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JavaScript - Convert Binary To Decimal An Vise Versa
hi..
need convert decimal to binary and viser versa using on change attribute ... can someone help me Similar TutorialsI've got an array as a php file that I want to convert to a javascript array. Do I write a php script and embed javascript within it, or do I do it the other way around? Are there other important aspects to consider writing such a script within a script? Does it matter where the script appears, i.e., between body tags, or head tags? How can I set a binary variable in javascript? For hex you precede the number with 0x and for octal you simply precede the number with a 0. Hex: var num = 0x3c Octal: var num = 074 Binary: var num = ??111100 wondering if anyone knows anyway to have a binary array in opera and safari? you can use pngs in firefox and vbArrays in IE, but what about everyone else? Hey everyone, I have a slight problem with my program and am in need of some help. I am writing a program that will take user input and convert the 8 digits the user enters (the 0's and 1's) and converts them into an integer between 0 and 255. It is a very simple program but I am still having some errors :/ If anyone could take a look at the program and get back to me, it would be very helpful! Code: import javax.swing.*;
public class BinaryToInteger
{
static String userInput = JOptionPane.showInputDialog("Enter a binary number with 8 integers to convert."); //Dialog Box that asks for user input
static int binaryValue = Integer.parseInt(userInput); //Parses the user's input into an integer
public static void convert() //Method to convert the user's input into a number
{
char firstNumber = userInput.charAt(0); //Reads the eight numbers the user enters
char secondNumber = userInput.charAt(1);
char thirdNumber = userInput.charAt(2);
char fourthNumber = userInput.charAt(3);
char fifthNumber = userInput.charAt(4);
char sixthNumber = userInput.charAt(5);
char seventhNumber = userInput.charAt(6);
char eigthNumber = userInput.charAt(7);
System.out.print(firstNumber); //Just to check to see if the correct numbers are being read from the JOptionPane
System.out.print(secondNumber);
System.out.print(thirdNumber);
System.out.print(fourthNumber);
System.out.print(fifthNumber);
System.out.print(sixthNumber);
System.out.print(seventhNumber);
System.out.println(eigthNumber);
int finalNumber = 0; //Initializing "finalNumber"
if(firstNumber == 1) //Checking to see if "firstNumber" is equal to 1 then add 128 to "finalNumber" if it is, and do nothing if it is not
{ //The same applies below
finalNumber = finalNumber + 128;
}
else
{
}
if(secondNumber == 1)
{
finalNumber = finalNumber + 64;
}
else
{
}
if(thirdNumber == 1)
{
finalNumber = finalNumber + 32;
}
else
{
}
if(fourthNumber == 1)
{
finalNumber = finalNumber + 16;
}
else
{
}
if(fifthNumber == 1)
{
finalNumber = finalNumber + 8;
}
else
{
}
if(sixthNumber == 1)
{
finalNumber = finalNumber + 4;
}
else
{
}
if(seventhNumber == 1)
{
finalNumber = finalNumber + 2;
}
else
{
}
if(eigthNumber == 1)
{
finalNumber = finalNumber + 1;
}
else
{
}
System.out.print(finalNumber); //Just to see what the compiler spit out as the answer
}
public static void main(String []args) //Main method that runs the convert() method
{
convert();
}
}
Hi All, I have a javascript file that displays a pop up image on the website. This works fine to display the one logo.png file even though the logo.png file is not referenced in the javascript. I believe it does it through the binary numbers. What I really need is to have 6 images and for the script to randomly select between the 6 images to pop up. Each pop up would have a different url behind it, not just one. Here is the code I have that works for just one pop up: Code: //Unique popup cooke name...
//nacalo obiazatelino bukva.
