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JavaScript - Problem With Boolean Value Being Changed Without Being Told To
Hello everyone!
I'm currently doing an assignment which involves a snack machine. I'm currently working on the PacketOfCrisp class. It needs to start with 10 crisps, and have a boolean field for whether or not it's closed. This field is called open and is obviously set to false when the object is created. It also needs to give out some messages, ie if the packet is not open then a message should appear saying that the packet is closed. If the pack has no crisps left a message should appear saying as such. Other than that when selecting eatCrisp the amount of crisps in the packet should go down by one. Here is what I have so far: Code: public void eatCrisp()
{
if(open = false) {
System.out.println("Open packet");
}
else if (open = true && numOfCrisps >= 1) {
numOfCrisps = numOfCrisps - 1;
}
else {
System.out.println("No Crisps!");
}
}
Now for some reason when I invoke eatCrisp it takes out a crisp and changes the "open" field of the object to true and I can't figure out why. As far as I can figure it should be giving me a message of "Open packet" until I open the packet with the "openPacket" method, but instead "eatCrisp" is doing that by itself. Any ideas? Similar Tutorialshey guys i have been trying for the last week to make a one of a kind login page. but i cannot figure out how to make the Slide bar initiate a Form submition i have made a sample page on jsfiddle shown here http://jsfiddle.net/Cav3maN/ZzwQq/embedded/result/ if your not farmiliar with jsfiddle just remove the embedded/result/ to see the source http://jsfiddle.net/Cav3maN/ZzwQq/ please feel free to modify the source and get it to submit. if your slider disapeers click the "Run" tab at the top. and when you get it successfully working click "Update" tab and send the new url on here for me to see. thanks very much. aslo this is a free source feel free to embed it in your site anywhere. thanks alot and please guy i beleve in you all lol im new to web coding and i wanna be successful so if you wish to show me exactly what you done to make this work i would love you for ever. I changed the code and it didn't work, so I tried to put it back to what it was. Now, the whole thing isn't working. I am a lost little child. Can someone help me please. http://www.boothemusic.com/ Here is the code: Code: <html xmlns="http://www.w3.org/1999/xhtml">
<head xmlns="">
<title>Boothe Brothers Music</title>
<script type="text/javascript">
function loadContent(page) {
switch(page) {
case "home":
document.getElementById("middle").src = "http://boothemusic.com/middle.html";
break;
case "store":
document.getElementById("middle").src = "http://boothemusic.com/catalog";
break;
case "Electric Guitars":
document.getElementById("middle").src = "http://boothemusic.com/catalog/index.php?main_page=index&cPath=1&zenid=9feb6660698a06a51571cc4cef1c3e60";
I left out most of the code because I only edited the line "case "store".....". Help, i need to edit my code to submit the form so that it will submit the data once clicked on. I am using this tutorial he http://www.switchonthecode.com/tutor...-jquery-plugin here is my code so far: my JS file: // run rating jQuery.fn.ratings = function(stars, initialRating) { //Save the jQuery object for later use. var elements = this; //Go through each object in the selector and create a ratings control. return this.each(function() { //Make sure intialRating is set. if(!initialRating) initialRating = 0; //Save the current element for later use. var containerElement = this; //grab the jQuery object for the current container div var container = jQuery(this); //Create an array of stars so they can be referenced again. var starsCollection = Array(); //Save the initial rating. containerElement.rating = initialRating; //Set the container div's overflow to auto. This ensure it will grow to //hold all of its children. container.css('overflow', 'auto'); //create each star for(var starIdx = 0; starIdx < stars; starIdx++) { //Create a div to hold the star. var starElement = document.createElement('div'); //Get a jQuery object for this star. var star = jQuery(starElement); //Store the rating that represents this star. starElement.rating = starIdx + 1; //Add the style. star.addClass('jquery-ratings-star'); //Add the full css class if the star is beneath the initial rating. if(starIdx < initialRating) { star.addClass('jquery-ratings-full'); } //add the star to the container container.append(star); starsCollection.push(star); //hook up the click event star.click(function() { //set the containers rating containerElement.rating = this.rating; // document.voteform.submit(); //When