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JavaScript - Simple Function Works, But Then Stops Working Once I Add An Argument?/parameter
I have a simple function to display an image when called, but if I try to rewrite the function to take the image as an argument, it stops working. I've looked at other function examples on the web but can't figure out what I am missing. Can anyone help?
works: Code: <html>
<script language="JavaScript">
var ImagePlusSign = '<img src="plus.jpg" name="slide" width="65" height="50"/>';
function FlashImagesThenWait()
{
document.getElementById("first").innerHTML = ImagePlusSign
}
setTimeout(FlashImagesThenWait, 1500);
</script>
<body>Hello.
<div id="first">
</div>
</body>
</html>
does NOT work : Code: <html>
<script language="JavaScript">
var ImagePlusSign = '<img src="plus.jpg" name="slide" width="65" height="50"/>';
function FlashImagesThenWait(z)
{
document.getElementById("first").innerHTML = z
}
setTimeout(FlashImagesThenWait(ImagePlusSign), 1500);
</script>
<body>Hello.
<div id="first">
</div>
</body>
</html>
Similar TutorialsHey guys, so I'm trying to make a single function that will check to make sure the e-mails in both fields match AND to make sure the e-mail is in proper format. Strangely, with both if statements included the form will return no messages at all. If I comment out the if statement checking for proper format, the if statement to check for matching e-mail works just fine. I want this all to be in one function because I'm wanting it to be executed onSubmit with the form. Let me know what you guys think, any help is greatly appreciated: Code: <html>
<head>
<script type="text/javascript">
function verifyEmail()
{
var x = document.forms["emailForm"]["enterEmail"].value;
var y = document.forms["emailForm"]["confirmation"].value;
var atpos = x.indexOf("@");
var dotpos = x.lastIndexOf(".");
if (x != y) {
var msg = "The email addresses entered do not match, please enter matching email addresses";
document.getElementById("error").innerHTML = msg;
return false;
}
if (atpos < 1 || dotpos < atpos + 2 || dotpos + 2 > = x.length) {
var msg = "Improper e-mail format";
document.getElementById("error").innerHTML = msg;
return false;
}
else {
return;
}
}
</script>
</head>
<body>
<form name="emailForm" onsubmit="return verifyEmail();" method="post">
E-Mail Address: <input type="text" name="enterEmail">
Confirm E-Mail Address: <input type="text" name="confirmation">
<input type="submit" value="Submit"> <span id="error"></span>
</form>
</body>
</html>
I'm trying to create a navigation bar with four elements. If the element is currently selected it will have a "red" background image, if it is one of the other 3, it will have a "black" background image. my four tabs are 'timetable, homework, notifications and sport' I tried making 8 functions like the 2 below Code: function setTimeRed()
{
document.getElementById("time").style.ClassName = 'timetable_r';
}
function setTimeBlack()
{
document.getElementById("time").style.ClassName = 'time_r';
}
And then four blocks like this: Code: function changeTimeButton()
{
var timePath = new String();
timePath = document.getElementById("timetable").style.backgroundImage;
if(timePath == "url(assets/img/tabs/time_black.png)" || timePath == "")
{
setTimeRed();
setHomeBlack();
setNotiBlack();
setSportBlack();
}
else {
}
}
finally, my html has this: Code: <div id="tabbar">
<ul id="tabs">
<a href"#" onclick="changeTimeButton()">
<li id="timetable" class="time_b">
<p>Timetable</p>
</li>
</a>
<a href"#" onclick="changeHomeButton()">
<li id="homework" class="home_b">
<p>Homework</p>
</li>
</a>
<a href"#" onclick="changeNotiButton()">
<li id="notifications" class="noti_b">
<p>Notifications</p>
</li>
</a>
<a href"#" onclick="changeSportButton()">
<li id="sport" class="sport_b">
<p>Sport</p>
</li>
</a>
</ul>
</div>
It works once then does nothing. Why, and how would I go about fixing this?? Please help! I have a clock that works onbodyload, however using the below function on the same page, stops my clock even coming up, any help would be great. Code: <script language="JavaScript">
var HAS_EXPIRED = 'Time has Expired!';
var IS_NONE = 'None';
function secondCountdown(s){
if(s){
var timeleft = document.getElementById('timeleft').innerHTML;
if((timeleft == HAS_EXPIRED) || (timeleft == IS_NONE)) return false;
timeleft = timeleft.replace('<font>', '');
timeleft = timeleft.replace('</font>', '');
var time = timeleft.split(":");
var secs = time[2] * 1;
var mins = time[1] * 1;
var hrs = time[0] * 1;
secs += (mins * 60) + (hrs * 3600);
