Hiding A Div If A Variable Is Empty ?

Sep 30, 2009

I'm using a Javascript gallery (runs on Prototype library) that populates a caption field if the user has entered a caption for an image.

I need a little bit of code to hide the caption's div entirely if the user hasn't entered a caption for a particular image (var 'caption' is empty).

It's the bottom-right white box below the image, you'll have to click over to the second page of the gallery (NEXT) to see an example of an empty one that I want to hide:


Here's the CSS:

Here's the HTML:

I'm sure this isn't that hard, but I've spent more time trying to get that caption box to hide than setting up the gallery.

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JQuery :: Hiding Empty Span - Ui-widget-header Class Appears To Be Stopping It From Hiding

Jan 30, 2010

I'm using the following css code which wrapped around a dynamically populated field;<span class="ui-widget-header platform ui-corner-all"></span>

When the span is empty I want to hide it, and I've used this jquery to do this.

However, the ui-widget-header class appears to be stopping it from hiding - if I remove this class it hides fine.

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Hiding A Whole Table Row If A Certain Cell Inside It Is Empty?

Feb 21, 2010

Is there a way of hiding a whole table row if a certain cell inside it is empty?

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JQuery :: Hiding Empty Form Option Fields - Working But Inelegant?

May 11, 2009

First post here - I am trying to hide options in a form select field if they are empty. The code below works...but even I know it must be a horrid way of doing it! Anyone care to tidy it up for me? I would learn much from the experience,


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JQuery :: Hiding Subset Of Form Fields (with Empty Values) Using Focusout Handler?

Feb 4, 2010

I have a contact info form with about 16 fields. I need to hide a subset of fields for address when the end user either (1) tabs out of the subset group, (2) clicks anywhere outside the subset field group.

I do not want to hide the fields when the end-user is tabbing within the subset of address fields, yet the focusout handler is triggered when it shouldn't be.


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Hide DIV If If Variable Is Empty

Aug 19, 2011

I'm developing a wordpress based site using custom fields. It is basically a database of company sites we serve hosted locally on our systems for our reference only.

The fields are manually inserted into the single.php file which outputs the variables typed into the text box in the "add new post" page.

For example <?php the_field('domain'); ?> outputs the domain such as ds02.jamies.local in plain text.

Here is a small excerpt of the page:


The div "post3" is basically a big box with a border and background. Inside that is the title for the box, then the php variable enclosed in a div "inside" underneath.

Now in most cases, we do not have all the information. There is around 40 boxes and if only 10 are filled in, its quite a headache scrolling past 30 empty boxes trying to find filled in one.

Is there a way, using simple javascript to simply hide those empty boxes?

My coding is quite poor, but im trying to learn. Ive tried this and it was a partial success on jsfiddle but nothing on the site itself


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JQuery :: Passing Variable Gives Empty String

Oct 5, 2011

I have this image gallery in which clients should be able to determine the order in which their images are shown. The sortable part works. Then I want to pass the new order to the next page called act_writeneworder.cfm (i am using coldfusion)
I just started with jQuery and it is driving me nuts:-) Each time I think I am having it well i am testing and the variable passed through gives an empty string.
My code:

<script type="text/javascript">
$(function() {
$( "#ulsortable" ).sortable();


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Empty Array Element Variable Type?

Oct 22, 2009

What type of variable is an empty array element? I thought it was undefined, but i noticed that they have different behavior than undefined does:

var r=Array(1);
var s=r.concat([0,"",null,undefined]);
alert (s.toSource()) //==="[, 0, "", null, (void 0)]"
typeof s[0] //==="undefined"
typeof s[4] //==="undefined"

As you can see, 0 and 4 both === undefined. Yet, they don't have the same toSource()...
Is this special type named anything specific? Or more importantly, can it be detected outside of an array as being distinct from undefined? I am thinking this would be the same type as ({}).nonProp ...
I guess the question is actually, "can you tell the difference between uninitialized and undefined"?

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Keep Getting An Empty Alert Box?

Mar 9, 2010

I have been working on this for a month now as an exercise (I am a beginner) and I am still having problems. Every time I get a user to fully validate all information I keep getting an empty alert box. Why is it showing up empty and not with a total amount? Im 95% sure my code is correct.


<script language="javascript" type="text/javascript">
//function to show province


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No Empty Fields / Get That?

Dec 19, 2011

I am building a registration page . If the user completes all the required field i load the info into the database but if there are missing fields I combined some javascript into php to display next to the empty field a note that it should be filled. This is my code...

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IE ResponseText Is Empty

Feb 24, 2011

I'm trying, to fill a table with data I receive from a Servlet. In Chrome everything works fine. But when I try the app on IE the responseText is allways empty. The following is my JS code (using prototype):

function updateToDeleteTable(){
var url = 'getDefHidConFechaInsercionMayor?plantacion_id='+$('plantacion_id').
options[$('plantacion_id').selectedIndex].value +


I know the servlet returns a correct text, because when I enter the request uri in a new IE tab it returns the appropiate html code.