clicked, fire the 'ratingchanged' event handler. //Pass the rating through as the data argument. elements.triggerHandler("ratingchanged", {rating: this.rating}); }); star.mouseenter(function() { //Highlight selected stars. for(var index = 0; index < this.rating; index++) { starsCollection[index].addClass('jquery-ratings-full'); } //Unhighlight unselected stars. for(var index = this.rating; index < stars; index++) { starsCollection[index].removeClass('jquery-ratings-full'); } }); container.mouseleave(function() { //Highlight selected stars. for(var index = 0; index < containerElement.rating; index++) { starsCollection[index].addClass('jquery-ratings-full'); } //Unhighlight unselected stars. for(var index = containerElement.rating; index < stars ; index++) { starsCollection[index].removeClass('jquery-ratings-full'); } }); } }); }; $(document).ready(function() { $('#example-1').ratings(10).bind('ratingchanged', function(event, data) { $('#example-rating-1').text(data.rating); }); }); My html: PHP Code: echo '<form action="stream.php?task=vote" name="voteform" method="post"> '; echo ' <div id="example-1"></div> <input id="example-rating-1" type="hidden" name="score" value="0"/>'; echo '</form>'; Heres what i want it to do, I want it to submit the form once a star has been clicked, i already achieved this with the document.voteform.submit() in comments in the JS file but i cant seem to get the input to change so that it submits the actual user vote value. Please help me Anyone ever did this before? domain1.com will have a paragraph of one currency price domain2.com will have the same paragraph with a different currency price. Hello I was at the javascriptkit.com and was to use one of there Javascript calenders in my web page the "Popup Date Picker" and the "Date Time Picker". I have the calenders working fine and after the date is selected it fills in the correct textbox with the date. The problem is after the user selects the date in the calender popup window I would like it to run another javascript function. But I cannot see in the calender code how to have it call my javascript code. I also tried the OnChange event with the Textbox that the Calenders are filling in with the date but it only fires when I click in the textbox. I call the Calenders JavaScript functions from my JavaScript script function that is tied to an aspropDownList OnChange Event. Is there any way I can have these calenders call a javascript function when the date is selected in there window? Or could I try to catch when the textbox is filled in with the date and call my function then? Thanks Mike I have an ajax dependent drop down set up for location fields and am having trouble figuring out how to clear the dependent selects if the parent select is changed to blank. I set up a function to clearFields: Code: <script>
function clearFields() {
document.getElementById('cb_state').value = "";
}
</script>
And then set the parent to clearFields onchange: Code: onchange='ajaxFunction();clearFields();' This doesn't clear the field, but even if it did it would clear the field on change regardless of what's selected, what I need is for the function to fire only if the blank option is selected. How do I need to go about this? Hi, On my website, I have one of those trust seals that opens a new window to display account details. Last week it worked fine, but today it is not working. I am sure that I didn't change the code. It still works in IE but the Mox Firefox window opens with no address. This is my js code for the new window: Code: <script language="javascript" type="text/javascript">
<!--
var win=null;
function NewWindow(mypage,myname,w,h,scroll){
LeftPosition=300;
TopPosition=150;
settings='width='+w+',height='+h+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',location=yes,directories=no,status=no,menubar=no,toolbar=no,resizable=yes';
win=window.open(mypage,myname,settings);
if(win.focus){win.focus();}}
function hidestatus(){
window.status=''
return true
}
if (document.layers)
document.captureEvents(Event.MOUSEOVER | Event.MOUSEOUT)
document.onmouseover=hidestatus
document.onmouseout=hidestatus
// -->
</script>
And this is my HTML Code: <!-- // SF-Code Affiliate Marketing ##ak18d54kt** // --> <a href="http://www.support-focus.com/check.php?key=SFM64912" onclick="NewWindow(this.href,'','860','700','yes','default'); return false" onfocus="this.blur()" > <img src="http://www.support-focus.com/image_load.php?id=SFM64912" alt="Support-Focus Membership Click to Verify - Before you Buy" border="0" ></a><br><br> The actual trust seal code appears at the bottom of ths page: Affiliate Marketing test page Can anyone see any problems with the code ? I think I did get a firefox update about a week ago has anyone noticed any changes ? ( I hope its just my code that is wrong ) Oh BTW if I just enter the link from the trust seal directly into the browser, it opens fine. Thanks hi, I'm trying to modify this function: Code: function togglePoly(poly_num) {
