Get The Number Of Elements Inside Another Element
Nov 27, 2011
I'm working on an exercise I need to have finished pretty soon. The concept is simple: online bookstore with cart etc. It's written on php, using JS and mysql.
Each time I view a book's details, I can add it to my cart, where I can also alter it's quantity.
The code for my cart is this:
PHP Code:
As you can see, each time I choose a book to add it to my cart, a new span will be created, to hold the info of this book. What I need to do with the ManageItem js function, is to update the total cost at the bottom of the page, but I can't seem to be getting anywhere.
Here is what I've done so far:
Code:
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Nov 26, 2006
I'm using the $ function to get an element using ID:
function $(e){return document.getElementById(e)}
I'm trying to extend this function to use it like this:
$("myID").s("div");
In order to get all the elements that are DIV inside element ID "myID". So I wrote this:
$.s=function(es) {return document.getElementsByTagName(es);}
But that's not working.
What did I do wrong?
Also, Is it possible to to somehow extend it to use with endless number of inside tag/id? like: $("a").$("b").s("div").$("c") ?
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Aug 22, 2011
What would be the easier way to do this? For each of the list elements I want to check how many image elements are inside each, and do something with the one that has only one image.
<ul>
<li>
<img src="" />
[code]....
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Aug 24, 2010
I have a form element that looks like this:
<input type="text" onchange=doSomething(this)>
and a function:
function doSomething(theField){
}
I know that within the function I can access properties of the field (e.g. theField.name and theField.value). But how do I access theField's index number in the form's elements[] array -- from the "this" reference that was passed to the function? I.E. if this field is elements[3], how can I get at that 3?
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Mar 31, 2010
i am working on a custom drop down list that has hidden #options DIV which is shown when the user clicks on a button. the problem i am having is that the click event does not seem to be attached to the LI elements since they are hidden when the page first loads. if i show the #options DIV when the page loads everything is working as expected.i've tried to attach the click event after i show the hidden UL but that didn't work either.what can i do to make sure the LI click event fires? i tried to put A tag inside of LI and attach click to that but to no avail.
<style type="text/css">
.gbtn-options {
overflow-y:auto;[code]....
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Sep 17, 2010
What is the correct syntax for an nested array where each array element has 3 elements, a number and two text strings?
Code:
array = ['1, Old Man, Old Man','2 Black Sheep, Black Sheep',....]
should the text strings be in double quotes("")?
Code:
array = ['1, "Old Man", "Old Man"','2 "Black Sheep", "Black Sheep"',....]
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Oct 4, 2010
i have a menu generated by a list with nested lists. i want the parent link to stay highlighted when the mouse hovers over the sub menus. because those sub menus are also generated by jquery (qtip), CSS alone won't do it (triedul.topnav li:hover a {background-color: #F00;}).is there a way to do this using jquery?
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Sep 12, 2011
Below is HTML
<DIV class=info-box>
<DIV class=info-list>
<UL>
<LI>Author <SPAN></SPAN></LI>
[Code]....
I want hidecurrent LI element if SPAN doesnot contain anytext, Author doesnot having value so that will be hidden.
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Jan 9, 2012
My DOM structure in HTML page have some elements 'IMG'. One of 'img' element have attribute 'src' = 'lolo1.jpg'. How can i find the 'DIV' element with this specific 'img' element inside? I have to find nearest 'DIV'.
[Code]...
I wanna write function like a GetNearestDivID('lolo2.jpg') which would give me result 'mix2'
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Apr 15, 2010
I'm using a datepicker and I'm using $(this).html() to get the number of the day inside of a TD. What I want to do is take that number and add one to it. Every time I use var thenum = $(this).html()+1
I get something like 21 instead of 3. Is this possible? I've even tried using $(this).html().toString()
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May 18, 2011
I'm relativly new to JS and brand new to the forum so you might need to dumb down your replys for my slightly lacking knowledge. That being said I do have a very solid grasp of html, css and am getting there with JS and its various frameworks.I'm integrating wordpress into an existing site for a friend and currently have the main blog page appear in a DIV.This is the best way to integrate in this case due to many reasons mostly of way the site is constructed.
<div class="scroll-pane" id="scrollbox">
WORDPRESS BLOG
</div>
[code]....
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Jun 6, 2011
I have a problem with selecting certain elements with jquery.I have a "newsfeed" where I have a lot of these tables:
Code:
<table class=newsfeed_table>
<tr>
<td class="newsfeed_table_icon"><img src="/CodeIgniter/verkstad/icons/nf-msg-cr.png" alt=""/></td>[code]....
It's basically just a table containing a message, who wrote it and when.I'm trying to build a function that filters what types of posts are visible in the newsfeed. So by clicking a button I want to be able to filter out the "message"-post or the "sale-alert"-post.Only way I can see which type of post it is, is by looking at the image source in the table. So depending on what that is, I want to set the table to display:none.
