JavaScript - Accessing An Array Entry's Item

Hi Guys,

I am trying to make a function that will search for a substring, in this case 'http://instagr.am/p/' within a text area on a form then add '[embed]' & '[/embed]' tags around it.

I have currently got the following code

Code:

<script type='text/javascript'> 
	function show_alert() {
		str = formname.elements['inputid'].value;
		arr = (str.split(' ') + '<br />'); 
		jQuery.each(arr, function() {
			if (arr.indexOf('http://instagr.am/p/') >= 0) {
				alert('An http://instagr.am/p/ link has been found');
				//alert('It is entry ... in the array');
				//Then edit the entry 
			}
		}
		);
	} 
</script>

This breaks the contents of the textarea (at spaces) into an array then finds any entries with 'http://instagr.am/p/' in them (could be 'http://instagr.am/p/29fdghHdv').

Once it has found any and all of these entries it will add an '[embed]' code to the beginning and an '[/embed]' tag at the end.

Example...

http://instagr.am/p/vuHdeyfa2
is converted to:
'[embed]http://instagr.am/p/vuHdeyfa2[/embed]'

Then the changes must reflected in the textarea input

"formname.elements["textareaid"].value = editedstring;


Thankyou for your assistance.

Hi Peers,

i have a Drop down list with 10 choices (skillset).
users must choose one skillset and the corresponding level (beginer/intermediate/master). ( they have to do this 10 times for all the sillsets)

what i want is :


1 - i need to show up only one record (dropdowanlist) with level
then have a button to add new skill and level if required


2- then when they choose the 1st skill from the dropdown , this one will not show up on the 2nd choice dropdown.

is it possible

any help ?

thanks guys

I'm writing a program that involves a network of interconnected nodes (or simply objects in my example below). It depends on being able to access properties of an object's linked objects (a bit oddly worded, sorry)...

Problem is I'm not sure how to properly access those properties... see below please.

<script>

//This is an example of a problem im having in my own code...
//I want to access the name of the object within the links array wintin the object...

var objA = {name: "Object A", links: [objB, objC]};
var objB = {name: "Object B", links: [objC, objD, objE]};
var objC = {name: "Object C", links: [objB]};
var objD = {name: "Object D", links: [objE]};
var objE = {name: "Object E", links: [objD]};

//ex: I want to access the name of Object A's first link...
console.log(objA.links[0].name);

</script>

I'm hoping to get "Object B"...
But instead I get: TypeError: Result of expression 'objA.links[0]' [undefined] is not an object.
Is there another way around this? Any thoughts are appreciated.

Hello,

I have a multi-dimensional object, derived from JSON returned by the Foursquare API. The object has the following structure (as printed using a print_r type method from http://www.openjs.com/scripts/others...hp_print_r.php

PHP Code:
    '0' 
        'id' => "27110xxx"
        'created' => "Sun, 11 Apr 10 15:09:45 +0000"
        'timezone' => "America/New_York"
        'user' ...
            'id' => "48xxx"
            'firstname' => "Barry"
            'lastname' => "xxx"
            'photo' => "http://playfoursquare.s3.amazonaws.com/userpix_thumbs/4abb5bxxxxxx.jpg"
            'gender' => "male"
        'display' => "xxxx. @ [off the grid]"
    '1' ...
        'id' => "2538xxxx"
        'created' => "Wed, 07 Apr 10 13:24:41 +0000"
        'timezone' => "Europe/London" 


Could anyone tell me the best way to access its elements? I have this so far which gets the required values, but I want to preserve the order ie. get the data from the first element in the object first, then move to the next - each element represents a user so I want to keep their data separate.