if (document.getElementById(poly_num)) {
if (document.getElementById(poly_num).checked) {
gpolys[poly_num].show();
} else {
gpolys[poly_num].hide();
}
}
}
which works for a checkbox to one that works for a button. I guess I'm stuck on what to replace "checked" with there in the 3rd line. is there some one word answer, or do I need to I rewrite the function to be more button-friendly? thanks in advance This is perhaps a somewhat trivial point but it's bugged me a couple of times recently and I wondered if anyone out there had any thoughts on the matter. Essentially I have an action that can happen many times but I want to record whether it has happened at least once. I know we are talking about a trivial amount of processing and code here but is there any real difference between the following two methods: Code: myCheck: false,
myRepeatedlyCalledFunction: function() {
this.myCheck = true;
// do some stuff
}
vs Code: myCheck: false,
myRepeatedlyCalledFunction: function() {
if(this.myCheck === false) {
this.myCheck = true;
}
// do some stuff
}
thoughts? I am about to translate some C++ code to JavaScript. In C++, it is straightforward to declare and use a Boolean variable; all I do is swap it between true and false and back again as needed. For example, Code: // C++ Code . . . bool na = 1; . . . na = !na; . . . I am wondering if JavaScript offers boolean variables. As far as I know, it does not, but I thought I would confirm by asking around. At the moment, I am planning to code the comparable block in Javascript using an "if" statement or a ternary operation. For example, Code: JavaScript Code . . . var na = 1; // Option 1 if (na) na = 0; else na = 1; // Option 2 na = ((na) ? 0 : 1); . . . Is one of these options recommended as the best way to simulate a boolean variable and operation? (I would like the fastest-executing code possible.) Or is there another--better--way to do it? All advice and recommendations appreciated. Thank-you in advance. So. When I save a boolean to localStorage It converts it to string. PHP Code: localStorage["fixedBackground"] = document.getElementById("fBackground").checked; And that saves a 'true' or 'false' string. So to convert it to a boolean value, in the 'restore options' I use the function 'toBool' PHP Code: function toBool(str) { if ("false" === str) return false; else return str; } PHP Code: var value = localStorage["fixedBackground"]; if (null != value) document.getElementById("fBackground").checked = toBool(value); And that works just fine. However, I want to recall this saved data in a javascript. I want an PHP Code: if (value = true){ document.getElementsByTagName('body')[0].style.backgroundAttachment="fixed"; } But I can't get a 'toBool' type of function into that statement This is my method of retrieving the data: PHP Code: var port = chrome.extension.connect({name: "knockknock"}); port.postMessage({get: "fixedBackground"}); port.onMessage.addListener(function(msg) { //Set bgimage attachment javascript:value=msg.value; which makes the full if statement: PHP Code: var port = chrome.extension.connect({name: "knockknock"}); port.postMessage({get: "fixedBackground"}); port.onMessage.addListener(function(msg) { //Set bgimage attachment javascript:value=msg.value; if(value = true) { document.getElementsByTagName('body')[0].style.backgroundAttachment="fixed"; } }); any ideas? Hello. If the function called Change has ever been called, the function in window onload is to not be executed. This is what I have so far, but I am sure it's wrong or missing something. I tried to confirm the results with document.write or alert but am having trouble doing so. Code: window.onload=function(){
if (calledAtLeastOnce == false) {
Change('big', 'http://www.adomainname.com/image.jpg');
}
}
function Change(id,src,w,h){
var calledAtLeastOnce = true;
}
Hi, I am very new to javascript and html. I am trying to create a function which will hide or show a div (div1). Right now, it is always showing the div whether the boolean value is true or false. I know that it is getting inside the else if part, but it doesn't seem to be working. Code: <script type="text/javascript">
function hideDiv(flag)
{
if (flag == false)
{
document.getElementById('div1').style.visibility="visible";
}
else if (flag == true)
{
document.getElementById(div1).style.visibility="hidden";
}
}
var bool = new Boolean(true)
hideDiv(bool);
</script>
<body>
<div id="div1">
Text!