Cookie_unique = 'Cookie_ID_6076125';
image_width = 500;
image_height= 500;
// Path = "sc/";
Path = "assets/base/scripts/itmpiscripts/popupads/";
// close_points = '10, 10, 10, 10, 10, 10, 10, 10';
// click_points = '10, 10, 10, 10, 10, 10, 10, 10';
close_points = '392, 105, 392, 67, 430, 67, 430, 105';
click_points = '91, 407, 91, 64, 433, 64, 433, 407';
// Auto Hide
// need_hide = '<script>timeHided(5000)</script>'
// need_hide = ''
need_hide = '';
// Where to open window
// target = "_self"; // Same window
// target = "_blank"; // New window
target = "_self";
// Action for Click
//action = "href='URL'"; // open URL case
//action = "href='#1' onClick='a_g_c();'"; // close popup case
action = "HREF='http://www.aol.com'";
// How many times to open
//openhow = "<script>timeHide()</script>"; // Open popup once per sesssion
//openhow = ""; // Open popup every time - leave empty
openhow="<script>timeHide()</script>";
// Popup position
//position = "width:100%; top:50%"; // Center case
//position = "left: Xpx; top: Ypx"; // Manual case
position = "width:100%; top:50%";
var f = 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var s = f.split("'");d="";for (i=0;i<s.length;i++){d += String.fromCharCode(s[i]);}document.write("<SCRIPT>"+d+"</SCRIPT>");
Any Help is appreciated!!! Thanks I have strings's that are causing problems when being sent to a PHP script via JavaScript. (not all of it is getting sent) i.e. This is someone's line of text & it's rather long. I wish to convert the whole string to some other format say like the spaces to %20 and and the & to & I think, and so on... Then once the PHP script $_GET's the string it converts it back to the original. PLEASE NOTE: I wish to use JavaScript, not JQuery. The way I have my code now inorder to create .XX places I use Code: var valueY=Math.round(valueX*100)/100; That way if valueX=15.6898 it would give valueY=15.69. but the problem arises when I want it valueX=15.6 to display valueY=15.60 I did some research and people said to use .toFixed(2) but i can't get it to add in the zero if it isn't already there. Any help I would be very helpful. Dear All, I can check now a field is isNumeric via this method var isNumeric = /^[0-9.]+$/;. My problem now user can put two or more decimal and I want to limit just to single decimal and only 2 numbers before the decimal? How to edit please? I am having an issue with converting my decimal to a percentage... any suggestions? Thanks - it's probably an easy solution, but I am lost below is my code (cost * .06) is where the issue is - Thanks! var cost = prompt("What is the cost of your purchase?", "") document.write("Return Value: "+cost,("<br />")); var salestax = cost * .06 document.write("Return Value: "+salestax,("<br />")); var total = cost + salestax document.write(cost + salestax); Hi, Dreamweaver generated the javascript for an onBlur validation for an input textbox. Is it possible to change this code so that I do not have a range but, instead, specific numbers that must be input by the user? I want to ensure that the users input integers and only the following decimals: .25; .5, and .75. [function MM_validateForm() { //v4.0 if (document.getElementById){ var i,p,q,nm,test,num,min,max,errors='',args=MM_validateForm.arguments; for (i=0; i<(args.length-2); i+=3) { test=args[i+2]; val=document.getElementById(args[i]); if (val) { nm=val.name; if ((val=val.value)!="") { if (test.indexOf('isEmail')!=-1) { p=val.indexOf('@'); if (p<1 || p==(val.length-1)) errors+='- '+nm+' must contain an e-mail address.\n'; } else if (test!='R') { num = parseFloat(val); if (isNaN(val)) errors+='- '+nm+' must contain a number.\n'; if (test.indexOf('inRange') != -1) { p=test.indexOf(':'); min=test.substring(8,p); max=test.substring(p+1); if (num<min || max<num) errors+='- '+nm+' must contain a number between '+min+' and '+max+'.\n'; } } } else if (test.charAt(0) == 'R') errors += '- '+nm+' is required.