| <SCRIPT LANGUAGE="JavaScript">
<!-- This script and many more are available free online at -->
<!-- The JavaScript Source!! http://javascript.internet.com -->
<!-- Begin
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 sqrt(form) {
form.display.value = Math.sqrt(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
}
// End -->
</SCRIPT>
<!-- STEP TWO: Copy this code into the BODY of your HTML document -->
</head>
<body>
<table width="100%" border="1">
<tr>
<td><div align="center">
<!-- TWO STEPS TO INSTALL YOUR SCIENTIFIC CALCULATOR:
1. Paste the designated coding into the HEAD of your HTML document
2. Put the last script into the BODY of your HTML document -->
<!-- STEP ONE: Copy this code into the HEAD of your HTML document -->
<CENTER>
<FORM>
<table width="50%" border="1">
<tr>
<td colspan="5"><div align="center"></div>
<div align="center">
<input name="display" value="0" size=40>
</div></td>
</tr>
<tr>
<td><div align="center">
<input name="button" type="button" onClick="if (checkNum(this.form.display.value)) {
exp(this.form) }" value=" exp ">
</div></td>
<td><div align="center">
<input name="button2" type="button" onClick="addChar(this.form.display, '7')" value=" 7 ">
</div></td>
<td><div align="center">
<input name="button3" type="button" onClick="addChar(this.form.display, '8')" value=" 8 ">
</div></td>
<td><div align="center">
<input name="button4" type="button" onClick="addChar(this.form.display, '9')" value=" 9 ">
</div></td>
<td><div align="center">
<input name="button5" type="button" onClick="addChar(this.form.display, '/')" value=" / ">
</div></td>
</tr>
<tr>
<td><div align="center">
<input name="button6" type="button" onClick="if (checkNum(this.form.display.value)) {
ln(this.form) }" value=" ln ">
</div></td>
<td><div align="center">
<input name="button7" type="button" onClick="addChar(this.form.display, '4')" value=" 4 ">
</div></td>
<td><div align="center">
<input name="button8" type="button" onClick="addChar(this.form.display, '5')" value=" 5 ">
</div></td>
<td><div align="center">
<input name="button9" type="button" onClick="addChar(this.form.display, '6')" value=" 6 ">
</div></td>
<td><div align="center">
<input name="button10" type="button" onClick="addChar(this.form.display, '*')" value=" * ">
</div></td>
</tr>
<tr>
<td><div align="center">
<input name="button11" type="button" onClick="if (checkNum(this.form.display.value)) {
sqrt(this.form) }" value=" sqrt ">
</div></td>
<td><div align="center">
<input name="button12" type="button" onClick="addChar(this.form.display, '1')" value=" 1 ">
</div></td>
<td><div align="center">
<input name="button13" type="button" onClick="addChar(this.form.display, '2')" value=" 2 ">
</div></td>
<td><div align="center">
<input name="button14" type="button" onClick="addChar(this.form.display, '3')" value=" 3 ">
</div></td>
<td><div align="center">
<input name="button15" type="button" onClick="addChar(this.form.display, '-')" value=" - ">
</div></td>
</tr>
<tr>
<td><div align="center">
<input name="button16" type="button" onClick="if (checkNum(this.form.display.value)) {
square(this.form) }" value=" sq ">
</div></td>
<td><div align="center">
<input name="button17" type="button" onClick="addChar(this.form.display, '0')" value=" 0 ">
</div></td>
<td><div align="center">
<input name="button18" type="button" onClick="addChar(this.form.display, '.')" value=" . ">
</div></td>
<td><div align="center">
<input name="button19" type="button" onClick="changeSign(this.form.display)" value=" +/- ">
</div></td>
<td><div align="center">
<input name="button20" type="button" onClick="addChar(this.form.display, '+')" value=" + ">
</div></td>
</tr>
<tr>
<td><div align="center">
<input name="button21" type="button" onClick="addChar(this.form.display, '(')" value=" ( ">
</div></td>
<td><div align="center">
<input name="button22" type="button" onClick="if (checkNum(this.form.display.value)) {
cos(this.form) }" value=" cos ">
</div></td>
<td><div align="center">
<input name="button23" type="button" onClick="if (checkNum(this.form.display.value)) {
sin(this.form) }" value=" sin ">
</div></td>
<td><div align="center">
<input name="button24" type="button" onClick="if (checkNum(this.form.display.value)) {
tan(this.form) }" value=" tan ">
</div></td>
<td><div align="center">
<input name="button25" type="button" onClick="addChar(this.form.display, ')')" value=" ) ">
</div></td>
</tr>
<tr>
<td><div align="center"></div></td>
<td><div align="center">
<input name="button26" type="button" onClick="this.form.display.value = 0 " value=" Clear ">
</div></td>
<td><div align="center">
<input name="button27" type="button" onClick="deleteChar(this.form.display)" value=" Back Space ">
</div></td>
<td><div align="center">
<input type="button" value=" Enter " name="enter"
onClick="if (checkNum(this.form.display.value)) {
compute(this.form) }">
</div></td>
<td><div align="center"></div></td>
</tr>
</table>
<br>
<br>
<br>
<br>
<br>
<br>
</FORM> | |
AJÁNLOM AZ OLDALT
