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JavaScript - Creating Mouseover Events For Dynamic Links In Js
My application reads an array of URLs in Javascript and displays them in a table. I need to create mouseover events for each of the links (just an alert message for now.) I have tried this a few ways, but for each one the mouseover event fires for each link before anything else is loaded on the page, and when the page is loaded, no link is displayed. Here are the two ways I've tried:
Code:
var cell1 = document.createElement("TD");
cell1.innerHTML = '<A HREF= ' + url + 'onMouseOver="' + alert("my alert box"); + '"> my page </A>';
Code: cell1.innerHTML = '<A HREF= "' + url + '"> my page </A>';
cell1.onMouseOver = alert('alert');
I have also tried many variations of these including: Code: cell1.innerHTML = '<A HREF= "' + url + '"> my page </A>';
cell1.onMouseOver = function(){alert('alert');};
Code:
var cell1 = document.createElement("TD");
cell1.innerHTML = '<A HREF= " ' + url + ' " onMouseOver=" alert("my alert box"); "> my page </A>';
But they all yield the same result, so any help would be much appreciated! Similar TutorialsHi, I have a small problem with a page I'm working on. I have an anchor tag inside a table that has a mouseover event that updates a contextual help box. I need to add a similar mouseover event to the anchor tag that does the same thing, but updates the help box with different text. The problem I have is that when the mouse is over the table, no matter if I move the mouse over the anchor, the help text only displays the message that is passed from the table's mouseover function call. I think the solution *may* be something to do with event bubbling, but I'm not exactly sure how to implement it. The code I'm dealing with is below: The code below is PHP. The table mouseover (for reference): Code: echo "<table class='cleanTable' width='100%' style='margin-top: 5px'";
echo " onMouseOver=\"updateHelpText('Message 1.');\" onMouseOut='clearHelpText();'>";
echo "<tr><th> </th><th> </th><th>First Name</th><th>Surname</th><th>Last Login</th></tr>";
The anchor mouseover: Code: echo "<tr class='cleanrow'><td><a href='newMember.php'><img border='0' src='images/icon_add.gif'></a></td><td></td>";
echo "<td colspan='3'><a class='workbenchLink' href='newMember.php' onMouseOver=\"updateHelpText('Message 2');\" onMouseOut='clearHelpText();'>Invite a new colleague...</a></td></tr>";
echo "</table>";
The function (javascript): Code: function updateHelpText(newText) {
document.getElementById("helpBox").innerHTML = "<h4> " + newText + "</h4>";
}
Any help with this would be great, thanks. hi i am newbie to js please help me like a newbie thanks. i want to make a form. the form will have three text fields and with two buttons. what i want with this form is when the user enters the first three fields and if he wants to add more then he will click on add more button and on the same page three more fields will appear below the first three fields. the user will then enter these three fields then if he wants to add more then he will click on add more button. so three more fields will appear below the first six fields. user will enter these fields. he will be allowed to enter upto eight or less than eight times. once he finishes with this then he will click the second button to insert this data into db. I am using a freebie script that changes css elements using onClick when you hit a button. I have 12 choices I want to add, and don't want 12 buttons, but rather a dropdown list. 2 button examples (and js code) is: <input onclick="changecss('li','background','url(images/list_02.jpg) no-repeat 10.2em .12em')" value="Change to BG 2" type="button" /> <input onclick="changecss('li','background','url(images/list_03.jpg) no-repeat 10.2em .12em')" value="Change to BG 3" type="button" /> How do I convert this to a SELECT list?? Thank you! Hi, I searched the web for a button that can be animated, as well as dynamic. but I couldn't find one, so I decided to try my hand at creating one. My method is similar to a post made by Bram2: http://codingforums.com/showthread.php?t=153326, however, I have found my code to be unreliable and it doesn't apply only to the area where the table is, instead of spreading across the screen. The reason for trying to create a button this way is because I'm lazy, I don't want to create a new button in a graphics editor, spending hours trying to make it uniform with the rest of the buttons on the page, every time I want a new button. Doing it this way will also enable to have buttons with mulitple lines of text. I am fairly new to javascript, so I am wondering if anyone can give me a hand making it more reliable or pointing me to a script that has already been created. I put the button Here instead of filling the post with code. Please look at it before telling me it can be done with the <button> tag, because I tried before posting here. thanks, grayatrox Edit:I have managed to get the code to do what I wanted it to do, and more efficently too. Old code is commented out in the orginal webpage. This is a working example on how to impliment the buttons. javascript: Code: /*
Notes:
- Each button MUST have a unique name.