secs -= 1;
if(secs <= 0){
document.getElementById('timeleft').innerHTML = HAS_EXPIRED;
return false;
} else {
hrs = Math.floor(secs/3600);
secs -= (hrs * 3600);
mins = Math.floor(secs/60);
secs -= (mins * 60);
if(hrs < 10) hrs = '0' + hrs;
if(mins < 10) mins = '0' + mins;
if(secs < 10) secs = '0' + secs;
document.getElementById('timeleft').innerHTML = hrs + ':' + mins + ':' + secs;
}
}
setTimeout('secondCountdown(true)',1000);
}
bootloaderAdd('secondCountdown()');
bootloaderOn();
</script>
ok so Code: document.write("Goodbye!");
works but I put ^ that inside a function Code: function SayHello ()
(
document.write("Goodbye!");
)
and it stops working? I know the function call works because when I place some code to display an image in SayHello function, it displays the image. Hi, I am facing a problem in passing replace() function as an argument in user defined java function, can any one help me how to resolve it? intention is to pass a file path to my user defined function, but before passing the path i want to replace the character '\' to '\\' I am posting my javascript function he <a href="#" onclick="OpenDocPreview('<%# Eval("PATH")%>'.replace(/\\/g,"\\\\"), '<%# Eval("Filename")%>')"><%# Eval("DocTitle") %></a> function OpenDocPreview(url, docname) { alert('message from search base : ' + url + ' ' + docname); } thank you, Hi, I have a small script that tries to open a child window. if successful, it then closes the child window and redirects the parent window. If this process fails, there is no child window, no redirection. the script below works fine in FireFox but in Chrome, if the process fails, the redirection still happens. I'm new to JS would appreciate your help many thanks Code: <script type="text/javascript">
function openwindow(){
testWindow = window.open("popup.php","interaction");
setTimeout(function() { testWindow.close(); },1000);
setTimeout(function() { window.location = "http://www.google.com"; },1000);
}
</script>
My website is all up and running and I decided to put a new image viewing script on, I already had a revolving image script showing all my previous work before but the latest script has totally stopped the previous from working. You can view what I mean at www.actioncomputing.co.uk I am using 2 scripts both available on Dynamic Drive they are Lightbox image viewer 2.03a Ultimate Fade-in slideshow (v2.1) If anyone can tell me why this is I would be extremely gratefull. Hey everyone, I have a page where I call two external javascript files, and they work perfectly when I have all the files on my desktop. But once I transferred all the files into a folder, the scripts stop working. What's going on?! EDIT: Nevermind. I just forgot to relocate my jquery file! Hi guys , i have this function that allows me to hide a <div ID="ID1"> . function hide(X) { document.getElementById('X').style.visibility='hidden'; } <p><a href="#" onclick="hide('ID1');">show me/</a></p> <div ID="ID1" style="visibility:hidden">This is the content</div> the issue the function only works when i change X by ID1. i want to make it for any ID called with the function by assigning any DIV "ID" as an argument. any help ? thanks Hello, I am trying to execute a javascript function passed as argument. I am not sure of the exact way to do it. <html> <head> <script type="text/javascript"> var checkLink = function(linkId, enabledFunction){ var linkidObj = document.getElementById(linkId); if(linkidObj.className=="activelinktext" ) { enabledFunction(); return false; } else if(linkidObj.className=="inactivelinktext") { return false; } alert("*inside CheckLink*"+enabledFunction); }; </script> </head> <body> <a class="inactivelinktext" onclick="checklink(this,"javascript:goback();")"> </body> </html> Thanks, -Vijay Ok, guys. I'm new to JavaScript, so go easy. I'll be asking bunches of "dumb" questions for a while. 1st question, and the only one for now ... Say I have the following function: Code: function SwapValues(SwapVal1,SwapVal2)
{
TempSwapVal=SwapVal1;
SwapVal1=SwapVal2;
SwapVal2=TempSwapVal;
}
