Develop Reference

jQuery slideDown not working on element with dynamically assigned id

EDIT: I cleaned up the code a bit and narrowed down the problem.
So I'm working on a Wordpress site, and I'm trying to incorporate drop-downs into my menu on mobile, which means I have to use jQuery to assign classes and id's to my already existing elements. I have this code that already works on premade HTML, but fails on dynamically created id's.
Here is the code:
...
var menuCount = 0;
var contentCount = 0;
//find the mobile menu items
var submenus = $('[title="submenu"]');
if (submenus.length && submenus.parent('.fusion-mobile-nav-item')) {
console.log(submenus);
submenus.addClass('dropdown-title').append('<i id="dropdown-angle" class="fa fa-angle-down" aria-hidden="true"></i>');
submenus.each(function() {
$(this).attr("href", "#m" + menuCount++);
})
var content = submenus.parent().find('ul.sub-menu');
content.addClass('dropdown-content');
content.each(function() {
$(this).attr("id", "m" + contentCount++);
})
}
$(document).on('click', '.dropdown-title', function(e) {
var currentAttrValue = $(this).attr('href');
if ($(e.target).is('.d-active') || $(e.target).parent('.dropdown-title').is('.d-active')) {
$(this).removeClass('d-active');
$(currentAttrValue).slideUp(300).removeClass('d-open');
} else {
$('.dropdown-title').removeClass('d-active');
$('.dropdown-content').slideUp(300).removeClass('d-open');
$(this).addClass('d-active');
console.log($(currentAttrValue));
//THIS LINE FAILS
$(currentAttrValue).slideDown(300).addClass('d-open');
}
e.preventDefault();
});
I've registered the elements with the class dropdown-title using $(document).on(...) but I can't figure out what I need to do to register the elements with the custom ID's. I've tried putting the event callback inside the .each functions, I've tried making custom events to trigger, but none of them will get the 2nd to last line of code to trigger. There's no errors in the console, and when I console log the selector I get this:
[ul#m0.sub-menu.dropdown-content, context: document, selector: "#m0"]
0
:
ul#m0.sub-menu.dropdown-content
context
:
document
length
:
1
selector
:
"#m0"
proto
:
Object[0]
So jQuery knows the element is there, I just can't figure out how to register it...or maybe it's something I'm not thinking of, I don't know.

If you are creating your elements dynamically, you should be assigning the .on 'click' after creating those elements. Just declare the 'on click' callback code you posted after adding the ids and classes instead of when the page loads, so it gets attached to the elements with .dropdown-title class.
Check this jsFiddle: https://jsfiddle.net/6zayouxc/
EDIT: Your edited JS code works... There also might be some problem with your HTML or CSS, are you hiding your submenus? Make sure you are not making them transparent.

You're trying to call a function for a attribute, instead of the element. You probably want $(this).slideDown(300).addClass('d-active'); (also then you don't need $(this).addClass('d-active'); before)

Inside submenus.each loop add your callback listener.
As you are adding the class dropdown-title dynamically, it was not available at dom loading time, that is why event listener was not attached with those elemnts.
var menuCount = 0;
var contentCount = 0;
//find the mobile menu items
var submenus = $('[title="submenu"]');
if (submenus.length && submenus.parent('.fusion-mobile-nav-item')) {
console.log(submenus);
submenus.addClass('dropdown-title').append('<i id="dropdown-angle" class="fa fa-angle-down" aria-hidden="true"></i>');
submenus.each(function() {
$(this).attr("href", "#m" + menuCount++);
// add callback here
$(this).click( function(e) {
var currentAttrValue = $(this).attr('href');
if ($(e.target).is('.d-active') || $(e.target).parent('.dropdown-title').is('.d-active')) {
$(this).removeClass('d-active');
$(currentAttrValue).slideUp(300).removeClass('d-open');
} else {
$('.dropdown-title').removeClass('d-active');
$('.dropdown-content').slideUp(300).removeClass('d-open');
$(this).addClass('d-active');
console.log($(currentAttrValue));
$(currentAttrValue).slideDown(300).addClass('d-active');
}
e.preventDefault();
});
})
var content = submenus.parent().find('ul.sub-menu');
content.addClass('dropdown-content');
content.each(function() {
$(this).attr("id", "m" + contentCount++);
})
}

Turns out my problem is that jQuery is adding to both the mobile menu and the desktop menu, where the desktop menu is being loaded first when I search for that ID that's the one that jQuery finds. So it turns out I was completely wrong about my suspicions.

