JavaScript - Is There Any Dom Event To Monitor Loading Of Individual Nodes?

I am trying to write a little Greasemonkey script to insert links to open mp3s in the Google Player. It is supposed to insert "(play)" next to these links. (play) is a span element consisting of a text node "(", a link/"a" element, and another text node ")".

However, instead of inserting these new links next to each old link, it is putting them all in a row next to the very first mp3 link!

For example, if there are 3 mp3 links found on the page, the following is inserted next to the first links: (play(play(play)))

When the loop iterates over the whole array (i < links.length), the browser hangs until Firefox's slow script notification pops up and I click "Stop script"; then I see the nested links all next to the first mp3 link.

Additionally, the url itself is strange. Just looking at it, you'd think I was running a recursive function, but I'm not! The URL with a limited for loop (x < 21): http://www.google.com/reader/ui/3523697345-audio-player.swf?audioUrl=http://www.google.com/reader/ui/3523697345-audio-player.swf?audioUrl=http://www.google.com/reader/ui/3523697345-audio-player.swf?audioUrl=http://www.google.com/reader/ui/3523697345-audio-player.swf?audioUrl=http://www.google.com/reader/ui/3523697345-audio-player.swf?audioUrl=http://www.google.com/reader/ui/3523697345-audio-player.swf?audioUrl=http://www.google.com/reader/ui/3523697345-audio-player.swf?audioUrl=http://www.hackerpublicradio.org/eps/hpr0924.mp3&autoPlay=true&autoPlay=true&autoPlay=true&autoPlay=true&autoPlay=true&autoPlay=true&autoPlay=tru e.

Here is the script. I have been using the site http://www.hackerpublicradio.org for my testing.
Code:

var links = document.getElementsByTagName('a');
for (var i=0; i < links.length; i++) {
	var x = links[i];
	var url=x.href;
	if (url.search(/.*\.mp3/i) != -1) {
		var plink = document.createElement("a");
		plink.href = "http://www.google.com/reader/ui/3523697345-audio-player.swf?audioUrl=" + url + "&autoPlay=true";
		plink.target = "_blank"; //open in new tab
		plink.appendChild(document.createTextNode("play"));
		
		var pspan = document.createElement("span");
		pspan.style.fontSize = "90%";	
		var openb = document.createTextNode("(");
		var closeb = document.createTextNode(")");
		pspan.appendChild(openb);
		pspan.appendChild(plink);
		pspan.appendChild(closeb);

		x.parentNode.insertBefore(pspan, x.nextSibling); 
	}
}

No errors are showing up in the console. I've only tested it in Firefox 10. Please help me figure out where I'm going wrong!

So there is this string i need to parse as xml:
Code:

<station><code>GB0923A</code><city>ABERDEEN</city><population>215.000</population><component><name>Nitrogen dioxide (air)</name><unit>_micro;g/m3</unit></component><component><name>Nitrogen oxides (air)</name><unit>_micro;g NO2/m3</unit></component></station>

Now what I do is:
-use this function to create xml doc from string
Code:

function stringToXML(text){
if (window.DOMParser)
{
   parser=new DOMParser();
   xmlDoc=parser.parseFromString(text,"text/xml");
}
else // Internet Explorer
{
  xmlDoc=new ActiveXObject("Microsoft.XMLDOM");
  xmlDoc.async="false";
  xmlDoc.loadXML(text);
} 
return xmlDoc;
}

-display it in that if statement:
Code:

if (xmlhttp.readyState==4 && xmlhttp.status==200){
        var response= xmlhttp.responseText;
	xmlDoc= stringToXML(response);
	var text="";
	text= text+ xmlDoc.getElementsByTagName("city")[0].nodeValue + "<br/>";
	text= text+ xmlDoc.getElementsByTagName("code")[0].nodeValue + "<br/>";
	text= text+ xmlDoc.getElementsByTagName("population")[0].nodeValue + "<br/>";
	document.getElementById("test").innerHTML = text;
	document.getElementById("loading").style.display = "none";
}

the stirng shown at the beggining is passed to "response" (var response= xmlhttp.responseText.
Now for some reason all 3 values displayed are null...
I am trying to figure why for last 2hrs but i cnt see any reason why they shouldnt be the actual values of nodes in the string...
Any help would be appreciated.