PHP Code:
/* This is a custom function which has the same function as print_r */
    function dump(arr,level) {
        
        var firstName, lastname, geolat, geolong, photo;
        
        var dumped_text = "";
        if(!level) level = 0;
        
        //The padding given at the beginning of the line.
        var level_padding = " ";
        for(var j = 0; j < level + 1; j++) level_padding += "    ";
        
        if(typeof(arr) == 'object') { //Array/Hashes/Objects 
            for(var item in arr) {
                var value = arr[item];
                
                if(typeof(value) == 'object') { //If it is an array,
                    dumped_text += level_padding + "'" + item + "'\n";
                    dumped_text += dump(value,level + 1);
                } else {
                    dumped_text += level_padding + "'" + item + "' => \"" + value + "\"\n";
                }
                
                if (item == 'firstname')   {
                    firstname = value;
                    document.write("First name: " + firstname + "<br />");
                    document.write(item);
                }
                
                if (item == 'lastname')   {
                    lastname = value;
                    document.write("Last name: " + lastname + "<br />");
                    document.write(item);
                }
                
                if (item == 'geolat') {
                    geolat = value;
                    document.write("Latitude: " + geolat + "<br />");
                    document.write(item);
                }
                
                if (item == 'geolong')  {
                    geolong = value;
                    document.write("Longitude: " + geolong + "<br />");
                    document.write(item);
                }
            }
        } else { //Stings/Chars/Numbers etc.
            dumped_text = "===>"+arr+"<===("+typeof(arr)+")";
        }
        return dumped_text;
    }
    
    var myObj = <?php echo json_encode($checkin); ?>;
    
    alert(dump(myObj));

Sorry for the bloated code, I normally work in Java and PHP so although I understand the theory, I haven't worked with objects much in JavaScript before. Any help would be much appreciated!

hy all, I am creating an accordion menu that when i press the " UNIT " tab, it opens up a list of " Chapters " tab, and when i press on any one of those chapters, a list of lessons opens up. Till now, i have managed to create all the appropriate lists, but in default, lessons and chapters are opened automatically, and the lessons elements when pressed do not scroll back up to the chapters parents. My html5 file:
Code:

<script type="text/javascript" src="jqueryjs.js"></script>
<script type="text/javascript" src="jqueryuiaccor.js"></script>
<script type="text/javascript">
    $(document).ready(function() {
        $('#accordion').accordion();
    });
</script>

<div id="container">
<div id="content">
<div id="sidebar">
        <ul id="accordion">
            <li>
                <a href="#recent" class="heading">Unit 1</a>    
                    <ul id="accordion">             
                        <li> <a href="#recent" class="heading">Chapter 1 </a> </li>
                                <ul id="accordion2">
                                    <li> Lesson 1 </li>
                                </ul>
                    </ul>
                    </li>
                    <li>
                    <a href="#recent" class="heading">Unit 2</a>    

                    <ul id="accordion">             
                        <li> <a href="#recent" class="heading">Chapter 1 </a> </li>
                                <ul id="accordion">
                                    <li> <a href="#recent" class="heading" role="tab" aria-expanded="true">Chapter 2 </a>
                                        <ul id="accordion">
                                            <li> <a href="#recent" class="heading">Lesson 1 </a></li>
                                        </ul>
                                    </li>
                                </ul>
                    </ul>
            </li>
        </ul>       
    </div>
    </div>
</div>

My acorjs.js file:

Code:

$(document).ready(function() {
    $('ul#accordion a.heading').click(function() {
        $(this).css('outline','none');
        if($(this).parent().hasClass('current')) {
            $(this).siblings('ul').slideUp('slow',function() {
                $(this).parent().removeClass('current');
                $.scrollTo('#accordion',1000);

            });
        } else {
            $('ul#accordion li.current ul').slideUp('slow',function() {
                $(this).parent().removeClass('current');
            });
            $(this).siblings('ul').slideToggle('slow',function() {
                $(this).parent().toggleClass('current');
            });
            $.scrollTo('#accordion',1000);

        }
        return false;

    });

});

Please HELP!

I'm trying to accessing the Parent window fom a sub window previously opened using window.open

I'm using firebug to t yand debug, and it shows that this DOM entry exists..
window.opener.location.href
But trying to access it gives "window opener is null" error



I've tried all these, and get the various errors tagged on the end...