</div>
</body>
Thank you for taking a look Hello fellow programmers, I am having some trouble with my javascript doing what I want it to, which is returning values (true/false || 1/0). I haven't used much javasript but I am experienced with C#, Java, Python etc so this is sort of new to me syntax wise. Here is what I have so far: http://jsfiddle.net/HpSyJ/1/ note: for some reason css doesn't like jsfiddle :S, the error messages are hidden in my Notepad++ & firefox combo though Really all I want is when I hit submit, it runs an alert or changes the error message to visible. Can someone please have a quick read over and see if anything jumps out at them? Thanks in advance, Andrew Hi pals, I am really tired in this problem of event keyup. I given same in my keyup function like: $(document).ready(function () { alert("GGG"+parseInt(jQuery.browser.version)); //To display test value working $("#find_text").keyup(function(e) { if(e.which == 13) { alert('Enter key was pressed'); //enter Here alert("FFF"+parseInt(jQuery.browser.version)); //Here got Error } }); }); I got Error : jQuery is not defined alert("FFF"+parseInt(jQuery.browser.version)); I use keycode,which , but no help, It's Work nicely in Chrome Browser but not in FF. Please give a Solution reply ASAP, I am really Tired.The code enter the Condition But that jQuery part make error. Thankfully Anes P.A this is coder javascript : textneu = textneu.replace(/haha/,"<img src='../images/21.gif'>"); Result: <img src='../images/21.gif'> why? i want result is : <img src='../images/21.gif'> Scratch that, its started working... oh well haha For help I m putting it all together ..copy and paste and run ... I used 2 browsers IE and mozilla... you fill find the problem ...I know some one will definatly solve my problem ..... Code: <script type="text/javascript" language="JavaScript"><!--
function ManageTabPanelDisplay() {
var idlist = new Array('tab1focus','tab2focus','tab3focus','tab4focus','tab1ready','tab2ready','tab3ready','tab4ready','content1','content2','content3','content4');
if(arguments.length < 1) { return; }
for(var i = 0; i < idlist.length; i++) {
var block = false;
for(var ii = 0; ii < arguments.length; ii++) {
if(idlist[i] == arguments[ii]) {
block = true;
break;
}
}
if(block) { document.getElementById(idlist[i]).style.display = "block"; }
else { document.getElementById(idlist[i]).style.display = "none"; }
}
}
//--></script>
<style type="text/css">
.tab {
font-family: verdana,sans-serif;
font-size: 12px;
width: 100px;
height:30px;
white-space: nowrap;
text-align: center;
border-style: solid;
border-color: #9a9a9a;
border-left-width: 1px;
border-right-width: 1px;
border-top-width: 1px;
border-bottom-width: 0px;
padding-top: 5px;
padding-bottom: 5px;
padding-left:3px;
padding-right:3px;
cursor: pointer;
}
.tabhold {
background-color:#9a9a9a; /*color of menu #666666*/
color: white;
}
.tabfocus {
background-color:white;
color: #666666;
}
.tabcontent {
font-family: sans-serif;
font-size: 12px;
height: 320px;
border-style: solid;
border-color: #9a9a9a;
border-width: 1px;
padding-top: 15px;
padding-left: 10px;
padding-right: 10px;
overflow-y:scroll;overflow:-moz-scrollbars-vertical;
}
</style>
<table border="0" cellpadding="0" cellspacing="0" >
<tr >
<td>
<div id="tab1focus" class="tab tabfocus" style="display:block; padding-top:10px; height:39px;" >
Overview
</div>
<div id="tab1ready" class="tab tabhold" style="display:none; padding-top:10px;height:39px;">
<span onclick="ManageTabPanelDisplay('tab1focus','tab2ready','tab3ready','tab4ready','content1')" >Overview
</span>
</div>
</td><td > </td><td>
<div id="tab2focus" class="tab tabfocus" style="display:none;">
Dimensions <br />
& Details
</div>
<div id="tab2ready" class="tab tabhold" style="display:block;">
<span onclick="ManageTabPanelDisplay('tab1ready','tab2focus','tab3ready','tab4ready','content2')">Dimensions <br />
& Details</span>
</div>
</td><td > </td><td>
