I have following css code in a html file:
<style>
.myClass { color:red; }
</style>
How can I extract the value of the property "color" from the class "myClass"?
Pseudo-code (which of course doesn't work), so you get the idea:
<input type="button" onclick"alert('The CSS color is '+document.style.myClass.color)">
I have several tags on a webpage of the same class. If the user clicks a
specific checkbox I'd like to be able to alter the display property of the
class, affecting all objects of that class.
This is an intranet application so we know that javascript will be enabled
and the browser will be IE.
How can I affect all the members of this class? Is there a way I can toggle
the DISPLAY property of a class so all the elements using that class would
be affected? Code:
Trying to figure out how to use javascript to extract all links on a page that have a certain class:
e.g. - extract only links with a class of 'tools', ignore all other links:
<a href="http://www.google.com" class="tools">Search</a>
<a href="http://www.tripod.com" class="grapes">Searched</a>
<a href="http://www.dogpile.com">Searches</a>
I'm guessing I probably have to use something like getelementbyclass("tools")?
I have the following situation:In CSS:
[Code]...
How can I get the CSS properties from such "class inheritance" set-up? More in particular, how can I get the marginLeft from the class "combination" .northSouth.ambiPixelBox? I tried the following in jQuery, but that failed:
[Code]...
The script is working, tab-content is changing but when clicked a tab I want to change class property of the li of active tab as class="current"How can I do it
<ul class="nav-content">
<li class="current first-li"><a href="#tabs-1">tab 1</a></li>
<li><a href="#tabs-2">tab 2</a></li>
[code]....
For some reason I cannot get jQuery.css('name') to return a style property that was assigned by a class. However, it returns the property if it was assigned by style="". Has anyone else run into this issue? Bug?
Here is my test code:
I could use a hand changing the display property of a group of objects based on classname. What I have here doesn't work; perhaps you can see why? I think the basic problem is that I don't know how to access the objects properly.. Code:
View 3 Replies View RelatedI am writing a Javascript UI component. I have already written a
"disable()" method for it, but I would like to go one step further in
order to make my component as compatible with existing HTML controls as
possible.
With standard HTML controls we can do this:
myTextField.disabled = true;
and as soon as this property is set, I assume there is a property
listener of some kind that is invoked to change the appearance and
value etc of the control.
I want to write my own 'property listener' to do this with my control.
Can I do it in Javascript or is this too "low level", requiring code at
the browser implementation level?
Is there a way to make one property an alias for another? This would
mean that if the value of the original is changed then so is the value
of the alias. I tried the following example and it does not give this
type of behavior, of course. Code:
I have situation that when my page is loaded i create js object
<html>
...
<script>
function Page() {
this.page = 0;
this.result = 0
this.resultCount =1;
this.currentPage =1;
}
MyPage= Page()
</script>
then in my javascript function i use object like this:
function getPage() {
if(!MyPage) {
MyPage = new Page();
}
return MyPage;
}
but there is one problem: MyPage lost one of the property, currentPage.
When i do alert(MyPage.cuurentPage) shows mi undefined. After object
initialization everything seems to be alright, currentPage is set to 1
but when i Try use MyPage in my js code is already set to undefined.
What happen? What I'm doing wrong?
I have a word bank for a javascript crossword puzzle I'm working on. What I
want to do is when a user clicks on a word in the word bank, it crosses
itself out. I have tried:
<a href="javascript:this.style.textDecorationLineThrough">text here</a>
to no avail. does anyone have an idea on how to do this?
For a application I am writting I need to make some table columns apear and disapear by clicking on a link. I do this by changing the "style" property in the <td> tag.
The HTML is generated by ASP.NET, which automaticly sets the style property of the <td> tag to the right value. and makes links to the right Javascript function call to change a specific property.
This is the HTML output of 2 table columns: Code:
I would like to set the link's "visited" pseudo-class with javascript
without clicking on the link. My goal is to update the link's color
(previously set in the CSS file) to be "visited" without actually
clicking on the link and then clicking "back" in the browser.
Does anyone know how? Here are the following things I've already
tried to no avail:
var obj = document.getElementById("idOfMyLink");
//obj.visited=true; // NO
//obj.style.visited=true; // NO
//obj.click(); // NO, performs a click and takes me away from
current page
/*
// Setting the src of an iframe on the same page, trying to
"stuff" this URL into browser's "History"
var theFrame = document.getElementById("myiframe");
theFrame.src = obj.href;
// NO. The iframe does go to correct URL, but the link's color
doesn't update.*/Any ideas?
I discovered this syntax on the google example of a client to their web
service.
function PagClass()
{
this.init();
}
PagClass.prototype = {
init : function() {
this.m_bInited = true;
this.m_nTotalRows = 0;
this.m_nFirstRowNum = 0;
this.m_nRowsPerPage = 0;
this.m_nNumPages = 0;
this.m_nReportid = 0;
this.m_nResultNumStart = 0;
this.m_strStart = "";
},
foo: function() {...},
bar: function() {...}
}
This seems like a very elegant way to create classes in javascript,
gives you a constructor and lists methods as comma separated
properties.
