简易计算器

content=no-cache>

content=zh-cn>

//document.οnkeyup=function Fun(){alert(event.keyCode);}

function computetoedit(obj)

{

return eval_r(obj.expr.value)

}

function compute(obj)

{obj.expr.value =

eval_r(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}

FONT-SIZE: 9pt

}

a.value = computetoedit(this.form);

window.returnValue = a.value+"*"+b.value

window.close();

function IsDigit()

{

return ((event.keyCode >= 48)

&& (event.keyCode <=

57));

}

οncοntextmenu=window.event.returnValue=false>

border=1>

colSpan=4>

style="BORDER-RIGHT: #000000 1px inset; BORDER-TOP: #000000 1px

inset; FONT-SIZE: 18pt; BORDER-LEFT: #000000 1px inset; COLOR:

#ffff00; BORDER-BOTTOM: #000000 1px inset; BACKGROUND-COLOR:

#000000"

size=14 name=expr id=a action="compute(this.form)"

ONKEYPRESS="event.returnValue=IsDigit();">

οnclick="enter(this.form, seven)" type=button value=" 7

">

οnclick="enter(this.form, eight)" type=button value=" 8

">

οnclick="enter(this.form, nine)" type=button value=" 9

">

οnclick="enter(this.form, divide)" type=button value=" /

">

οnclick="enter(this.form, four)" type=button value=" 4

">

οnclick="enter(this.form, five)" type=button value=" 5

">

οnclick="enter(this.form, six)" type=button value=" 6

">

οnclick="enter(this.form, multiply)" type=button value=" *

">

οnclick="enter(this.form, one)" type=button value=" 1

">

οnclick="enter(this.form, two)" type=button value=" 2

">

οnclick="enter(this.form, three)" type=button value=" 3

">

οnclick="enter(this.form, minus)" type=button value=" -

">

οnclick="enter(this.form, decimal)" type=button value=" .

">

οnclick="enter(this.form, zero)" type=button value=" 0

">

type=reset size=3 value=" AC">

οnclick="enter(this.form, plus)" type=button value=" +

">

colSpan=4>

οnclick=compute(this.form) type=button

value=" =