كود الالة الحاسبة الالكترونية

<SCRIPT>
function compute(obj)
   {obj.expr.value = eval(obj.expr.value)}
var one = '1'
var two = '2'
var three = '3'
var four = '4'
var five = '5'
var six = '6'
var seven = '7'
var eight = '8'
var nine = '9'
var zero = '0'
var plus = '+'
var minus = '-'
var multiply = '*'
var divide = '/'
var decimal = '.'
function enter(obj, string)
   {obj.expr.value += string}
function clear(obj)
   {obj.expr.value = ''}
                      </SCRIPT>
                      <FONT COLOR="#CC0000" face="Arial"><P><B>الألة الحاسبة
                        الإلكترونية</B></P></FONT>
                        <FORM name="calc">
                        <DIV align="center">
                      <TABLE border="1" bgcolor="#0033CC">
                          <TR>
                            <TD colSpan="4"><INPUT size=30
                              name=expr action="compute(this.form)"></TD></TR>
                          <TR>
                            <TD bgColor="#000033">
                             
 <P><INPUT onclick="enter(this.form, seven)" type=button
value="  7  "></P></TD>
                            <TD bgColor="#000033">
                             
 <P><INPUT onclick="enter(this.form, eight)" type=button
value="  8  "></P></TD>
                            <TD bgColor="#000033">
                             
 <P><INPUT onclick="enter(this.form, nine)" type=button
value="  9  "></P></TD>
                            <TD bgColor="#000033">
                             
 <P><INPUT onclick="enter(this.form, divide)" type=button
value="   /  "></P></TD></TR>
                          <TR>
                            <TD bgColor="#000033">
                             
 <P><INPUT onclick="enter(this.form, four)" type=button
value="  4  "></P></TD>
                            <TD bgColor="#000033">
                             
 <P><INPUT onclick="enter(this.form, five)" type=button
value="  5  "></P></TD>
                            <TD bgColor="#000033">
                             
 <P><INPUT onclick="enter(this.form, six)" type=button value=" 
 6  "></P></TD>
                            <TD bgColor="#000033">
                             
 <P><INPUT onclick="enter(this.form, multiply)" type=button
value="  *  "></P></TD></TR>
                          <TR>
                            <TD bgColor="#000033">
                             
 <P><INPUT onclick="enter(this.form, one)" type=button value=" 
 1  "></P></TD>
                            <TD bgColor="#000033">
                             
 <P><INPUT onclick="enter(this.form, two)" type=button value=" 
 2  "></P></TD>
                            <TD bgColor="#000033">
                             
 <P><INPUT onclick="enter(this.form, three)" type=button
value="  3  "></P></TD>
                            <TD bgColor="#000033">
                             
 <P><INPUT onclick="enter(this.form, minus)" type=button
value="   -  "></P></TD></TR>
                          <TR>
                            <TD bgColor="#000033" colSpan=2>
                             
 <P><INPUT onclick="enter(this.form, zero)" type=button
value="       0       "></P></TD>
                            <TD bgColor="#000033">
                             
 <P><INPUT onclick="enter(this.form, decimal)" type=button
value="   .  "></P></TD>
                            <TD bgColor="#000033">
                             
 <P><INPUT onclick="enter(this.form, plus)" type=button
value="  +  "></P></TD></TR>
                          <TR>
                            <TD bgColor="#000033" colSpan=2>
                              <P><INPUT onclick=compute(this.form) type=button value="   =   "></P></TD>
                            <TD bgColor="#000033" colSpan=2>
                              <P><INPUT onclick=clear(this.form) type=reset value=AC>
                              </P></TD></TR></TABLE></DIV></FORM>
                              <P align="center">
                              <FONT face="Courier , New tahoma , erdana, arial, helveticav" size="2"
                             
 color="#0000FF"><B><A target="_blank"
href="http://www.star28.com" style="TEXT-DECORATION: NONE">BY
STAR28.com</A></B></FONT></P>