My colleague is suspicious that there may be excessive runtime overhead
associated with the prototype, property list way of doing this.
Anybody know for sure?
I have got some confused problem when I try to write some custom object by javascript.
Look at the example code here:
<BODY>
<script language="jscript">
function Class()
{
this.member = null;
this.event = null;
this.memberFunction = function()
{
alert("memberfunc" + this.member);
this.callEvent();
alert('after call');
}
this.callEvent = function()
{
alert("call:" + this.event);
if (this.event)
{
this.event();
}
}
}
var obj = new Class();
obj.member = "hello";
obj.event = function()
{
alert('event');
}
obj.memberFunction();
</script>
<button id=hello >click</button>
<script>
hello.onclick=obj.memberFunction;
</script>
I try to define a javascript class and define a event handler for it. There is a member and a memberFunction and a event in the Class body. Then I created a object (obj) of Class and defined a event handler like this:
obj.event = function()
{
alert('event');
}
When I call the function: obj.memberFunction(); the event handler was
fired and alert a message ('event'). But when I try to use a button to fire the event, it doesn't work. It seems we have lost the member function callEvent, it is a undefined value, the same as this.event member.
Modello is a lightweight framework that enables you to write JavaScript class like other class-based object-oriented programming language. It introduces class, class-based inheritance, multi-inheritance, private members, RTTI and more into JavaScript. Modello can help you write more readable, reusable and maintainable JavaScript code.
View 2 Replies View RelatedCan you call a java class from within a javascript?
View 1 Replies View Relatedhow the class attribute works in CSS: I can specify that every attribute with class="foo" be italicized with: .foo {font-style: italic;}
What if I want to do the same sort of thing in Javascript? Is there something built-in like document.GetElementsbyClass("foo").style = "italic" (I'm just making this code up of the top of my head, I don't know how javascript works.)
It seems to me that with JavaScript you're supposed to use the name="" attribute instead of class="". Why the diference?
I looked at webmonkey that had an article about this, but their writing style is simply confusing and I can't make heads or tails of their articles.
I am developing an application which allows a web site visitor to email a page to a friend using the PHP mail() function.
What I would like to do is dynmaically extract the H1 from each page using JS and store this as a PHP session named title. Can I get this info using JS?
I'm slowly discovering the world of JavaScript, so I'm not sure I'm
attacking this problem in the right manner, thus if I'm in the wrong
newsgroup, my apologies.
What I'm trying to do is extract some news items from a web site. To
do this, I'm using Microsoft Word VBA and using the following bit of
script:
I found this little script for extracting parameters from a url but wondered
what the shortest and most efficient way to do it would be, like the
following or via regexp?
function getParameter(paramName) {
var currentUrl = window.location.search
var strBegin = currentUrl.indexOf(paramName) + (paramName.length+1)
var strEnd = currentUrl.indexOf("&",strBegin)
if (strEnd==-1)
strEnd = currentUrl.length
return currentUrl.substring(strBegin,strEnd)
}
Any shorter way?
My code: [URL]... When I click on Upraviť in class edit I need add some HTML code to begin and to end of class entry how to I can select class entry in the same class post on which I clicked?
View 1 Replies View RelatedIs there any method to extract both the images (with and without
mouse-over) from a web site.
What will be the best way to extract dynamically changing information from a web page that holds XML?I have to extract some data from multiple web pages.These sites contain XML code that dynamically reloads (and changes) parts of the page.Since only small parts get a refresh (perhaps 200 bytes every 5 seconds) it wouldn't be efficient (and also might lead to negative reactions from the server) to reload the whole page (about 40k) every time.How could I best determine these updated contents and send them to the program that further processes them?I am familiar with several programming languages but unfortunately have very little knowledge of internet programming.
View 3 Replies View RelatedI'm trying to get some average rgb values from an image in one canvas object and apply them via fillstyle to a rectangle in another canvas object.I have a dropdown that loads an image onChange()="ChangeBaseWood()" into a canvas object. The second canvas object is to be filled with an average color based on the content of the first canvas onClick="GetBaseColor()". For simplicity I've replaced the for loop with just the values of pixel 0,0. Where I think I am assigning the rgb values, the error console keeps reporting that var sample is undefined at the line "var redpart = sample[0].
function ChangeBaseWood(){
var dropdown = document.getElementById('woodvalue');
var woodcanvas = document.getElementById('basewood');[code]....
I've tried various things to assign the redpart,grnpart and blupart but I'm missing something basic.
I have a bit of a problem and as my javascript is a rather poor I'm struggling to come up with a solution. Basically I need to split the variable "#country" into two parts and call the second half as the "this" value for '#int-dc'. Using '+' as the start point end ending at the end of the string.
For instance 'this' returns 12+44 I want to split it to "12" and "+44" the latter (+44) replacing 'this' in the code below.
$(function() {
$("#country").change(function() {
$("#int-dc").val
($(this).val());
});
});