<div id="tab3focus" class="tab tabfocus" style="display:none;">
Quantity <br />
& Constructions
</div>
<div id="tab3ready" class="tab tabhold" style="display:block;">
<span onclick="ManageTabPanelDisplay('tab1ready','tab2ready','tab3focus','tab4ready','content3')">Quantity <br />
& Constructions</span>
</div>
</td>
<td > </td><td>
<div id="tab4focus" class="tab tabfocus" style="display:none;">
Customization <br />
Options
</div>
<div id="tab4ready" class="tab tabhold" style="display:block;">
<span onclick="ManageTabPanelDisplay('tab1ready','tab2ready','tab3ready','tab4focus','content4')">Customization <br />
Options
</span>
</div>
</td>
<td width="100%"> </td><td>
</tr>
<tr >
<td colspan="8" >
<div id="content1" class="tabcontent" style="display:block;">
content1
</div>
<div id="content2" class="tabcontent" style="display:none;">
content2
</div>
<div id="content3" class="tabcontent" style="display:none;">
content3
</div>
<div id="content4" class="tabcontent" style="display:none;">
content4
</div>
</td></tr>
</table>
please help thanks I'm working with this form which has js calendar. unfortunately, I can't get the calendar to work onclick. It produces the following error: Code: Uncaught SyntaxError: Unexpected token can't make out the error. Not sure if this is related to another onclick function. Here is the actual code: Code: <form name='PaymentForm' onsubmit='return ValidatePaymentForm();' action='updatebalancedue.php' method='post'> <input type=\"hidden\" name=\"edit_sel_id\" value=\"$sel_id\"> <div id=\'pmt_header\'><center><table class=\'tablestyle2\' width=90% cellpadding=2 cellspacing=0> <tr valign='top'> <td style=\'border:1px solid #cccccc;\' width=\"28%\" align=\"justify\"> <table class=\'tablestyle_inner\' width=\"170\"> <tr> </td> </tr> <tr><td bgcolor='#000000'><font color='#FFFFFF' class='label'>Payment Received Date:</td> </tr> </table> <input type='text' value='$date' readonly name='theDate' size='11'><input type='button' class='NonPrintable' value='Calendar' onclick='displayCalendar(this.form.theDate,'yyyy/mm/dd',this)'> </td> <td style='border:1px solid #cccccc;' width=\"35%\"> <table class='tablestyle_inner' width='607'> <tr><td valign='top'class='label' width='110'>Date of Invoice</td> <td width='196'><span id='_PayType_sel'><input name='$date_on_invoice' value='$date_on_invoice' disabled='true' style='float: left' valign='top'></td> <td valign='top' width='106'>Client ID: </td><td valign='top'> <input name='$clientID' value='$clientID' disabled='true' style='float: left'></span></td> <tr><td class='label' width='110'>First Name:</td><td width='196'><input type='text' size='22' maxlength='50' value='$firstname' disabled='true' style='float: left'></td><td valign='top'>Last Name:</td><td valign='top'><input type='text' size='22' maxlength='50' value='$lastname' disabled='true' name='T1' style='float: left'></td> </tr> </table> </td> <td style='border:1px solid #cccccc;' width='35%' align='right'> <table class='tablestyle_inner'> <tr><td bgcolor='#000000'><font color='#FFFFFF' class='label' align='left'>New Bal.:</td></tr><tr><td><input name='dollarsymbol3' size='1' readonly style='border:0px;' value='$'><input id='amount' name='newbalance' readonly style='color: #EE0000' size='8' maxlength='16' value='0.00'> <!--<input type='text' name='newbalance' disabled='true' size='16' maxlength=\"18\" value='$0.00'--></td> </tr> </table> <td style='border:1px solid #cccccc;' width='35%' align='right'> <table class='tablestyle_inner'> <tr><td bgcolor='#000000'><font color='#FFFFFF' class='label' align=\"left\">Payment Reference:</td></tr><tr><td><input type='text' name='paymentref' size='16' maxlength='18' value='$RNO'</td> </tr> </table> </table></center> <br></div> <div id='items_table'><center> <table class='tablestyle' colspan=7 width='89%' cellpadding=2 cellspacing=0> <tr> <td style='border:1px solid #cccccc;' width=' 15%' class='tableheader' bgcolor='#000000'><font