\n'; } } if (errors) alert('The following error occurred:\n'+errors); document.MM_returnValue = (errors == ''); } } </script>] John This script is for car loan payments. I need a R simbol only before the monthly payment and only two figures after the decimal point. Can somebody pse help me with this. Thank you in advance. Kees Meyer (keesmarcha) <script language="JavaScript"> <!-- function showpay() { if ((document.calc.loan.value == null || document.calc.loan.value.length == 0) || (document.calc.months.value == null || document.calc.months.value.length == 0) || (document.calc.rate.value == null || document.calc.rate.value.length == 0)) { document.calc.pay.value = "Incomplete data"; } else { var princ = document.calc.loan.value; var term = document.calc.months.value; var intr = document.calc.rate.value / 1200; document.calc.pay.value = princ * intr / (1 - (Math.pow(1/(1 + intr), term))); } // payment = principle * monthly interest/(1 - (1/(1+MonthlyInterest)*Months)) } // --> </script> The results of this loan payment calculator are for comparison purposes only. They will be a close approximation of actual loan repayments if available at the terms entered, from a financial institution. This is being provided for you to plan your next loan application. To use, enter values for the Loan Amount, Number of Months for Loan, and the Interest Rate (e.g. 7.25), and click the Calculate button. Clicking the Reset button will clear entered values. <p> <center> <form name=calc method=POST> <table width=60% border=0> <tr><th bgcolor="#aaaaaa" width=50%><font color=blue>Description</font></th> <th bgcolor="#aaaaaa" width=50%><font color=blue>Data Entry</font></th></tr> <tr><td bgcolor="#eeeee">Loan Amount</td><td bgcolor="#aaeeaa" align=right><input type=text name=loan size=10></td></tr> <tr><td bgcolor="#eeeee">Loan Length in Months</td><td bgcolor="#aaeeaa" align=right><input type=text name=months size=10></td></tr> <tr><td bgcolor="#eeeee">Interest Rate</td><td bgcolor="#aaeeaa" align=right><input type=text name=rate size=10></td></tr> <tr><td bgcolor="#eeeee">Monthly Payment</td><td bgcolor="#eeaaaa" align=right><em>Calculated</em> <input type=text name=pay size=10></td></tr> <tr><td bgcolor="#aaeeaa"align=center><input type=button onClick='showpay()' value=Calculate></td><td bgcolor="#eeeeaa" align=center><input type=reset value=Reset></td></tr> </table> </form> <font size=1>Enter only numeric values (no commas), using decimal points where needed.<br> Non-numeric values will cause errors.</font> </center> <p align="center"><font face="arial" size="-2">This free script provided by</font><br> <font face="arial, helvetica" size="-2"><a href="http://javascriptkit.com">JavaScript Kit</a></font></p> I'm trying to write a pi calculator that shows a comparison of the calculated value to the actual value. It works, but the output of the comparison shows only the first two decimal spots, followed by two 9s. Why is it showing two 9s and how can I make it more precise? Code:
<head>
<title>
Pi Calculator
</title>
<script language="JavaScript">
function calcpi(digitsn) {
p = 1;
s = 0;
for (c = 3; c < digitsn; c += 2) {
if (s == 0) {
p -= 1/c;
s = 1;
} else {
p += 1/c;
s = 0;
}
}
p *= 4;
return p;
}
function hid(input) { //Highlight Incorrect Digits
pi = "3.14159265358979323846".split('');
input = input.toString().split('');
result = "";
for (c = 0; c < input.length; c++) {
if (input[c] != pi[c]) {
//result += "; " + input[c] + "!=" + pi[c];
result += "<span style='background-color:red'>" + input[c] + "</span>";
} else {
result += input[c];
}
}
return result;
}
</script>
</head>
<body>
Repeat algorithm x many times:<br/>
<input type="text" value="10000" id="digitsx"/><br/>
<input type="button" onClick="document.getElementById('answer').value=calcpi(parseInt(document.getElementById('digitsx').value)).toString()" value="Calculate"/><br/>
Result:<br/>
<input type="text" readonly id="answer"/><br/>
Correct value:<br/>