I have written my application by specifying all dimensions in pixels. If used on a monitor with less resolution, it causes the screen to have to scroll left or right. However, it seems to be the same top to bottom.

In any event, I was wondering if there is a way to specify pixels maybe through a function or something, where the client's monitor resolution can be detected, and then, if I specify a size as 100px, I can change that to something like pixCount(100).

Hi forum,

I am trying to attach an event to a dynamically produced button, and then use
stopPropagation and preventDefault.
Code:

function chapter12_nodeOne() {
    
    //create an element
    var element = document.createElement('input');
    //set some attributes
    element.setAttribute('type', 'button');
    element.setAttribute('value', 'submit');
    element.setAttribute('id', 'myBtn');
    //appendd the element into a DIV
    document.getElementById('myDiv').appendChild(element);
    //uses EventUtil to attach an event listener
    EventUtil.addHandler(element, 'click', function() {
        alert('event attached');
    });

    var flag = confirm('prevent default behavior of button?');
    if (flag) {
        var el = document.getElementById('myBtn');/////////////////////////(1)
        var ev = el.onclick;
    }
}

var EventUtil = {
    addHandler: function(element, type, handler) {
        //check if the element and the browser support DOM Level 2 event attachment
        //if the user is not browsing with IE
        if (element.addEventListener) {
            element.addEventListener(type, handler, false);
        }
        //if user is browsing with IE
        else if (element.attachEvent) {
            element.attachEvent("on" + type, handler);
        }
        //if user is using a browser that only supports DOM Level 0 event attachment 
        else {
            element["on" + type] = handler;
        }
    },

    removeHandler: function(element, type, handler) {
        //check if the element and the browser support DOM Level 2 event attachment
        //if the user is not browsing with IE
        if (element.removeEventListener) {
            element.removeEventListener(type, handler, false);
        }
        //if user is browsing with IE
        else if (element.detachEvent) {
            element.detachEvent("on" + type, handler);
        }
        //if user is using a browser that only supports DOM Level 0 event attachment 
        else {
            element["on" + type] = null;
        }
    }
};

But when debugging I see under el on the line marked with (1) that the onclick event is null. What am I doing wrong?!
PS:the event is attached, when I click on the button I get an alert message

is it possible to capture the control.event or element.event that was fired to invoke the onbeforeunload event.

for example, if a button is clicked and it causes the onbeforeunload event to fire can i determine which button was clicked.

thanks

I'm developing a simple game that involves a system of interconnected nodes with unidirectional travel between nodes (similar to the circulation system!). The goal of the game is to get from a starting node to an ending node, which can be a variable number of nodes away.

The program picks a random starting point, then randomly chooses one of its connecting nodes (cNodes) and pushes it onto a pathArray. A cNode is randomly chosen from this new node and it is pushed onto the pathArray. This continues for a designated number of turns, thus generating a pathArray (invisible to the player). The last element in the pathArray is the endNode and the goal of the puzzle.

At each node the player is given two options of travel (though there may be more than two ways to go). One of these options MUST be the correct way if the player has not deviated from the path up until that point. If the player has deviated, this option can be any cNode. The other node is any cNode that does not lead to the endNode.

The following code contains a simplified list of nodes that represents the content in my game. The function, however, is taken word for word. In this snippet, the pathArray & startNode have already been generated and I am trying to resolve how to assign "nodeChoice" as either the correct direction of travel (for a player on the correct path) or any random cNode (for a player who has deviated from the path). Keep in mind that the pathArray and cNodes lengths can be any size.

Code:

<script>

//NODES:
var nodeA = {name:"A"};
var nodeB = {name:"B"};
var nodeC = {name:"C"};
var nodeD = {name:"D"};
var nodeE = {name:"E"};
var nodeF = {name:"F"};
var nodeG = {name:"G"};
var nodeH = {name:"H"};
var nodeI = {name:"I"};
var nodeJ = {name:"J"};
var nodeK = {name:"K"};
//An array of all nodes in the system:
var systemArray = [nodeA, nodeB, nodeC, nodeD, nodeE, nodeF, nodeG, nodeH, nodeI, nodeJ, nodeK];

