admin-abzar
| ارسالها : | 23 |
| عضويت: | 30 /7 /1392 |
| مرورگر من | 
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پاسخ 11 : کد جاوا اسکرپیت و html
ماشین حساب حرفه ای
کد:
<head>
<script language="JavaScript">
function addChar(input, character) {
if(input.value== null || input.value== "0")
input.value= character
else
input.value += character
}
function cos(form) {
form.display.value= Math.cos(form.display.value);
}
function sin(form) {
form.display.value= Math.sin(form.display.value);
}
function tan(form) {
form.display.value= Math.tan(form.display.value);
}
function sqrt(form) {
form.display.value= Math.sqrt(form.display.value);
}
function ln(form) {
form.display.value= Math.log(form.display.value);
}
function exp(form) {
form.display.value= Math.exp(form.display.value);
}
function deleteChar(input) {
input.value= input.value.substring(0, input.value.length - 1)
}
function changeSign(input) {
if(input.value.substring(0, 1) == "-")
input.value= input.value.substring(1, input.value.length)
else
input.value= "-" + input.value
}
function compute(form) {
form.display.value= eval(form.display.value)
}
function square(form) {
form.display.value= eval(form.display.value) * eval(form.display.value)
}
function checkNum(str) {
for (var i = 0; i < str.length; i++) {
var ch = str.substring(i, i+1)
if (ch < "0" || ch > "9") {
if (ch != "/" && ch != "*" && ch != "+" && ch != "-" && ch != "."
&& ch != "(" && ch!= ")") {
alert("invalid entry!")
return false
}
}
}
return true
}
</SCRIPT>
<style type="text/css">
form#calculator,table#calculator td{
margin:0; padding:0
}
input.cal{width:50px !important; text-align:center; border:1px outset #bbb; background:#f5f5f5; height:23px; margin-top:1px}
input.back{width:154px !important; text-align:center; border:1px outset #bbb; background:#f5f5f5; height:23px; margin-top:1px}
input.view{width:246px
!important; background:#ffd; border:1px inset #999; height:21px;
padding:2px 5px; font:normal 12px verdana }
</style>
</head>
<body>
<form name="sci-calc">
<table border="0" cellpadding="0" cellspacing="0" id="calculator">
<tr>
<td colspan="5" align="center"><INPUT name="display" value="0" MAXLENGTH="25" class="view"></td>
</tr>
<tr>
<td
align="center"><input type="button" class="cal" value=" exp "
onClick="if (checkNum(this.form.display.value)) { exp(this.form)
}"></td>
<td align="center"><input type="button"
class="cal" value=" 7 " onClick="addChar(this.form.display,
'7')"></td>
<td align="center"><input type="button"
class="cal" value=" 8 " onClick="addChar(this.form.display,
'8')"></td>
<td align="center"><input type="button"
class="cal" value=" 9 " onClick="addChar(this.form.display,
'9')"></td>
<td align="center"><input type="button"
class="cal" value=" / " onClick="addChar(this.form.display,
'/')"></td>
</tr>
<tr>
<td
align="center"><input type="button" class="cal" value=" ln "
onClick="if (checkNum(this.form.display.value)) { ln(this.form)
}"></td>
<td align="center"><input type="button"
class="cal" value=" 4 " onClick="addChar(this.form.display,
'4')"></td>
<td align="center"><input type="button"
class="cal" value=" 5 " onClick="addChar(this.form.display,
'5')"></td>
<td align="center"><input type="button"
class="cal" value=" 6 " onClick="addChar(this.form.display,
'6')"></td>
<td align="center"><input type="button"
class="cal" value=" * " onClick="addChar(this.form.display,
'*')"></td>
</tr>
<tr>
<td
align="center"><input type="button" class="cal" value=" sqrt "
onClick="if (checkNum(this.form.display.value)) { sqrt(this.form)
}"></td>
<td align="center"><input type="button"
class="cal" value=" 1 " onClick="addChar(this.form.display,
'1')"></td>
<td align="center"><input type="button"
class="cal" value=" 2 " onClick="addChar(this.form.display,
'2')"></td>
<td align="center"><input type="button"
class="cal" value=" 3 " onClick="addChar(this.form.display,
'3')"></td>
<td align="center"><input name="button"
type="button" class="cal" onClick="addChar(this.form.display, '-')"
value=" - "></td>
</tr>
<tr>
<td
align="center"><input type="button" class="cal" value=" sq "
onClick="if (checkNum(this.form.display.value)) { square(this.form)
}"></td>
<td align="center"><input type="button"
class="cal" value=" 0 " onClick="addChar(this.form.display,
'0')"></td>
<td align="center"><input type="button"
class="cal" value=" . " onClick="addChar(this.form.display,
'.')"></td>
<td align="center"><input type="button"
class="cal" value=" +/- "
onClick="changeSign(this.form.display)"></td>
<td
align="center"><input type="button" class="cal" value=" + "
onClick="addChar(this.form.display, '+')"></td>
</tr>
<tr>
<td
align="center"><input type="button" class="cal" value=" ( "
onClick="addChar(this.form.display, '(')"></td>
<td
align="center"><input type="button" class="cal" value="cos"
onClick="if (checkNum(this.form.display.value)) { cos(this.form)
}"></td>
<td align="center"><input type="button"
class="cal" value=" sin" onClick="if (checkNum(this.form.display.value))
{ sin(this.form) }"></td>
<td
align="center"><input type="button" class="cal" value=" tan"
onClick="if (checkNum(this.form.display.value)) { tan(this.form)
}"></td>
<td align="center"><input type="button"
class="cal" value=" ) " onClick="addChar(this.form.display,
')')"></td>
</tr>
<tr>
<td align="center"><input type="button" class="cal" value="clear" onClick="this.form.display.value= 0 "></td>
<td
align="center" colspan="3"><input type="button" class="back"
value="backspace" onClick="deleteChar(this.form.display)"></td>
<td
align="center"><input type="button" class="cal" value="="
name="enter" onClick="if (checkNum(this.form.display.value)) {
compute(this.form) }"></td>
</tr>
</table>
</form>
</body>
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پنجشنبه 02 آبان 1392 - 00:37
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