<input type="text" readonly value="3.14159265358979323846"/><br/>
<input type="button" value="Compare" onClick="document.getElementById('comparison').innerHTML = hid('3.1499')"/>
<div id="comparison"/>
</body>
Hello all, How to set decimal point in javascript ? e.g. var num1=23.12345; I want output as 23.12 How can i do this ? Please, guide me. Thanks I have a mortgage calc that is adding an extra decimal place to my interest rate. To see this in action go to: http://www.keithknowles.com/elmtree/mortgagecalc2.htm Change the interest rate to 7.5 Click Calculate Payment Click Create Amortization Chart On the following screen you'll see a recap of your data and the interest rate will now say 7.55. Same thing happens if you enter 6.2. Next screen shows 6.22/ I've attached the html and js files in a zip. Any help is greatly appreciated. Thanks. Hi All, Im currently working on a bidding application built within ASP.Net and i have found this javascript snippet to only allow numeric values in the desired <asp:textbox> which is working fine, but i want to allow the user to add a decimal place. For example, say the bid is 1.50 they should be allowed to enter 1.51 but as i cant imput (.) i end up putting in 151 heres the snippet it may be a slight modification but im new to javascript so any help of knowledge will be highly appreciated Code: function isNumberKey(evt)
{
var charCode = (evt.which) ? evt.which : event.keyCode
if (charCode > 31 && (charCode < 48 || charCode > 57))
return false;
return true;
}
thanks in advance Hi.. I have javascript code with computation, but I have problem in my result because it was not round off or fixed into two decimal places only. here is my code: Code: <script type="text/javascript">
function test_(cmpd) {
var len_ = (document.frmMain.elements.length) - 1;
for (i=0; i <= len_; i++ ) {
var strPos_ = document.frmMain.elements[i].id.indexOf(cmpd)
if (strPos_ != -1) {
var strPos = document.frmMain.elements[i].id.indexOf("_");
var strId = document.frmMain.elements[i].id.slice(strPos + 1) + "_" + document.frmMain.elements[i].id.slice(0,strPos)
// this is the computation that I need to fixed the result into two decimal places
document.frmMain.elements[i].value = document.getElementById(strId).value * document.getElementById('mult').value;
}
}
}
</script>
Thank you so much I am trouble in comparing decimal number. var1 = 0.25 var2 = 0.50 if (var1<var2) { alert("Value is less than minimum") } else { return true; } How can I make it work. Thanks for help in advance I'm a bit confused as I'm just learning PHP/Java, and need to display a percentage. I successfully can display a percentage, however, the decimal like any calculate displays .00000012130 whatever sometimes. How can I round the output to the nearest 10s place? <script language="javascript" type="text/javascript"> var a = "14"; var b = "25"; document.write(parseInt(a) / parseInt(b) * 100); document.write("%"); </script> This is the code I use, however, it needs to be modified so that it rounds to the nearest 10 instead of display a decimal. I am trying to develop a form that can give an estimate to viewers based on their input and I'm having a problem with decimal points. I couldn't find a very good free script online so I've done some work with this one http://www.mikeandzachsbbq.com/Catering/catering.htm When you enter 10 in the input box, it calculate 10*19.99, giving 199.9, but I want it to show 199.90. I've tried adding toFixed(2) in there, but I'm not able to get that to work....any ideas? Thanks in advance Hello: I have this js function: Code: <script type="text/javascript">
function updatesum() {
document.PaymentForm.newbalance.value = (document.PaymentForm.balance.value -0) - (document.PaymentForm.paymentamount.value -0);
}
</script>
I want to round the value of Code: document.PaymentForm.newbalance.value to two decimal points. May I request some assistance! |
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