//Connecting Nodes (cNodes):
//(uni-directional, but cyclical)
nodeA.cNodes = [nodeB, nodeC];
nodeB.cNodes = [nodeD, nodeE, nodeF];
nodeC.cNodes = [nodeF, nodeG];
nodeD.cNodes = [nodeI, nodeH];
nodeE.cNodes = [nodeJ];
nodeF.cNodes = [nodeK];
nodeG.cNodes = [nodeK];
nodeJ.cNodes = [nodeA];
nodeK.cNodes = [nodeA];
nodeI.cNodes = [nodeA];
nodeH.cNodes = [nodeA];

//The path chosen (generated from code not included here)
var pathArray = [nodeA, nodeB, nodeE, nodeJ];

//nodeChoice will represent a cNode from any given node
var nodeChoice;

//chooseNode is supposed to assign nodeChoice the next element in pathArray if the player on on the right path (if at nodeB, nodeChoice = nodeE).
//However, if the user has taken a different path, its cNodes will not be in pathArray in which case a random cNode is assigned to nodeChoice
function chooseNode(_node) {
	//check each cNode to see if any are in pathArray
	for (var j = 0; j < _node.cNodes.length; j++) {
		//if a cNode is in pathArray, then we know to assign it nodeChoice...
		if (_node.cNodes[j] in pathArray) {
			nodeChoice = _node.cNodes[j];
			console.log("choiceNode CORRECT: " + nodeChoice.name); //(for debugging purposes only)
		}
		//...otherwise don't do anything in this forLoop/ifStatement
	};
	//if by this point nodeChoice is still undefined, meaning none of the current node's cNodes are in pathArray, assign it any one of its cNodes.
	if (nodeChoice == undefined) {
		nodeChoice = _node.cNodes[Math.floor(Math.random()* _node.cNodes.length)];
			console.log("choiceNode INCORRECT: " + nodeChoice.name);//(for debugging purposes only)
	};	
};

//Runtime:

chooseNode(nodeB);
//Result should be only nodeE.name since nodeD is not in the pathArray...
console.log(nodeChoice.name);

</script>

...however, nodeChoice is assigned either D, E or F randomly and we are given the troubleshooting statement "choiceNode INCORRECT: D (or) E (or) F", indicating that the if-in statement is always ignored.

I know that the if-in statement doesn't work but am not sure how else to write it so that each cNode is compared the each element in pathArray, both of which can be of variable lengths...

Hello all,

I have the following code to load a new html page into the 'new content' div once the user scrolls to the bottom of the page.

It all works fine. No problems, except I would like it to pause for a moment whilst it is loading, and show a loading box div at the bottom of the screen as it loads the new content, just to give some positive feedback for the user.

So the new div would sit in a fixed position at 'bottom:0px;' and have a loading image inside it.

Is this easy to do? I am new to javascript so bear with me

Code:

alreadyloading = false;
nextpage = 2;
 
$(window).scroll(function() {
    if($(window).scrollTop() + $(window).height() == $(document).height()) {
        if (alreadyloading == false) {
            var url = "page"+nextpage+".html";
            alreadyloading = true;
            $.post(url, function(data) {
                $('#newcontent').children().last().after(data);
                alreadyloading = false;
                nextpage++;
            });
        }
    }
});

The 'new content' is a div which is at the bottom of the page and is where the new content loads to!

Thank you very much

I have a ondrag event handler and in that I am trying to retrieve e.ClientX but it always return 0 in Mozilla. Works fine in IE though.

How can retrieve the clientX and clientY in ondrag event?

I have a code that checks individual checkboxes with a value in my group checkbox. Works great except When my group checkbox value ="955, 957,1956" it checks box 956 as well. How would I fix that?

<!DOCTYPE html>
<html>
<head>

</head>
<body>
///----------GROUP CHECKBOXES---------------------///
1,2,3<input type="checkbox" value="1,2,3" onclick="checkBox(this)"/>
4,5,6<input type="checkbox" value="4,5,6" onclick="checkBox(this)"/>
7,8,9<input type="checkbox" value="7,8,9" onclick="checkBox(this)"/>
955,957,1956<input type="checkbox" value="955,957,1956" onclick="checkBox(this)"/>


