=0, Operator=0, Second=0, Ready=0, Done=1, Complete=0, Integer, CurrentValue;function reset(value){document.calculator.LED.value = value;Result = 0, Operator = 0, Second = 0, Ready = 0; Done = 1; Complete = 0;}function SetValue(NewValue){Integer = 1;if(Second || Done){Second = 0;Done = 0;CurrentValue = NewValue;}for(var i=0; i<CurrentValue.length; i++)if (CurrentValue[i]=='.')Integer=0;}function Click(Caption){CurrentValue = document.calculator.LED.value;if(Caption=='.'){SetValue('0');if(Integer){CurrentValue += Caption;document.calculator.LED.value = CurrentValue;Complete = 0;}}if (Caption.length == 1 && Caption>='0' && Caption<='9'){SetValue('');if(CurrentValue=='0')CurrentValue='';CurrentValue += Caption;document.calculator.LED.value = CurrentValue;Complete = 1;}if (Caption=='pi'){CurrentValue = Math.PI;document.calculator.LED.value = CurrentValue;Complete = 1;}if (Caption=='e'){CurrentValue = Math.E;document.calculator.LED.value = CurrentValue;Complete = 1;}if(Caption=='-' || Caption=='+' || Caption=='/' || Caption=='*' || Caption=='^'){if(Second)Operator = Captionelse{if(!Ready){Operator = Caption;Result = CurrentValue;Ready=1;} else{if (Operator=='^')Result = Math.pow(Result, CurrentValue);elseResult = eval(Result + Operator + CurrentValue);Operator = Caption; document.calculator.LED.value = Result;} Complete=0; Second = 1;}}if(Caption=='1/x' ){Result = eval('1/' + CurrentValue) ; reset(Result);}if(Caption=='sqrt'){Result = Math.sqrt(CurrentValue);reset(Result);}if(Caption=='exp' ){Result = Math.exp(CurrentValue);reset(Result);}if(Caption=='log' ){Result = Math.log(CurrentValue) / Math.LN10;reset(Result);}if(Caption=='ln' ){Result = Math.log(CurrentValue);reset(Result);}if(Caption=='sin' ){Result = CurrentValue;if (document.calculator.angle[0].checked)Result = Result * Math.PI / 180;if (document.calculator.angle[2].checked)Result = Result * Math.PI / 200;Result = Math.sin(Result);reset(Result);}if(Caption=='cos' ){Result = CurrentValue;if (document.calculator.angle[0].checked)Result = Result * Math.PI / 180;if (document.calculator.angle[2].checked)Result = Result * Math.PI / 200;Result = Math.cos(Result);reset(Result);}if(Caption=='tan' ){Result = CurrentValue;if (document.calculator.angle[0].checked)Result = Result * Math.PI / 180;if (document.calculator.angle[2].checked)Result = Result * Math.PI / 200;Result = Math.tan(Result);reset(Result);}if(Caption=='asin' ){Result = Math.asin(CurrentValue);if (document.calculator.angle[0].checked)Result = Result * 180 / Math.PI;if (document.calculator.angle[2].checked)Result = Result * 200 / Math.PI;reset(Result);}if(Caption=='acos' ){Result = Math.acos(CurrentValue);if (document.calculator.angle[0].checked)Result = Result * 180 / Math.PI;if (document.calculator.angle[2].checked)Result = Result * 200 / Math.PI;reset(Result);}if(Caption=='atan' ){Result = Math.atan(CurrentValue);if (document.calculator.angle[0].checked)Result = Result * 180 / Math.PI;if (document.calculator.angle[2].checked)Result = Result * 200 / Math.PI;reset(Result);}if(Caption=='sinh' ){Result = Math.exp(CurrentValue);Result = (Result - 1 / Result) / 2;reset(Result);}if(Caption=='cosh' ){Result = Math.exp(CurrentValue);Result = (Result + 1 / Result) / 2;reset(Result);}if(Caption=='tanh' ){Result = Math.exp(CurrentValue);Result = (Result - 1 / Result) / (Result + 1 / Result);reset(Result);}if(Caption=='asinh' ){//sign(x) * log(|x| + sqrt(x*x+1))//alert(CurrentValue + Math.sqrt(CurrentValue * CurrentValue + 1));//Result = Math.log(CurrentValue + Math.sqrt(CurrentValue * CurrentValue + 1));Result = CurrentValue / Math.abs(CurrentValue) * Math.log(Math.abs(CurrentValue) + Math.sqrt(CurrentValue * CurrentValue + 1));reset(Result);}if(Caption=='acosh' ){//2 log (sqrt((x+1)/2) + sqrt((x-1)/2)) Result = 2 * Math.log(Math.sqrt((CurrentValue + 1) / 2) + Math.sqrt((CurrentValue - 1) / 2));reset(Result);}if(Caption=='atanh' ){//0.5*log((x-1)/(x+1))Result = Math.log((CurrentValue - 1) / (CurrentValue + 1)) / 2;reset(Result);}if(Caption=='+/-')document.calculator.LED.value = eval(-CurrentValue);if(Caption=='=' && Complete && Operator!='0'){if (Operator=='^'){Result = Math.pow(Result, CurrentValue);reset(Result);} elsereset(eval(Result + Operator + CurrentValue));}if (Caption=='C')reset(0);if(document.calculator.LED.value[0] == '.')document.calculator.LED.value = '0' + document.calculator.LED.value;}</script><!