- You may need to create a secondary function that the button can activate like I did with the go(url) function below.
- Email me (grayatrox) at 238atrox@gmail.com for bugs, or to suggest improvements.
- Yes I know tables within tables is bad, if you read through my code carefully you will see where I am talking about.
*/
function loadButton() { //preload the buttons.
image1 = new Image();
image1.src = "images/button_up_L.png"; //button up left
image2 = new Image();
image2.src = "images/button_up_C.png"; //button up centre
image3 = new Image();
image3.src = "images/button_up_R.png"; //button up right
image4 = new Image();
image4.src = "images/button_down_L.png"; //button down left
image5 = new Image();
image5.src = "images/button_down_C.png"; //button down centre
image6 = new Image();
image6.src = "images/button_down_R.png"; //button down right
}
function createButton(buttonName, buttonText, buttonAction, id) { // create the code for a button
output= "<table border='0' cellpadding='0' cellspacing='0' id="+buttonName+">";
output=output+"<tr name="+buttonName+" onclick=\""+buttonAction+"\" onmouseover=\"changeButton('down', '"+buttonName+"')\" onmouseout=\"changeButton('up', '"+buttonName+"')\">";
output=output+"<td align='right'><img id='"+buttonName+"_leftImage' src='images/button_up_L.png'/></td>";
output=output+"<td id='"+buttonName+"_middleImage' align='middle' background='images/button_up_C.png'/>"+buttonText+"</td>";
output=output+"<td align='left'><img id='"+buttonName+"_rightImage' src='images/button_up_R.png'/></td>";
output=output+"</tr>";
output=output+"</table>";
return output;
}
function writeButton(buttonName, buttonText, buttonAction) { // write button immediatly below where function has been called
document.write(createButton(buttonName, buttonText, buttonAction));
}
function writeButtonInId(buttonName, buttonText, buttonAction, id) { // write the button in an id
document.getElementById(id).innerHTML=createButton(buttonName, buttonText, buttonAction);
}
function changeButton(action, name) { // button animation
if (action== "up") {
document.getElementById(name+'_leftImage').src="images/button_up_L.png";
document.getElementById(name+'_middleImage').style.backgroundImage ="url(images/button_up_C.png)";
document.getElementById(name+'_rightImage').src="images/button_up_R.png";
} else if (action== "down") {
document.getElementById(name+'_leftImage').src="images/button_down_L.png";
document.getElementById(name+'_middleImage').style.backgroundImage ="url(images/button_down_C.png)";
document.getElementById(name+'_rightImage').src="images/button_down_R.png";
}
}
function go(url) { // written becuase there were too many ' and ". You can do this for any javascript function (I hope)
document.location=url;
}
Hey all! So there I was newly hired and tasked with pouring through someone else's code to see what could be modified and brought up to date. After successfully finding the errors and correcting them and fulfilling the tasks my new supervisor assigned me, he slaps me on the back and says, "Well done! Now make it dynamic!" By which he meant the chapter buttons I spent hours creating from the existing code. Here's what he wants: the old code has an array, we'll call it someArray, that is assigned its values by the instructional developer as html pages are added to the course. So for example the code might look like this, Code: var someArray = new Array(4);
someArray[0] = "video1/video1.html";
someArray[1] = "video2/video2.html";
someArray[2] = "video3/video3.html";
Now, each page has an associated chapter button. So video1/video1.html would have ch1Btn, video2/video2.html would have ch2Btn and so forth. Each button in turn calls a specific function which does only one thing - sets the currentPage variable to page associated with that button/array contents. For example, I have created the following functions to call each page: Code:
function doCh1(){currentPage = 0; goToPage();}
function doCh2(){currentPage = 1; goToPage();}
function doCh3(){currentPage = 2; goToPage();}