Code:

<script language="JavaScript">
//alert(opener.location); // =  opener is null
//alert(opener.location.href); // =  opener is null
//alert(parent.location); // = uncaught exeption - could not convert to javascript argument arg 0
//alert(parent.location.href); // = Permission denied to get property Location.href
//alert(parent.opener.location); // = uncaught exeption - could not convert to javascript argument arg 0
//alert(parent.opener.location.href); // = Permission denied to get property Location.href
//alert(parent.window.opener.location.href); // = Permission denied to get property Location.href
//alert(parent.window.opener.location.href); // = Permission denied to get property Location.href
//alert(window.opener.location); // = window opener is null
//alert(window.opener.location.href); // = window opener is null
//alert(window.parent.location); // = uncaught exeption - could not convert to javascript argument arg 0
</script>

driving me crazy! Anyone have a solution?

i have this code:
PHP Code:
<?php
foreach ($freechat_list as $r)
{
     $uniqueCode = substr($r,0,12);
     $id = substr($r,13);
     $blocked_record = RcBlockListTablePeer::isBlocked($id,$requestor_id);
     ?>                                 
     <a href="#" id="profilelink" name="profilelink"  onClick="return viewornot(<?php echo $id."/".$blocked_record; ?>)"><?php echo $uniqueCode; ?></a>
}

then i have my JS:
[CODE]
thank you all but i am totally confused now...here is my full code:
<?php
foreach ($freechat_list as $r)
{
$uniqueCode = substr($r,0,12);
$id = substr($r,13);
$blocked_record = RcBlockListTablePeer::isBlocked($id,$requestor_id);
?>
<a href="#" id="profilelink" name="profilelink" onClick="return viewornot(<?php echo $id."/".$blocked_record; ?>)"><?php echo $uniqueCode; ?></a>
}
my JS:
Code:

    function viewornot(id)
    {
       alert(id);
    }

alert(id) only gives me the id but in my href i concatenated it with blocked_record: viewornot(<?php echo $id."/".$blocked_record; ?>)

please help?

Hello, I have a simple form with simple validation. I am just playing around a bit with forms and don't really have concrete knowledge.

What I have done is created a form. Asking for first name, last name, age and email. When the user clicks the submit button I want 2 functions to run, the first checking the input is correct and also making sure all fields have a value.

Once everything is checked and is O.K I want to go into another function which sends all this information to an array one by one. I am having difficulty accessing each individual input tag. I could achieve what I want to do, but it will take double the lines of code because each input has a different 'name'. So, what I am trying to do is access the input tags the same as you would do an array. Here is my code:

HTML:
Code:

<form name="regForm" id="form">
	 <fieldset>
		 <legend>Real Heroes - Registration Form</legend>
	
	 <p>First Name:<input type="text" size="30" maxlength="20" name="txtFirstName" /></p>
	 <p>Last Name:<input type="text" size="30" maxlength="20" name="txtLastName" /></p>
	 <p>Age:<input type="text" size="30" maxlength="3" name="txtAge" /></p>
	 <p>Email Address:<input type="text" size="30" maxlength="50" name="email" /></p>

	 <p><input type="button" value="Submit Registration" name="butChkForm" onclick="callFuncs_onclick()" />
		<input type="reset" value="Reset" name="resetForm" /></p>
</fieldset>
</form>

JavaScript:
Code:

//CALLING THE FORM SCRIPTS//
function callFuncs_onclick()
{
	 chkForm_onclick();
	 creatingDatabase_onclick();
}


//**************FORM VALIDATION***************//

function chkForm_onclick()
{
	 var theForm = document.regForm;
	 if (theForm.txtFirstName.value == "" || theForm.txtLastName.value == "" || theForm.txtAge.value == "" 
		 || theForm.email.value == "")
	 {
		 alert("Please complete all of the form.");
		 if (theForm.txtFirstName.value == "")
		 {
			 theForm.txtFirstName.focus();
		 }
		 if (theForm.txtLastName.value == "")
		 {
			 theForm.txtLastName.focus();
		 }
		 if (theForm.txtAge.value == "")
		 {
			 theForm.txtAge.focus();
		 }
		 if (theForm.email.value == "")
		 {
			 theForm.email.focus();
		 }
	 }
	 else if (isNaN(theForm.txtAge.value))
	 {
		 alert("That is not valid input for this field. Please re-enter your age.");
		 theForm.txtAge.focus();
	 }
	 
	 else
	 {
	 alert("Thank you for completing the form, " + theForm.txtFirstName.value);
	 }
}

function creatingDatabase_onclick()
{
	 var form = document.regForm;
	 var index = form.input[0].value;
	 alert(index);
}

I'm not quite sure where I am going wrong. Please note that these functions really labour the point, I know I have way too many lines of code but I am still very amateur with JS.