I don't care about the return value of the function itself, but I do need the new values of SwapVal1 and SwapVal2. In ASP when I do this, the values get returned. How do I get this to work in JS? Hello again! Is there any way to pass a function(with its parameters) to another function using a parameter? Examples: Here is how I do it now: PHP Code: function output(text){ alert(text); } function bla(text, func){ output(text); } bla("Text is here", output) //Outputs "Text is here" I only want to pass the function to bla() as a parameter. I need something like this: PHP Code: function output(text){ alert(text); } function bla(func){ output(); } bla(output("Text is here")) //Outputs "Text is here" Is this possible in some way? Thanks in advance. Hi, New to JS. Have ordered some new books, but need to get somethings going in the mean time. What I wanted to do is to link to a new page having a date range input in the form of 6 text boxes, 2 sets of mm-dd-yy, from and to, where the upon loading the page box 1 of the from would auto focus and then auto tab and then post where php could take over on the server side. Setting up the form and the lay out, no problem. Auto focusing went just like expected using the following code, included because on the next step everything fell apart. [/CODE] <script type="text/javascript" > window.onload=function() { document.getElementById("input1").focus(); } </script> [/CODE] So then the wheels came off and in response, began to simplify what was trying to be done to find where the issues were. As far as I can get working is: Code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<script type="text/javascript" >
window.onload=function() {
document.getElementById("input1").focus();
}
</script>
<script type="text/javascript" >
function myFunc() {
alert("is this working");
}
</script>
</head>
<body>
<input id="input1" name="input1" type="text" onkeyup="myFunc()" maxlength="2" value="type a No." />
</body>
</html>
First issue with this: When I first get to the page everything is just as ordered. The focus is on the text box and the default value is "type a No." When I press a key onkeyup, I bring up the alert box with "is this working" in it. But when I refresh the page with the refresh button, after clicking the "ok" on the alert box, the character that was typed in is still displayed. If I use the link to the page, or the URL from the address bar, then the page reloads properly with the default value, "type a No". Question 1: How do you get the default textbox value using the refresh button as apposed to reloading the page using a link or from the address bar? Using Firefox 8.0 Second and more important at the moment: If I change the script to pass an argument to the function the script crashes. It does not pull up an alert box and freezes. My guess is that I'm doing something wrong on a concept level. NOTE: changed the default value of the text box to " ". Looked like to me there was an issue with the size specification and the default string length as you could only enter in a key stroke by highlighting the text and replacing it Code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<script type="text/javascript" >
window.onload=function() {
document.getElementById("input1").focus();
}
</script>
<script type="text/javascript" >
function myFunc(awe) {
alert(awe);
}
</script>
</head>
<body>
<input id="input1" name="input1" type="text" onkeyup="myFunc("123")" maxlength="2" value="" />
</body>
</html>
Question 2: can someone straighten me out with this? Hi! I'm trying to toggle a class and one works and the other does not and I don't know why. I'm just getting my feet wet with jquery and javascript and I figured this was a pretty easy task to take on! Maybe. Link to the page: Franklin Township Soccer Club - Change Field Status My sad, sorry attempt =| Code: $( "li.open" ).click(function() {
$( this ).toggleClass( "closed" );
});
$( "li.closed" ).click(function() {
$( this ).toggleClass( "open" );
});
The first function works with open, so I figured I'd just use opposite on closed! Ha! I don't think so! In the end within those function there is an element in a form on that page it's hidden. I'd like to change the value from a 0 to 1 for vice versa. That' will be my next step. If you could give me a little nudge in the right direction I'd appreciate it! But first understanding why one works and the other does not, that is the primary mission! I do appreciate any help given! Dave Hi all I'm adding buttons to my google map through a loop. I pass some parameters, and the addButtons() function creates the buttons. How can I pass the "task" for the button to the function? In the addDomListener line below, I'm now writing the function name literally, I'd like find a way with a parameter. Thank you.. Code: // The loop...
for (i=0;i<=4;i++) {
oCC = addButtons(aCtrls[i],'btnContainerChild');
...
}
// The function...
function addButtons(cButtonID,cClassName) {
var oButton = document.createElement('DIV');
oButton.className=cClassName;
oButton.id=cButtonID;
//... other settings here...
