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HTML Calculator

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In this example we will learn how to make HTML Calculator. We have used HTML language in this example.

HTML Calculator

In this example we will learn how to make HTML Calculator. We have used HTML language in this example. First off all we have created one table and we create 10 Button 0 to 9. We have created mathematical button "+, -, / ,and = "and we have created one clear screen button "C". This calculator can be used to perform simple mathematical operations like addition, subtraction, multiplication and division. A programmer can add, multiply, divide and subtract up to 9 digits. Clear screen button helps you to clear the screen. Text button is used to display the numbers. style is used fix the font size and Onclick is used for the button.

Example

<form name="Calculator">
<table border="2" align="center" cellpadding="10" cellspacing="10" bgcolor="#00FFFF">
<tr>
<td>
<input type="text" name="Input" Size="30">
<br>
</td>
</tr>
<tr>
<td>
<input type="button" name="one" style="font-size:25px" value=" 1 " OnClick="Calculator.Input.value += '1'">
<input type="button" name="two" style="font-size:25px" value=" 2 " OnCLick="Calculator.Input.value += '2'">
<input type="button" name="three" style="font-size:25px" value=" 3 " OnClick="Calculator.Input.value += '3'">
<input type="button" name="add" style="font-size:25px" value=" + " OnClick="Calculator.Input.value += ' + '">
<br>
<input type="button" name="four" style="font-size:25px" value=" 4 " OnClick="Calculator.Input.value += '4'">
<input type="button" name="five" style="font-size:25px" value=" 5 " OnCLick="Calculator.Input.value += '5'">
<input type="button" name="six" style="font-size:25px" value=" 6 " OnClick="Calculator.Input.value += '6'">
<input type="button" name="minus" style="font-size:25px" value=" - " OnClick="Calculator.Input.value += ' - '">
<br>
<input type="button" name="seven" style="font-size:25px" value=" 7 " OnClick="Calculator.Input.value += '7'">
<input type="button" name="eight" style="font-size:25px" value=" 8 " OnCLick="Calculator.Input.value += '8'">
<input type="button" name="nine" style="font-size:25px" value=" 9 " OnClick="Calculator.Input.value += '9'">
<input type="button" name="mul" style="font-size:25px" value=" * " OnClick="Calculator.Input.value += ' * '">
<br>
<input type="button" name="clear" style="font-size:25px" value=" c " OnClick="Calculator.Input.value = ''">
<input type="button" name="zero" style="font-size:25px" value=" 0 " OnClick="Calculator.Input.value += '0'">
<input type="button" name="DoIt" style="font-size:25px" value=" = " OnClick="Calculator.Input.value = eval(Calculator.Input.value)">
<input type="button" name="div" style="font-size:25px" value=" / " OnClick="Calculator.Input.value += ' / '">
<br>
</td>
</tr>
</table>
</form>

OutPut:-

Download Source Code

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Posted on: July 4, 2013

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