Allso when I check the variable response in the IE JS debugger the resaponse of the servlet is 200 (OK). I realy can't think of anything I'm doing wrong, exept, that maybe there is a size limit for the responseText.

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Empty The Content Of A DIV ?

Jun 25, 2010

I am trying to empty the contents of a DIV.

Here is the HTML


When I run the following Javascript code, he adds text to the shoppingresults DIV, but I want it to remove the existing text.

[code]document.getElementById("shoppingresults").innerHTML = '';[/CODE

Is there a way for me to remove all the html from this DIV?

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Why Get A Response From Php Is Empty

Jul 3, 2010

Two ajax and php files are located in a domain. and, ajax is calling in another domain. Why get a response from php is empty? While not empty. Like the image attached.

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Empty Function Var's Like Php?

Nov 3, 2010

How can i do this in a JS function:PHP:

PHP Code:
function myfunk ($var1 = 'value') {


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Empty The Src In An Img Element?

Jan 5, 2011

Is there a way to empty the src in an img element?

Say I have <img src="ex.jpg" alt="ex"/>

Is there code to clear the src file?

Something like this?

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Aug 5, 2005

Is there a way to achieve in Firefox (and other browsers) what I achieve in
IE6 with the document.selection.empty()? I want to be able to empty the
selection every time the user clicks a certain area, thus making it
impossible to select any text in that area. Is there a way to clear the
text selection in Firefox?

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How To Check Textbox Empty Or Not

Oct 9, 2009

I creating a form, i want submit if it is not empty, how can i do it?

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How To Dynamically Empty A Table

Jan 29, 2011

I can add rows to a table dynamically. Usually triggered by a mouse click but something I am trouble with is how to get the table to a state with no rows or columns just like it has no contents. do believe I can use this codedocument.getElementById('results').tBodies[0];but I am kind of clueless where to find a complete DOM reference or a manual and don't know the attributes or properties I must use to empty (if it is even possible) a previously created table.

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Check If The Form Is Empty

Apr 24, 2009

I need a simple script that will check onclick if the user has entered something into the input text form. If they haven't then just alert that you must enter something to search for a term. I had something like this before, but the problem I was having was that it was alerting but right after you click okay it would continue on to the next page... Which kinda make the whole alert thing pointless... Also, I'm about sick in tired of not knowing JavaScript, where is some great sites to get my learn on?

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Declare An Empty Array?

Sep 14, 2010

How do i declare an empty array?

I need to iterate through a group of arrays and search for a user-chosen word every time.

The problem is i can't declare how many array elements will be needed, such as: new array = (12), because some words inside my arrays, occur more than others.

So i need to decalare an empty array with x number of possible values.

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Check And See If Three Fields Are Empty?

Sep 12, 2011

I am trying to check and see if three fields are empty and if they are then to alert the user saying to fill in one of the three fields. I tried this:

if (StreetNumber.value.length == 0) {
if (StreetName.value.length == 0) {
if (City.value.length == 0) {
alert("Please enter a street number, street name, or city.");


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Validate Whether The Checkbox Is Empty Or Not?

Apr 17, 2009

i want to validate whether the checkbox is empty or not, if it is empty, the alert box show message, but the following code is not working...

function validate(form) {
with(form) {


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Check If A Span Is Empty?

Feb 4, 2010

I need to check if a span is empty but every attempt at doing this has failed. This is in a for loop so it has to be able to change the span its checking.

var ids=new Array('PSN','XBL','xfire','steam','tweet','fbook');
if (document.getElementById(ids[i]).innerHTML == '')


Never runs... I have tried a few other things I've found on the internet but they don't see to work either.

I've debugged this and found out the code stops running on this line.

if (document.getElementById(ids[i]).innerHTML == '')

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Check If Localstorage Is Empty?

Sep 19, 2011

How do I check to see if HTML5 localstorage is empty?

I don't need to know what's inside just if there is anything inside.


This is returning empty all the time.

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Gets Xml But When It Loops It Empty The Page

Nov 30, 2011

I'm making a page which gets the contents of an xml file and creates a table and populates it. The problem is when it loops around it seems to strip everything from the page HTML, HEAD, BODY tags and everything inside of those and just puts the value of the elements from the xml file onto the page. My question is, am I able to perform this loop and keep the rest of the contents of the page intact? I've been trying for most of the day and I can't get this working.


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How Do I Keep The Arrays From Showing Up, If Empty?

Jan 12, 2007

I simplified the code so each description is in an array. however, sometimes the arrays will not have any description, and i need those ones not to show up. How would I stop the blank arrays from showing up? for instance if tickercontents[3] is null,i don't want it to display? Code:

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