But I've been looking into the jquery selector a bit but I can't make it work. I've tried with .each(function and child selector...
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Oct 18, 2007
I'm looking for a way to grab a number from a string, although this number
is not at either end of the string.
Here is the string in question: var el = "v4Function_Name('argument3')"
Here is a substring that returns the number ( the 3 ) successfully...
var number = el.substring(el.lastIndexOf("ent")+3,el.length-2);
Seems very ineffecient to do it this way, and better to find a lean elegant
way using replace(); How does one go about getting a value inside of a
string with regular expressions? .. or is there a better way?
Here are a couple of the many expressions I have failed with...
var pat = /^[^ent][0-9]*$"/;
var pat = /v4Function_Name('argument([^0-9]+)'/;
var number = el.replace(pat,"");
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Oct 21, 2009
I am using the table of contents function of rebecca murphey. The script works fine, but i need to extend itin two ways.
1. set a number for each toc element?
2. set exactly this number to he h1 inner html in fron of the text?
So that the result is[code]...
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Jun 30, 2011
how can I get the number of elements in an array
Code JavaScript:
function get_active_link(myul, myclass, menuItems){
var menu_unidades_yolo = document.getElementById(myul);
[code]....
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Apr 29, 2010
I am working on a e-commerce site and I need to hide the checkout link (<a>) if the value of of the element (<td>) holding the amount due ="$0.00".
<tr
>
<td
colspan
[code]....
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Nov 2, 2011
I m able to do pagination. But I face another challenge where I once click next,prev or page number,it will refresh the accordion. let say i got 3 headers of accordion.namely A,B,C. After clicking any function in either B or C. It will auto refresh to header A. is it due to I destroy my accordion each time I called?
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Apr 12, 2010
I had to restructure my XML data on my project and now my code does not work. Before the xml was structured like this:
<project><copy></copy><image></image></project>
Now it is:
<company><project><copy></copy><image></image></project><project><copy></copy><image></image></project><project><copy></copy><image></image></project></company>
This used to work to grab the image and copy, (this) being the 'project' element:
text = $(this).find("copy").text();
photo = "imgs/work/" + $(this).find("image").text();
Now, since there can be multiple 'project' elements inside a company element I have a counter that tracks which index I should be on, but I don't know the syntax for getting project(2) image and copy within a company. I tried the following code using eq, but it's not working.
var currCompanyProj = 1;
text = $((this).project.eq("+currCompanyProj+")).find("copy").text();
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Apr 29, 2011
is it possible to do document.getElementById("id-1").document,getElementById("id-2") in order to access an element inside another element
<div id="id-2"></div>
<div id="id-1"><div id="id-2"></div></div>
... i want to access the second element with id "id-2"
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Dec 8, 2011
How do I get the results from the For Loop into the red div from this point?Also, does it appear that I'm thinking about this problem correctly?
HTML Code:
<html>
<head>
[code]....
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Jul 5, 2010
I have a number of elements on a page, which I want to remove. The number changes depending on the number of the results,ie. div Id like result1, result2, result3 etc.Is there a way for me to find out the number of items called resultX or is there a way for me to search through all ID's like result ?
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Jan 15, 2004
how do i count the number of elements in a form ?
document.FormName.elements.length
i get this error from mozilla firebird:
Error: document.FormName has no properties
are u allowed to access forms directly in this way ?
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Sep 9, 2010
I'm trying to take X number of elements and organize them into a table.For example, if I had 7 elements, I'd want 2 rows of 3 and 1 row of 1. If I had 15 elements, I'd want 3 rows of 5, and if I had 11 elements I'd want 2 rows of 4 and 1 row of 3.I'm drawing a total blank on how to go about solving this logic problem. Has anybody come across this problem themselves and solved it?
EDIT: Maybe a little more info would do you good. I'm generating an unordered list and I want the LIs to be as large as possible. It sounds almost like calculus, but I need to figure out the largest size of the images I can fit into a given area when I have X number of images.
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Jul 29, 2011
I've got some code like this:
$(".slide-1").hover(
function () { $('.caption-1').animate({ bottom:0 },200); },
function () { $('.caption-1').animate({ bottom:-35 },200); }
[code]....
I don't have to repeat this block over and over manually? I know I can get jQuery to repeat each code block and insert the number automatically.
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Sep 9, 2011
Does the detach method work recursively? Say I have a div with a considerable number of elements, sub divs, etc and many of these elements have listeners, will detach preserve all of these elements or just the listeners on the parent?
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Sep 26, 2009
So never done this one before so I am having a bit of a time trying to figure this one out.
Say I have a list of LI element and only a few of them have a inline style of display block, the rest have a display of none.
How would I go about looping through and dertmining the number of elements that have a display of block?
for(var m = 0; m < li.style.display.length; i++)
{
alert(m);
};
The above is just crazy but where my mind melts..
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