Thank you for any help/information.

Kind Regards,

LC.

Hello,

I am working on a project using HTML and javascript to allow the user to choose a vehicle from a drop down menu, then load a new page showing some information about this vehicle. The information is stored in an Excel file. I posted regarding this issue a while back and got an excellent response from Old Pedant (thanks again!) about using ActiveX - which has thus far worked perfectly. My initial condition was that I would only be using IE7+. However, my next idea was to be able to use it on an IPad (which I unfortunately do not own yet, making any kind of testing difficult) which I am fairly certain ActiveX won't work on. So, I was looking for any other method which would be similar.

Important note: this will not use the internet at all, all of these files will be available locally. There is a lot of material on running queries to servers, but I didn't think that would really apply here. It seems pretty clear that JS has difficulty accessing files client side (which I understand why completely), but I was hoping to find something that worked for the gray zone I'm currently working in since I'm not using servers at all.

I know that this is not really the intended use of HTML/JS, but I was hoping that by writing it as an HTML file, it'd be accessible to anyone with a browser. Some of my target computers have odd limitations (such as not being to download .exe files).

The code I based my original off of is shown below:

Code:

<script type="text/javascript">

var conn = new ActiveXObject("ADODB.Connection")
conn.Open ( 'Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\full\path\to\MyExcel.xls;Extended Properties="Excel 8.0;HDR=Yes;IMEX=1";)';

var sql = "SELECT * FROM [nameOfSheet$]";
var rs = conn.execute( sql )
while ( ! rs.eof ) 
{
    // just an example of dumping everything from the sheet out to the browser:
    for ( var f = 0; f < rs.fields.count; ++f )
    {
        document.write( rs.fields(f).value + "," );
    }
    document.write("<br>\n");
    rs.moveNext();
}

rs.close();
conn.close();
</script><script type="text/javascript">

var conn = new ActiveXObject("ADODB.Connection")
conn.Open ( 'Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\full\path\to\MyExcel.xls;Extended Properties="Excel 8.0;HDR=Yes;IMEX=1";)';

var sql = "SELECT * FROM [nameOfSheet$]";
var rs = conn.execute( sql )
while ( ! rs.eof ) 
{
    // just an example of dumping everything from the sheet out to the browser:
    for ( var f = 0; f < rs.fields.count; ++f )
    {
        document.write( rs.fields(f).value + "," );
    }
    document.write("<br>\n");
    rs.moveNext();
}

rs.close();
conn.close();
</script>

Thank you,
klarosa

Hey

is it possible to access javascript variables in an iframe src page from the parent page, or vice versa. How do you do this? What about the DOM?

thanks

i m trying to extract data from an xml file and display data on Google maps
but when i try to run my code

In IE - Access denied error is display (while accessing the xml file)
Mozilla - code is working fine but displays following error -
Error: xmlDoc.getElementsByTagName("lat")[1] is undefined
Source File: file:///I:/BE%20Project%20Data/coding/Myexample/exam2.html
Line: 48

HTML file-

<html>
<head>
<title>Google Maps JavaScript API v3 Example: Fusion Tables Layer</title>
<link href="http://code.google.com/apis/maps/documentation/javascript/examples/default.css" rel="stylesheet" type="text/css" />
<style type="text/css">
html { height: 100% }
body { height: 100%; margin: 0px; padding: 0px }
#map_canvas { height: 500px;width: 800px }
</style>
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>
<script type="text/javascript">
function initialize()
{
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","agridata.xml",false);
xmlhttp.send();
xmlDoc=xmlhttp.responseXML;
var latlng = new google.maps.LatLng(48.75028,-94.91667);
var mapOpts = {
zoom: 5,
center: latlng,
mapTypeId: google.maps.MapTypeId.ROADMAP,
};
var map = new google.maps.Map(document.getElementById("map_canvas"),mapOpts);