-- This script downloaded from www.JavaScriptBank.com Come to view and download over 2000+ free javascript at www.JavaScriptBank.com--><form name="calculator"> <table class=table width="360" height="240" border="0" align="center" cellpadding="2" cellspacing="0"> <tbody><tr> <td colspan="4"> <input name="LED" type="text" value="0" size="20"> </td> <td><input type="button" name="C" value="C" onclick="Click('C')"></td> <td width="60"><input name="=" type="button" id="=2" value="=" onclick="Click('=')"> </td> </tr> <tr> <td colspan="2"> <input name="angle" type="radio" checked="checked"> Degrees</td> <td colspan="2"> <input name="angle" type="radio"> Radians</td> <td colspan="2"> <input name="angle" type="radio"> Gradients</td> </tr> <tr> <td width="60"> <input name="sin" type="button" id="sin" value="sin" onclick="Click('sin')"></td> <td width="60"> <input name="cos" type="button" id="cos" value="cos" onclick="Click('cos')"></td> <td width="60"> <input name="tab" type="button" id="tab" value="tan" onclick="Click('tan')"></td> <td width="60"> <input name="sinh" type="button" id="sinh" value="sinh" onclick="Click('sinh')"></td> <td width="60"> <input name="cosh" type="button" id="cosh" value="cosh" onclick="Click('cosh')"></td> <td width="60"> <input name="tanh" type="button" id="tanh" value="tanh" onclick="Click('tanh')"></td> </tr> <tr> <td width="60"> <input name="asin" type="button" id="asin" value="asin" onclick="Click('asin')"></td> <td width="60"> <input name="acos" type="button" id="acos" value="acos" onclick="Click('acos')"></td> <td width="60"> <input name="atan" type="button" id="atan" value="atan" onclick="Click('atan')"></td> <td width="60"> <input name="asinh" type="button" id="asinh" value="asinh" onclick="Click('asinh')"> </td> <td width="60"> <input name="acosh" type="button" id="acosh" value="acosh" onclick="Click('acosh')"> </td> <td width="60"> <input name="atanh" type="button" id="atanh" value="atanh" onclick="Click('atanh')"></td> </tr> <tr> <td width="60"><input name="exp" type="button" id="exp" value="exp" onclick="Click('exp')"> </td> <td width="60"><input name="7" type="button" id="7" value="7" onclick="Click('7')"> </td> <td width="60"><input name="8" type="button" id="8" value="8" onclick="Click('8')"> </td> <td width="60"><input name="9" type="button" id="9" value="9" onclick="Click('9')"> </td> <td width="60"><input name="+" type="button" id="+" value="+" onclick="Click('+')"> </td> <td width="60"><input name="^" type="button" id="^" value="^" onclick="Click('^')"> </td> </tr> <tr> <td width="60"><input name="log" type="button" id="log" value="log" onclick="Click('log')"> </td> <td width="60"><input name="4" type="button" id="4" value="4" onclick="Click('4')"> </td> <td width="60"><input name="5" type="button" id="5" value="5" onclick="Click('5')"> </td> <td width="60"><input name="6" type="button" id="6" value="6" onclick="Click('6')"></td> <td width="60"><input name="-" type="button" id="-" value="-" onclick="Click('-')"> </td> <td width="60"><input name="1/x" type="button" id="1/x2" value="1/x" onclick="Click('1/x')"> </td> </tr> <tr> <td width="60"><input name="ln" type="button" id="abs22" value="ln" onclick="Click('ln')"> </td> <td width="60"><input name="1" type="button" id="1" value="1" onclick="Click('1')"> </td> <td width="60"><input name="2" type="button" id="2" value="2" onclick="Click('2')"> </td> <td width="60"><input name="3" type="button" id="3" value="3" onclick="Click('3')"> </td> <td width="60"><input name="*" type="button" id="*" value="*" onclick="Click('*')"> </td> <td width="60"><input name="pi" type="button" id="pi3" value="pi" onclick="Click('pi')"> </td> </tr> <tr> <td width="60"><input name="sqrt" type="button" id="sqrt" value="sqrt" onclick="Click('sqrt')"> </td> <td width="60"><input name="0" type="button" id="0" value="0" onclick="Click('0')"> </td> <td width="60"><input name="." type="button" id="." value="." onclick="Click('.')"> </td> <td width="60"><input name="+/-" type="button" id="+/-2" value="+/-" onclick="Click('+/-')"> </td> <td width="60"><input name="/" type="button" id="/" value="/" onclick="Click('/')"> </td> <td width="60"><input name="e" type="button" id="pi4" value="e" onclick="Click('e')"> </td> </tr> </tbody></table></form><!-- This script downloaded from www.JavaScriptBank.com Come to view and download over 2000+ free javascript at www.JavaScriptBank.com-->