///----------Individual Checkboxes------------///
<div id="targets">
1<input type="checkbox" value="1"/>
2<input type="checkbox" value="2"/>
3<input type="checkbox" value="3"/>
4<input type="checkbox" value="4"/>
5<input type="checkbox" value="5"/>
6<input type="checkbox" value="6"/>
7<input type="checkbox" value="7"/>
8<input type="checkbox" value="8"/>
9<input type="checkbox" value="9"/>
955<input type="checkbox" value="955"/>
956<input type="checkbox" value="956"/>
957<input type="checkbox" value="957"/>
1956<input type="checkbox" value="1956"/>

</div>
<script type="text/javascript">
function checkBox(box){
var cbs=document.getElementById("targets").getElementsByTagName("input")
if (box.checked){
for (i=0;i<cbs.length;i++){
if(cbs[i].type=="checkbox"&&box.value.indexOf(cbs[i].value)!=-1){
cbs[i].checked=true;
}
}
} else {
for (a=0;a<cbs.length;a++){
if(cbs[a].type=="checkbox"&&box.value.indexOf(cbs[a].value)!=-1){
cbs[a].checked=false;
}
}
}
}

</script>
</body>
</html>

I want to use some scripts from http://www.dynamicdrive.com

Most of them require pasting script in both the HEAD and BODY of the page.

Now, the way my WordPress is set up (Egesto theme), is in individual pages, which I cannot find any way to edit their HEAD or BODY. The only HEAD and BODY sections I see are in the Editor section, where I can edit the overall header.php, but that effects every page, I think.

Anyways, does anyone know how I can solve this?

Thank you.

I am Gururaj.
I have written a form in HTML which contains username,lastname,email,password and submit.
I have written a javascript to validate this form [validate(username,lastname,email,password)].
On submit this javascript function will be called and hence form get validated.
I am passing all the arguements(username,lastname,email and password) to the javascript function..


Is it possible to make me a code such that it should call an individual function for each field in the form.for ex:if i have not entered username, last name in the form and attempt to submit, only username arguement should be passed to the function as it comes first in the form.
In other sense i want to validate individual text field validation of my form.


So can anybody help me.It will be very needful to me.

So I am using JavaScript to make a table on a page and what I want to do is have the JavaScript create the table, and then allow the user to fill it with data. I have been able to make the JavaScript create the table, my question is how to reference the cells in my script that adds data to the cell. I want the users to be able to click a button an add data into different cells so i figured giving them each an Id and referring to that Id in the button is the best way to do it.

How can I edit my code to give each cell a different Id? Or is there a better way of doing this?
My table code looks like this (i have filled it with random data so it is not just a blank table).

<code>
<script type="text/javaScript">
window.onload = fnInit;

function fnInit()
{
// Declare variables and create the header, footer, and caption.
var oTable = document.createElement("TABLE");
var oTHead = document.createElement("THEAD");
var oTBodyam = document.createElement("TBODY");
var oTBodypm = document.createElement("TBODY");
var oTFoot = document.createElement("TFOOT");
var oCaption = document.createElement("CAPTION");
var oRow, oCell;
var i, j;

// Declare stock data that would normally be read in from a stock Web site.
var heading = new Array();

heading[0] = "";
heading[1] = "Monday";
heading[2] = "Tuesday";
heading[3] = "Wednesday";
heading[4] = "Thursday";
heading[5] = "Friday";
var block = new Array();

block[0] = "8:30";
block[1] = "9:55";
block[2] = "11:20";
block[3] = "12:45";
block[4] = "2:10";
block[5] = "3:35";
block[6] = "5:00";
block[7] = "6:30";
var stock = new Array();

stock[0] = new Array(block[0],"88.625","85.50","85.81","99.54","55.46");
stock[1] = new Array(block[1],"102.75","97.50","100.063","49.54","55.46");
stock[2] = new Array(block[2],"56.125","54.50","55.688","99.54","55.46");
stock[3] = new Array(block[3],"71.75","69.00","69.00","99.54","55.46");
stock[4] = new Array(block[4],"71.75","69.00","69.00","99.54","55.46");
stock[5] = new Array(block[5],"71.75","69.00","69.00","99.54","55.46");
stock[6] = new Array(block[6],"71.75","69.00","69.00","99.54","55.46");
stock[7] = new Array(block[7],"71.75","69.00","69.00","99.54","55.46");

