Way To Detect Empty Object
Aug 27, 2010If kobe = {};
what function of kobe would make {} evaluate to true and {pao: "gasol"} evaluate to false?
If kobe = {};
what function of kobe would make {} evaluate to true and {pao: "gasol"} evaluate to false?
How to turn table A to table B? code...
View 7 Replies View Relatedvar someObj = {} Is there something I use to determine that someObj is empty? It's still a typeof object but has no attributes.
View 14 Replies View RelatedI have the empty object and two variables:
[Code]...
We all know you can test if an object exists in JS. Example:
Code:
if (document && document.all) {
}
However, I need to find if the style object exists. This "style" object to be exact:
Code:
document.getElementById("test").style.display = "none";
Can I find if the style object works without using getElementById on a specific object?
Can Javascript be used to detect a certain url and then "not" write some html according to that url and also detect something on the page and "then" display some html?.
Example: I'm working on a volusion site that uses asp. There's basically only one page that's changed dynamically. I would like to display some html when and only if the cart has any items in it. But also not to show up on the check-out pages.
The page dynamically displays "Your cart has 1 item in it..." when the visitors puts something in their cart.
So could javascript detect when this is displayed then write some html and then also detect if the url is showing the cart and then not show the html?
I just got this script for a countdown on a website and I got it to work locally but when I upload it to the server i get the error "index.html:22 Uncaught TypeError: Object [object Object] has no method 'fancycountdown'".
I have checked to make sure all other javascript files are loading and they are and I can't figure out whats wrong. You can see it [URL]
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.
Code:
<html>
<head>
<script language="javascript" type="text/javascript">
//function to show province
[Code].....
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...
View 3 Replies View RelatedI'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 +
"&fechaDesde="+$("dateSelect").options[$("dateSelect").selectedIndex].value;
[Code].....
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.
I am trying to empty the contents of a DIV.
Here is the HTML
Code:
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?
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.
View 3 Replies View RelatedHow can i do this in a JS function:PHP:
PHP Code:
function myfunk ($var1 = 'value') {
}
[code]....
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?
document.img[alt='ex'].src="none";
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?
I creating a form, i want submit if it is not empty, how can i do it?
View 1 Replies View RelatedI 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.
View 5 Replies View RelatedI 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?
View 6 Replies View RelatedHow 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.
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.");
[Code]....
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) {
if(agreement.value.checked==false)
{
[Code]....
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:
[url]
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.
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');
for(i=0;i<=ids.length-1;i++)
{
if (document.getElementById(ids[i]).innerHTML == '')
[Code]....
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 == '')
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.
Code:
This is returning empty all the time.
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.
[Code]...
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:
View 2 Replies View Related