color='#FFFFFF'> Invoice Number</td> <td align='center' style='border: 1px solid #cccccc;' width=' 15%' class='tableheader' bgcolor='#000000'><font color='#FFFFFF'>Service Description</td> <td style='border: 1px solid #cccccc;' width=' 15%' class='tableheader' bgcolor='#000000'><font color='#FFFFFF'>Balance Due</td> <td style='border: 1px solid #cccccc;' width=' 15%' class='tableheader' bgcolor='#000000'><font color='#FFFFFF'>Payment</td> <td style='border: 1px solid #cccccc;' width=' 15%' style='border:1px solid #cccccc;' width=' 15%'class='tableheader' bgcolor='#000000'><font color='#FFFFFF'>Payment Type</td> </tr> <tr> <td valign='top' style='border-left: 0px solid #cccccc;' width=' 15%'><input type='text' name='$invoicenum' disabled='true' size='12' maxlength='10' value='$invoicenum' class='combo3' rel='code_id' title=''> </td><td valign='top' style='border-right: 0px solid #cccccc;' width=' 15%' ><span id='_code_id_sel'> <!-- the line below serves to auto adjust the textarea box in accordance with the box's content. The class allows the box to expend to 1000 this works with two files jquery.textarea-expander.js and jquery-1.3.2.min.js --> <textarea name='mytextarea' id='mytextarea' rows='3' cols='60' disabled='true'class='expand10-100'>$servicedesc</textarea> <!--<textarea name='servicedesc' cols='30' rows='2' disabled='true' >$servicedesc</textarea></span>--> </td> <input type=\"hidden\" name=\"dimension2_id\" value=\"0\"> <td valign='top' style='border-left: 0px solid #cccccc;' width=' 15%' align='left'> <input name='dollarsymbol2' size='1' readonly style='border:0px;' value='$'><input id='amount' name='balance' size='12' disabled='true' value='$new_bal' onChange='updatesum()'> <!--<input class='amount' type=\"text\" name='balance' disabled='true' size=\"15\" maxlength=\"15\" dec=\"2\" value='$Balancedue'>--></td> <td valign='top' style='border-left: 0px solid #cccccc;' width=' 15%' align='left'> <input name='dollarsymbol1' size='1' readonly style='border:0px;' value='$'><input id='amount' name='paymentamount' size='12' style='color: #71C671' value='0.00' onChange='updatesum()'></td> <td valign='top' style='border-left: 0px solid #cccccc;' width=' 15%' ><span<select autocomplete='on' name='paymenttype' ><OPTION>Select One <OPTION>Cash <OPTION>Check <OPTION>Visa <OPTION>Master Card <OPTION>AMEX <OPTION>Discover <OPTION>Other </select></span></td> </tr> </table></center> </div> <br><table align='center'><tr><td >Memo</td><td><textarea STYLE='display:inline' name='memo' cols='50' rows='3'></textarea></td> </tr> </table> <br><br><center><input type='button' class='NonPrintable' value='Select Another Record' ONCLICK='history.go(-1)'> <input type='submit' name='submit' class='NonPrintable' value='Record Payment'> <input type='button' class='NonPrintable' onClick='window.print()' value='Print' /> </center> </p> </form>"; I'm using the form within a php code. This is my script section: Code:
<script type="text/javascript" src="../../js/jquery-1.3.2.min.js"></script>
<script type="text/javascript" src="../../js/jquery.textarea-expander.js"></script>
<script>
function ValidatePaymentForm()
{
var paymentamount = document.PaymentForm.paymentamount;
var paymenttype = document.PaymentForm.paymenttype;
if (paymentamount.value == "0.00")
{
window.alert("Sorry, no Payment Amount is indicated!");
paymentamount.focus();
return false;
}
if (paymenttype.value == "Select One")
{
window.alert("Indicate form of payment!");
paymenttype.focus();
return false;
}
return true;
}
</script>
<!--script for calendar begins-->
<link type="text/css" rel="stylesheet" href="dhtmlgoodies_calendar.css?random=20051112" media="screen"></LINK>
<SCRIPT type="text/javascript" src="dhtmlgoodies_calendar.js?random=20060118"></script>
<!--script for calendar ends-->
The calendar code is highlighted in red. any assistance is appreciated! |
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