I should mention that all this is being done from within an html wrapper that calls each page into an iframe. The currentPage variable is assigned the url of one of the elements from the pageArray. My supervisor wants to be able to manually add pages to the pageArray and have the javascript code generate the associated buttons and function calls so when the learner clicks on one of the dynamically created buttons, s/he is taken to the correct page. Currently I'm using static images with the onclick calling the correct function to set my currentPage value and send the learner on his/her merry way. Is there a way to do all of this dynamically? If so, can you help me get my head around this by providing some examples? Sorry for the long post. Thank you, M Hello, I'm trying to create a webpage where users can click on a dynamically generated set of questions: <?php do { ?> <p><?php echo $row_rsQuestions['question_text']; ?><?php echo $row_rsQuestions['question_type']; ?></p> <?php } while ($row_rsQuestions = mysql_fetch_assoc($rsQuestions)); ?> and by clicking on a particular question, there will be an update for their particular listing of personal questions in a MySql database. I know how to create the database update part, but I think that I would need to javascript to: 1) tell my page that it's time to update (i.e. add a particular question as soon as they click it) 2) pass along the correct variable to the database update portion of the page. Any help on these two items would be appreciated. Thank you! I hope you will forgive the ineptitude of this question, but I'm starting from a severely beginner's level! In my website, I want each button clicked on the home page to define a variable URL that determines which 'default' page is navigated to first when people visit the Gallery section. i.e. If the "About Racing" link is clicked, then when the Gallery section fires up, the first page/picture seen is the Racing Car pic page. I am sure this is possible, but haven't managed to work out quite how to do it.... Any help will be very gratefully received! Below is a javascript function from my website that loops through nodes in an XML file retrieving certain information about those who joined in the current month/year. The part in red creates a link which when clicked runs a function called show() with the relevant i variable value e.g. show(2) for the second node if that is relevant. Anyway the red part works in Chrome but not Internet Explorer (surprise surprise). I did some research which says that .setattribute is not allowed in IE. How can I change the red code to create links for the relevant records which works in IE? Thank you for your help Code:
function displaymember() {
var d = new Date();
var curr_month = d.getMonth();
curr_month++;
if (curr_month < 10) curr_month = "0" + curr_month;
var curr_year = d.getFullYear();
for (i = 0; i < x.length; i++) {
membershipstatus = (x[i].getElementsByTagName("membership_status")[0].childNodes[0].nodeValue);
name = (x[i].getElementsByTagName("name")[0].childNodes[0].nodeValue);
body = (x[i].getElementsByTagName("body_type")[0].childNodes[0].nodeValue);
ethnicity = (x[i].getElementsByTagName("ethnicity")[0].childNodes[0].nodeValue);
sex = (x[i].getElementsByTagName("sex")[0].childNodes[0].nodeValue);
seeking = (x[i].getElementsByTagName("seeking")[0].childNodes[0].nodeValue);
date = (x[i].getElementsByTagName("date_joined")[0]);
month = (date.getElementsByTagName("month")[0].childNodes[0].nodeValue);
year = (date.getElementsByTagName("year")[0].childNodes[0].nodeValue);
newa = document.createElement("a");
aIdName = "my" + i + "a";
ahref = "#";
aclick = "show(" + i + ")";
newa.setAttribute("id", aIdName);
newa.setAttribute("href", ahref);
newa.setAttribute("onclick", aclick);
newa.innerHTML = name + " | " + body + " " + ethnicity + " " + sex + " with " + membershipstatus + " membership seeks " + seeking + "<br/>";
if (curr_month == month && curr_year == year) {
document.getElementById("member").appendChild(newa);
}
}
}
im trying to create a script for greasemonkey (tried getting help from their discussion forums, but no one ever answers), but its still written in javascript. so here is what im trying to do. Ive got a dynamically created division that aligns to the right of the browser window. Now im trying to put links inside it as you normally would with like a document.write statement or other methods. The only problem is, any method i try wont work for me. heres my code, maybe someone could give me some things i could try. Code: function QuickLinks()
{
var body = document.body;
var div2 = document.createElement("div");
div2.setAttribute('class','QL');
div2.setAttribute('style','background-color: #692510;width: 200px;height: 500px;top: 2cm;position: absolute;right: 5px;z-index: 4;');
var links = document.createTextNode("where i want my links"); //now with that statement it just writes text, ive tried document.write and many other methods and nothing seems to work.