var l1=xmlDoc.getElementsByTagName("lat")[1].childNodes[0].nodeValue;
var l2=xmlDoc.getElementsByTagName("lng")[1].childNodes[0].nodeValue;

var pt = new google.maps.LatLng(parseFloat(l1), parseFloat(l2));
var marker = new google.maps.Marker({
position: pt,
map: map,
title: 'Just a simple marker'});
}
</script>
</head>
<body onload="initialize();">
<h1>output</h1>
<div id="map_canvas"></div>
</body>
</html>


XML file -
<?xml version="1.0"?>

<markers>

<marker>
<lat>52.09667</lat>
<lng>-173.50056</lng>
<state>Alaska</state>
<county>Aleutian</county>
</marker>

<marker>
<lat>48.75028</lat>
<lng>-94.91667</lng>
<state>Minnesota</state>
<county>Lake of woods</county>
</marker>


<marker>
<lat>52.09667</lat>
<lng>-173.50056</lng>
<state>Washington</state>
<county>Stevans</county>
</marker>

</markers>


do let me know the reason behind the undefined error and ACCESS DENIED error ... i have tried modification in the security setting of the browser but error is not solved yet ...

thks

I have developped a script in order to resize the height of a div on a web page in order to display it at least up to the size of the window. Here is the code:

function resize(){
var frame = document.getElementById("content");
var padding_top = parseInt(window.getComputedStyle(frame,null).getPropertyValue("padding-top"));
var padding_bottom = parseInt(window.getComputedStyle(frame,null).getPropertyValue("padding-bottom"));
var padding = padding_top + padding_bottom;
var bodyheight = document.body.scrollHeight;
var windowheight = window.innerHeight;
if (bodyheight < windowheight){
frame.style.height = windowheight - padding + "px";
}
}

It works well, but I was wondering why I am not able to get the padding-top and -bottom using these two instructions:

var padding_top = frame.style.paddingTop;
var padding_bottom = frame.style.paddingBottom;

The script runs but Firebug shows empty strings for both values. How come? Is there a bug in Firefox?

Thanks inadvance for your time and help.

What i have is a system where the amount of HTML lines is generated by php when the page loads. Each time has exactly the same set up except there names have an int added to them in accending order.

What i need is for them to pass a variable to the javascript function telling them what number they are, and the javascript then using this to access it to read and change information.

Is the line below correct for this task?

Code:

document.Purchase.(Tax+i).selectedIndex;

What I am trying to achieve, is a button that calls a function that changes the onclick attribute of that button, so that when it is clicked again, it resets the onclick attribute to call the default function. here is what the stripped down code looks like:
Code:

<html>
<head>
<script type="text/javascript">
function remove_prep(a){
a.value="cancel";
a.onclick="cancel_remove(this);";
}
function cancel_remove(a){
a.value="remove";
a.onclick="remove_prep(this);";
}
</script>
</head>
<body>
<input type="button" value="remove" onclick="remove_prep(this);" />
</body>
</html>

for some reason, it only fires once, after which it ceases to work properly.


thanks for the help this part of my code is killing me.

I have many examples within my page of the form:
Code:

<a id="L1" href="#" onclick="return showSpan();" onblur="return hideSpan();"><span> ... </span></a>

The page is styled so that hovering over the link displays the contents of the hidden <span> as a block without any javascript. I want this to work (that is display the span as a block) when the user tabs onto a link (and presses Return/Enter). When the user tabs away, it should hide the <span>.

My starting code looks like:
Code:

function showSpan() {
  var linkID = document.getElementById(this.id);
  var classList = linkID.getElementsByTagName('span');
  var divID = classList[0];
      divID.style.display = "block";
      return false;
} // function

with a similar function for hideSpan(),

Ultimately I would like to add these event handlers in the initialisation phase, which is why I have used a parameterless function.

Whenever I try this, I get an error that this.id does not exist.

How can I attach these event handlers?

John Rostron