Javascript Scientific Calculator

This javascript scientific calculator is used to perform mathematical operations like sin,cos,tan,log,exp,square,squareroot.You can use this calculator to make calculations.

Features

You can do mathematical operations using this calculator.
This calculator is also used to find log, exp, sin, cos, tan operations and for other basic calculations.
This is free javascript calculator.

Preview

Scientific-Calculator

Downloads

<script type="text/javascript">
var temp;
function w_onload()
{frm.txt.value=0;
}
function addchar(input,character)
{
if(input.value == null || input.value == "0")input.value = characterelseinput.value += character
}
function cancel_click()
{frm.txt.value=0;
}
function sin_click(obj)
{if(obj=='sin')var result=frm.txt.value;if(document.frm.deg[0].checked){result=result*Math.PI/180;frm.txt.value=Math.sin(result).toFixed(2);}if(document.frm.deg[1].checked)frm.txt.value=Math.sin(result).toFixed(2);
}
function cos_click(obj)
{if(obj=='cos')var result=frm.txt.value;if(document.frm.deg[0].checked){result=result*Math.PI/180;frm.txt.value=Math.cos(result).toFixed(2);}if(document.frm.deg[1].checked)frm.txt.value=Math.cos(frm.txt.value);
}
function tan_click(obj)
{if(obj=='tan')var result=frm.txt.value;if(document.frm.deg[0].checked){result=result*Math.PI/180;frm.txt.value=Math.tan(result).toFixed(2);}if(document.frm.deg[1].checked)frm.txt.value=Math.tan(frm.txt.value);
}
function resi_click()
{temp= frm.txt.value;frm.txt.value=1/temp;
}
function log_click()
{frm.txt.value=Math.log(frm.txt.value)/Math.LN10;
}
function sqr_click()
{temp=frm.txt.value;frm.txt.value=temp*temp;
}
function sqrt_click()
{frm.txt.value=Math.sqrt(frm.txt.value);
}
function equal_click()
{frm.txt.value=eval(frm.txt.value);
}
function exp_click()
{frm.txt.value=Math.exp(frm.txt.value);
}
function fac_click()
{var f=1;var i;var n=parseInt(frm.txt.value);for(i=1;i<=n;i++){f=f*i;}frm.txt.value=f;
}
function bks_click()
{var s;s=frm.txt.value;if(s>=1){var b=s.substr(0,s.length-1);frm.txt.value=b;}
}
function sign_click()
{if(isNaN(frm.txt.value)==false){if(frm.txt.value>0){ frm.txt.value=frm.txt.value*-1}else if(frm.txt.value<0){ frm.txt.value=frm.txt.value.replace('-','')}}
}
function ln_click()
{frm.txt.value=Math.log(frm.txt.value);
}
function lb_click()
{frm.txt.value=Math.log(frm.txt.value)/Math.LN2;
}
</script><body onload="w_onload()">
<form name="frm" action="">
<center>
<table style="border:solid green 1px">
<tr>
<td>
<input type="text" maxlength="10" name="txt" size="31"><br>
</td>
</tr>
<tr>
<td>
<font size=1.5px><input type="radio" name=deg value="Degree">Degrees</input>
<input type="radio" name=deg
value="Radian" checked>Radians</input>
<a style="text-decoration:none;" href="https://www.hscripts.com"> H</a></font>
</td></tr>
<tr>
<td>
<input type="button" name="sqr" value="sqr" style="width:30px;height:32px" onclick="sqr_click()">
<input type="button" name="sqt" value="sqt" style="width:30px;height:32px" onclick="sqrt_click()">
<input type="button" name="exp" value="exp" style="width:30px;height:32px" onclick="exp_click()">
<input type="button" name="fac" value="x!" style="width:30px;height:32px" onclick="fac_click()">
<input type="button" name="bks" value="bks" style="width:30px;height:32px" onclick="bks_click()">
<input type="button" name="cancel" value="clr" style="width:30px;height:32px" onclick="cancel_click()">
</td></tr>
<tr>
<td>
<input type="button" name="one" value="1" style="width:30px;height:32px" onclick="addchar(this.form.txt,'1')">
<input type="button" name="two" value="2" style="width:30px;height:32px" onclick="addchar(this.form.txt,'2')">
<input type="button" name="three" value="3" style="width:30px;height:32px" onclick="addchar(this.form.txt,'3')">
<input type="button" name="add" value="+" style="width:30px;height:32px" onclick="addchar(this.form.txt,'+')">
<input type="button" name="sin" value="sin" style="width:30px;height:32px" onclick="sin_click('sin')">
<input type="button" name="log" value="log" style="width:30px;height:32px" onclick="log_click()">
</td></tr>
<tr>
<td>
<input type="button" name="four" value="4" style="width:30px;height:32px" onclick="addchar(this.form.txt,'4')">
<input type="button" name="five" value="5" style="width:30px;height:32px" onclick="addchar(this.form.txt,'5')">
<input type="button" name="six" value="6" style="width:30px;height:32px" onclick="addchar(this.form.txt,'6')">
<input type="button" name="sub" value="-" style="width:30px;height:32px" onclick="addchar(this.form.txt,'-')">
<input type="button" name="cos" value="cos" style="width:30px;height:32px" onclick="cos_click('cos')">
<input type="button" name="ln" value="ln" style="width:32px;height:32px" onclick="ln_click()">
</td></tr>
<tr>
<td>
<input type="button" name="seven" value="7" style="width:30px;height:32px" onclick="addchar(this.form.txt,'7')">
<input type="button" name="eight" value="8" style="width:30px;height:32px" onclick="addchar(this.form.txt,'8')">
<input type="button" name="nine" value="9" style="width:30px;height:32px" onclick="addchar(this.form.txt,'9')">
<input type="button" name="mul" value="*" style="width:30px;height:32px" onclick="addchar(this.form.txt,'*')">
<input type="button" name="tan" value="tan" style="width:30px;height=32px" onclick="tan_click('tan')">
<input type="button" name="lb" value="lb" style="width:30px;height:32px" onclick="lb_click()">
</td></tr>
<tr>
<td>
<input type="button" name="zero" value="0" style="width:30px;height:32px" onclick="addchar(this.form.txt,'0')">
<input type="button" name="dot" value="." style="width:30px;height:32px" onclick="addchar(this.form.txt,'.')">
<input type="button" name="equal" value="=" style="width:30px;height:32px" onclick="equal_click()">
<input type="button" name="div" value="/" style="width:30px;height:32px" onclick="addchar(this.form.txt,'/')">
<input type="button" name="sign" value="+/-" style="width:30px;height:32px" onclick="sign_click()">
<input type="button" name="resi" value="1/x" style="width:30px;height:32px" onclick="resi_click()">
</td></tr>
</table>
</center>
</form>
</body>

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Usage

This is free scientific calculator.
By using this you can perform mathematical operations.
Just copy the above code and use it in your web page.
Make sure that you can use the calc-func() page properly.

License

The javascript (misspelled as java script) is given under GPL License.
i.e. Free use for those who use it as it is.
Free, if your modification does not remove our copyright information and links.
Detailed License information can be found here.
You can purchase the script if your requirements does not meet GPL License terms.