div2.appendChild(links); //this just inserts the links into the div.
body.appendChild(document.createElement('br'));
body.appendChild(div2);
}
QuickLinks();
Disclaimer 1: I am not a programmer, just a curious designer, so please take that into consideration in your replies. Disclaimer 2: Despite all advices against it, I couldn't find a better solution to my website than using iFrame Disclaimer 3: Before asking for help, I researched *several* forums and although I found people discussing similar issues, I was not successful at adapting their solutions to my needs. Gentlemen, I need your help implementing a method to intercept and redirect external links to a dynamic iframe. By "dynamic" iframe I mean an iframe whose SRC would be filled up in accordance to the external URL being intercepted and that it would resize its HEIGHT accordingly in order to avoid scroll bars. The function for resizing the iframe id="child" is already correctly implemented like so: Code: <script language="JavaScript">
<!--
function calcHeight()
{
//find the height of the internal page
var the_height=
document.getElementById('child').contentWindow.
document.body.scrollHeight;
//change the height of the iframe
document.getElementById('child').height=
the_height;
}
//-->
</script>
and the call Code: <iframe src="/main/index.php" width="100%" onLoad="calcHeight();" height="1" marginheight="0" marginwidth="0" scrolling="no" frameborder="0" id="child"> This what I have going on: - index.html => contains some content and the iframe id="child" - childpage1[...N].php => several PHP pages which I do not want to show up outside of the parent "index.html". These pages use clean URLs from CMS such as "http://mydomain.com/pages/this-is-a-child-page/" Users might click on external links from search engines, for instance, about an specific page such as "http://mydomain.com/pages/this-is-child-page-7/" which obviously would load the page "orphaned", outside "index.html" and that is exactly what I am trying to avoid. Based on what I have researched so far, the best way (please, correct me if I'm wrong) to deal with this would be implementing a test condition on the header of the PHP child pages to verify if they are on "top" or not (if they are already inside the "parent" object "index.html"). If FALSE, the page would load normally, if TRUE, a variable should be created to store the URL of the requested page and passed through the link to the page "index.html" which would be immediately called. In "index.html" there would be a script to collect the variable sent through the link (something like "http://mydomain.com/?var=http://mydomain.com/pages/this-is-child-page-7/") and break the text string apart, store a portion of PATHNAME (in this case, "/pages/this-is-child-page-7/) and use it to replace the current SRC of iframe id="child". Probably, there would have to be another testing function in this script to compare the variable passed from the "orphaned" PHP page against the current value of SRC in iframe id="child" to determine if any action is actually required. This "replacement" function would be called onLoad and if tested true would run and refresh the page with the proper value in the iframe SRC. All this should be accomplished while still making the iframe HEIGHT dynamically adjustable and show a "clean" URL in the browser, such as "http://mydomain.com". The potential issues I foresee is an infinite loop due to two onLoad queries (one for SRC, another for HEIGHT) in the parent and child objects, which might required a merge into a single script. As you can tell, I have an idea of what needs to be done but not a clue on how to get it done. Any help would be greatly appreciated. Thanks, Hi All, i know how to create a dynamic form or DIv ..but what i do not know is how to create a dynamic form/ or div into a previous dynamic one.. i need basically to see 5 dynamic forms / DIV in cascade where each one trigger the one coming after.. For what i need that : i have my user inserting information on the level 1. let say Copagny info 2- then he will be asked if he wants to add a sub level information ( subform) for that compagny