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Javascript Sqrt help

howlingmadpanda
in Computer Science

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I understand the rest of the Calculator and I know HTML + CSS, but I have no idea how to add a sqrt button, can anybody help the code is below the line where I tried is in red:
<!DOCTYPE html>
<html>
<head>
<style type="text/css">
input {text-align:center;}
table {text-align:center;position:absolute;left:550px;top:150px;}
body {background-color:black;}
</style>
</head>
<body>
<FORM NAME="Calc">
<TABLE BORDER=4>
<TR>
<TD>
<INPUT TYPE="text" NAME="Input" Size="16">
<br>
</td>
</tr>
<TR>
<TD>
<INPUT TYPE="button" NAME="one" VALUE=" 1 " OnClick="Calc.Input.value += '1'">
<INPUT TYPE="button" NAME="two" VALUE=" 2 " OnCLick="Calc.Input.value += '2'">
<INPUT TYPE="button" NAME="three" VALUE=" 3 " OnClick="Calc.Input.value += '3'">
<INPUT TYPE="button" NAME="plus" VALUE=" + " OnClick="Calc.Input.value += ' + '">
<br>
<INPUT TYPE="button" NAME="four" VALUE=" 4 " OnClick="Calc.Input.value += '4'">
<INPUT TYPE="button" NAME="five" VALUE=" 5 " OnCLick="Calc.Input.value += '5'">
<INPUT TYPE="button" NAME="six" VALUE=" 6 " OnClick="Calc.Input.value += '6'">
<INPUT TYPE="button" NAME="minus" VALUE=" - " OnClick="Calc.Input.value += ' - '">
<br>
<INPUT TYPE="button" NAME="seven" VALUE=" 7 " OnClick="Calc.Input.value += '7'">
<INPUT TYPE="button" NAME="eight" VALUE=" 8 " OnCLick="Calc.Input.value += '8'">
<INPUT TYPE="button" NAME="nine" VALUE=" 9 " OnClick="Calc.Input.value += '9'">
<INPUT TYPE="button" NAME="times" VALUE=" x " OnClick="Calc.Input.value += ' * '">
<br>
<INPUT TYPE="button" NAME="clear" VALUE=" c " OnClick="Calc.Input.value = ''">
<INPUT TYPE="button" NAME="zero" VALUE=" 0 " OnClick="Calc.Input.value += '0'">
<INPUT TYPE="button" NAME="Enter" VALUE=" = " OnClick="Calc.Input.value = eval(Calc.Input.value)">
<INPUT TYPE="button" NAME="div" VALUE=" / " OnClick="Calc.Input.value += ' / '">
<br>
<input type="button" name="sqrt" value="sqrt" OnClick="Calc.input.value += 'sqrt'">
</td>
</tr>
</table>
</form>
</p>
</body>
</html>


Also, I am well aware of the math.sqrt(x) function

No one has responded to your post in several hours. I am unsure whether I can help, but will try.

 

Are you asking how to get a square root symbol displayed by HTML?

  • Author

Not at all, I need to use the function in a table, and in a button. But, that would be nice to know how to add it....

Edited by howlingmadpanda

You could, for a start, ask yourself why you expect taking the square root to be expressed with a "+=". The "+=", as you may notice, is mainly used in cases where a new digit is attached to the end of your input (which is not what taking a square root does). Hint: Have a closer look at "clear" and "enter".

  • Author

I know, I understand the Calculator and the square root function, I need a function that I can use for Onclick=function() and use the square root I have already tried several

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