// Insert the created elements into oTable.
oTable.appendChild(oTHead);
oTable.appendChild(oTBodyam);
oTable.appendChild(oTBodypm);
oTable.appendChild(oTFoot);
oTable.appendChild(oCaption);

// Set the table's border width and colors.
oTable.border=1;
oTable.bgColor="lightslategray";

// Insert a row into the header and set its background color.
oRow = document.createElement("TR");
oTHead.appendChild(oRow);
oTHead.setAttribute("bgColor","lightskyblue");

// Create and insert cells into the header row.
for (i=0; i<heading.length; i++)
{
oCell = document.createElement("TH");
oCell.innerHTML = heading[i];
oRow.appendChild(oCell);
}

// Insert rows and cells into bodies.
for (i=0; i<stock.length; i++)
{
var oBody = (i<3) ? oTBodyam : oTBodypm;
oRow = document.createElement("TR");
oBody.appendChild(oRow);
for (j=0; j<stock[i].length; j++)
{
oCell = document.createElement("TD");
oCell.innerHTML = stock[i][j];
oRow.appendChild(oCell);
}
}
</code>

Hi everybody I have a problem

I want a header that is a slideshow and use lightbox for other images.
No I have this all working but not at the same time.

If I use this code in this order only the first script that is the lightbox script works.
PHP Code:
<script type="text/javascript" src="js/jquery.min.js"></script>
        <script type="text/javascript" src="js/pirobox.js"></script>
        <script type="text/javascript">
        $(document).ready(function(){
        $().piroBox({
              my_speed: 300, //animation speed
              bg_alpha: 0.5, //background opacity
              slideShow : 'true', // true == slideshow on, false == slideshow off
              slideSpeed : 3, //slideshow
              close_all : '.piro_close' // add class .piro_overlay(with comma)if you want overlay click close piroBox
              });
        });
        
        </script>
        <script src="http://code.jquery.com/jquery-latest.js"></script>
        <script src="js/jquery.cycle.all.min.js"></script>
        <script type="text/javascript">
        $(document).ready(function(){
           $('.slideshow').cycle({
              fx: 'scrollLeft',
              speed: 1000,
              timeout: 7000
           });
        });
        </script> 


If I use this code so I switched the order only the slideshow works:
PHP Code:
<script src="http://code.jquery.com/jquery-latest.js"></script>
        <script src="js/jquery.cycle.all.min.js"></script>
        <script type="text/javascript">
        $(document).ready(function(){
           $('.slideshow').cycle({
              fx: 'scrollLeft',
              speed: 1000,
              timeout: 7000
           });
        });
        </script>
<script type="text/javascript" src="js/jquery.min.js"></script>
        <script type="text/javascript" src="js/pirobox.js"></script>
        <script type="text/javascript">
        $(document).ready(function(){
        $().piroBox({
              my_speed: 300, //animation speed
              bg_alpha: 0.5, //background opacity
              slideShow : 'true', // true == slideshow on, false == slideshow off
              slideSpeed : 3, //slideshow
              close_all : '.piro_close' // add class .piro_overlay(with comma)if you want overlay click close piroBox
              });
        });
        
        </script> 


I also tried this: but then they both did not work

PHP Code:
        <script type="text/javascript" src="http://code.jquery.com/jquery-latest.js"></script>
        <script type="text/javascript" src="js/jquery.cycle.all.min.js"></script>
        <script type="text/javascript" src="js/jquery.min.js"></script>
        <script type="text/javascript" src="js/pirobox.js"></script>
        <script type="text/javascript">
        $(document).ready(function(){
                                   
           $('.slideshow').cycle({
              fx: 'scrollLeft',
              speed: 1000,
              timeout: 7000
           });
           
           $().piroBox({
              my_speed: 300, //animation speed
              bg_alpha: 0.5, //background opacity
              slideShow : 'true', // true == slideshow on, false == slideshow off
              slideSpeed : 3, //slideshow
              close_all : '.piro_close' // add class .piro_overlay(with comma)if you want overlay click close piroBox
              });
           
            });
        </script> 


Can you help me solve this problem so they both work?

I am trying to work out how to use Google Chrome DevTools to simulate a timeout on a JavaScript file on my site.

I can use the 'Toggle Device Mode' to introduce throttling but that doesn't target a specific script.

Is there a way to do this with DevTools?

I am using Chrome 38.