or even many subforms at the same level .. and so on... 3- those sub level ( subforms ) can also call their respective subforms.. Any idea how to design this ? thanks This is what I have: http://page-test.co.uk/js-test.html ..and it works exactly how I want it to, but I need it to work by doing these two things: (a) If you see in the change_button function, I have hard coded the 'name_can_vary' name element. I need to do it so this isn't hard coded (so it can work on any page/form). (b) I don't want to change any of the HTML, and I only want to change the code used in the change_button function (otherwise I will need to change many pages). Thanks in advance. i have a link that references: <a href="My_Video.asx">video</a>. when you click, video will open in the "windows media player" and the parent window goes blank. how can i prevent the parent window from going blank? thank you for help julio Hi Guys I have been trying to implement a way of using `onclick` to fill out a form field, with a Value assigned by a clickable rollover image. So i have a image rollover of a PC, i give the PC a Value? ID? of `PC No34` When the image is clicked it updates its Value of PC No34 to a Form text field which is named `pcid` the Form is on the same page as the PC rollover image. I have been trying most of the day but not getting it. Pls help Thanks for any help with this Willo With input box if you type something and refresh the page, the previous words that you typed in will be filtered and be display in a scroll down form in which you can click it. My question is, when I click the input type is it possible to scroll down, and display values that comes from a database? It should also filter the scroll down results. If it's possible I don't know how to do it. I tried googling but I can't find an explanation on how to do it. Thanks. <input type="text" value="" onclick=""> I sometimes see that some people use this expression: event = event || window.event Why people need to do this? What does it mean? Hi I have a requirement....I have a timer on a page. If the user leave the page (mouse goes off of that page) the timer starts and continues...and when the user comes into that page(mouse over that page) the timer goes off/STOP....Is this can be done?? using javascript??? pls help... i have a checkbox: Code: <input type="checkbox" id="my_checkbox" name="option2" value="Check" checked>Check i want to add an event to it so that i do something to a dom element when it is checked and when it is not checked.What is the event and how can i get its status? I was testing a required entry form, and i'm stuck. Code: <html>
<head>
<script type="text/javascript">
function validate_required(field,alerttxt)
{
with (field)
{
if (value==null||value=="")
{
alert(alerttxt);return false;
}
else
{
return true;
}
}
}
function validate_form(thisform)
{
with (thisform)
{
if (validate_required(email,"Username must be filled out!")==false)
{username.focus();return false;}
}
}
</script>
</head>
<body>
<form action="submit.htm" onsubmit="return validate_form(this)" method="post">
Username: <input type="text" name="username" size="20">
<input type="submit" value="Submit">
</form>
</body>
</html>
i have this so far. i want to add a password part. i know i would take Code: Password: <input type="text" name="password" size="20"> and put it underneath the username part in the codes., but i don't know to do the rest, with the error message poping up. hello, Im trying to write a program when the user clicks on the button, the textbox should display "how are you ". This is what I tried : <html> <head> <title>"Click"</title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> </head> <body> <p> <input name="text1" type="text" id="text1" value="textbox 1" onFocus="this.style.background ='yellow'" onBlur="this.style.background='white'"> </p> <p> <input name="text2" type="text" id="text2" value="textbox 2" onFocus="this.style.background = 'yellow'" onBlur="this.style.background='white'"> </p> <p> <button onclick="textbox1.value="how are you">Click Me!</button> </p> </body> </html> |
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