// ===> Here, I'd like to set the click function through a parameter
google.maps.event.addDomListener(oButton, 'click', function()
{gmapSetCenter(defaultCenter)});
Hi, I am learning javascript from a book ("Javascript and JQuery Missing Manual") and one example there sets my head spinning and I can't understand how the script works. I'd be very grateful if someone could write a few words about the aspect I don't understand. Basically it is line seven I don't understand. How is the word question tied to the items in the questions array. I understand the 0 and 1 on line eight and nine and why they focus on the first and second item in the sub-array, but still, how can the word question point to the relevant item in the questions array? Code: var score = 0;
var questions = [
['How many moons does Earth have?', 1],
['How many moons does Saturn have?', 31],
['How many moons does Venus have?', 0]
];
function askQuestion(question) {
var answer = prompt(question[0], '');
if (answer == question[1]) {
alert('Correct!');
score++;
} else {
alert('Sorry. The correct answer is ' + question[1]);
}
}
for (i=0; i<questions.length; i++) {
askQuestion(questions[i]);
}
Please advise me: I've successfully called a variety of functions that have no parameter value such as: function expand() //expand() in this line is merely an example But I'm unsuccessful calling a function with a paramter value such as: function expand(id) Here is the the call line: document.addEventListener("DOMContentLoaded", expand(id) , false); Here is the Function: function expand(id) { for (var i = 1; i<=10; i++) { if (document.getElementById('smenu'+i)) { document.getElementById('smenu'+i).style.display='none'; } } if (id) { id.style.display='block'; } } Hey guys, i have a question about my array. I have an array called numberarray with 20 elements and i want it to be accepted into a function as a parameter? But i only want the first 10 to be accepted. Does anyone know exactly how i would go about doing this in my function?
I have a good understanding of javascript although I am new to working xml. So I am having a problem getting javascript to recognize that my parameter value in my function call is an attribute in my xml. I called the js function like this: Code: <a href="#" onClick="ebookCategory(marketing);">Marketing</a> Here is my js function: Code: var category;
function ebookCategory(category) {
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.open("GET","ebook.xml",false);
xmlhttp.send();
xmlDoc=xmlhttp.responseXML;
document.write("<table border='1'>");
var x=xmlDoc.getElementsByTagName(category);
for (i=0;i<x.length;i++)
{
document.write("<tr><td>");
document.write(x[i].getElementsByTagName("bookCover")[0].childNodes[0].nodeValue);
document.write(x[i].getElementsByTagName("title")[0].childNodes[0].nodeValue);
document.write(x[i].getElementsByTagName("description")[0].childNodes[0].nodeValue);
document.write(x[i].getElementsByTagName("price")[0].childNodes[0].nodeValue);
document.write("</td><td>");
i++;
document.write(x[i].getElementsByTagName("bookCover")[0].childNodes[0].nodeValue);
document.write(x[i].getElementsByTagName("title")[0].childNodes[0].nodeValue);
document.write(x[i].getElementsByTagName("description")[0].childNodes[0].nodeValue);
document.write(x[i].getElementsByTagName("price")[0].childNodes[0].nodeValue);
document.write("</td></tr>");
}
document.write("</table>");
} // end ebookCategory()
Some of the aspects in this function are new to me, xml stuff. Here is my xml setup: Code: <ebook category="marketing"> <bookCover><img src="/millionaire/ebooks/covers/miracle2.jpg" height="150" width="150" /></bookCover> <title>Marketing Miracle</title> </ebook> I appreciate any help in the matter Code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
<script>
window.onload = function(){h = parseInt(document.getElementById( "div1" ).style.height);}
var t;
function addHeight(openAccordionID){
clearInterval(t);
document.getElementById(openAccordionID).style.height = h+"px";
h+=1;
t = setInterval("addHeight('"+openAccordionID+"')",10);
for(var x=1; x<h; x++)
if(h%(x*100)==0){clearInterval(t);}
}
</script>
</head>
<body>
<div id="div1" onclick="addHeight(this.id)" style="width: 200px; height: 20px; background-color: yellow;">Increase Height</div>
</body>
</html>
How can I still use the parameter "openAccordionID" in the blue-highlighted part? I tried, but it failed. |
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