Javascript mouse over on dynamic amount of elements

My goal is on hover a p element contained inside an a tag gets bigger on hover. I have achieved this via css3 transitions, however this is not the issue.
A loop creates a variable amount of elements in the form below on each iteration.
anchorElement = "<a id='anchor" + countWide + "' class=\"boxOPT oneplustwo\" alt=\'"+ image_website +"' style=\"cursor:pointer;width:"+ itemWidth + "px"+";height:"+anchorHeight+";position:absolute;left:"+ locationLeft + "px"+";top:0.3%;\" ><p id=\"test\" class=\"popupDynamic\"> " + popupImageTitles[i] + "</p>";
anchorElement += '</a>';
I would love to be able to add a mouse in/out effect whenever the user scrolls on the relevant anchor. each p tag contains unique information that needs to be conveyed and on hover only the relevant one should react.
I dont want to it it the below way, making two each of the methods every time a new element is created above. is there a way to have the following below which will work for a dynamic amount of elements?
$("#anchor" + etc).mouseover(function() {
document.getElementById("test").style.height="1.1em";
});
$("#anchor" + etc).mouseout(function() {
document.getElementById("test").style.height="1.1em";
});
My version of suggestions. the console logs works.
.popupHighlight {
color: red;
}
..
$('.boxOPToneplustwo').mouseover(function (e) {
console.log("in");
$(e.target).next('p').addClass("popupHighlight");
});
$('.boxOPToneplustwo').mouseout(function (e) {
$(e.target).next('p').removeClass("popupHighlight");
});

What about selecting all a elements?
$('a').mouseout(function() {
//do stuff in here
});
or better yet, have a class selector:
$('.mySpecialRolloverClass').mouseover(function (e) {
$(e.target).next('p').addClass("highlight");
});
$('.mySpecialRolloverClass').mouseout(function (e) {
$(e.target).next('p').removeClass("highlight");
});
which would go hand in hand with
An anchor
and
.highlight {
color:red;
}
Here's a jsfiddle demo:
http://jsfiddle.net/8J6kM/

The #yochannah answer is correct, however if you want to add more links dynamically, you then need to use on method instead of mouseover and mouseout, otherwise it won't work. See the demo and jQuery documentation for further details.
// I assumed that links are placed inside of a container element: #links
$('#links').on('mouseover', '.mySpecialRolloverClass', function (e) {
$(e.target).next('p').addClass("highlight");
});

How to keep the selected menu active using jquery, when the user comes back to page?

I have a typical menu structure -
<Ul class="nav">
<li>Menu1</li>
<li>menu2</li>
-------
</ul>
When I click on certain menu, as per my jquery written on load of layout.html, it selects particular menu.
<script>
jQuery(function(){
jQuery('.nav>li>a').each(function(){
if(this.href.trim() == window.location)
$(this).addClass("selected");
});
</script>
But on that page if I click on certain link which takes me on some other page and then when I come back the menu item does not remain selected.
How can I modify my jquery to achieve this?
Thanks in advance !

As SJ-B is saying, HTML5 Web Storage is a good solution.
If you don't intend to click more than one or two pages away from the page with your list menu, you could add a query to the link that takes you away form the page e.g. the id of one of your list menus.
href="somepage.html could become something like this href="somepage.html?menu_id=menu5
When using window.history.back(), you could then fish the id out of the URL using window.location.search and use id to select the list menu.

You can use simple css code. Use active attribute like
a:active
{
//Some style
}

You can use below code to achieve this.
var lastele=siteurl.substring(siteurl.lastIndexOf("/")+1);
jQuery(".nav>li> a").each(function(){
var anchorhref=jQuery(this).attr("href");
var finalhref=anchorhref.substring(anchorhref.lastIndexOf("/")+1);
if(finalhref==lastele){
jQuery(this).addClass("selected");
}
});

I would do something like this :
<ul class="nav">
<li id="home">Home</li>
<li id="contact">Contact</li>
</ul>
Javascript :
// http://mywebsite.com#home
// location.hash === '#home'
jQuery('.nav ' + location.hash).addClass('selected');

Try to use Session Object of HTML5.
sessionStorage.varName = id of selected item.
on load just check if the sessionStorage.varName has value or undefined, if not then get the value
`var value = sessionStorage.varName;` and set it.

Well there could be many ways, on which is this which i like and always use:
It works when you path name is same as your link name For e.g. yourwebsite.com/Menu1
function setNavigation() {
var n = window.location.pathname,t;
n = n.replace("/", "");
t = $("ul li:contains(" + n + ")");
t.addClass("active");
}
You can than define styling in your active class as you like.

I stumbled upon this when googling for something similar. I have a JQueryUI accordion menu. My menu is in an included script (classic asp), so it is on every page but I think it is a similar situation. I cobbled something together based on SJ-B's answer (don't know why it was down voted).
I have this:
function saveSession(id) {
if (window.sessionStorage) {
sessionStorage.activeMenu = $("#jqmenu").accordion("option", "active") ;
sessionStorage.activeLink = id ;
}
}
and this
$(function() {
//give every li in the menu a unique id
$('#jqmenu a').attr('id', function(i) {
return 'link'+(i+1);
});
var activeMenu = 0;
var activeLink = "";
if (window.sessionStorage) {
activeMenu = parseInt(sessionStorage.activeMenu);
activeLink = sessionStorage.activeLink;
}
$("#" + activeLink).parent().addClass("selectedmenu");
$("#jqmenu").accordion({collapsible: true, active: activeMenu, heightStyle: "content", header: "h3"});
$("#jqmenu a").click(function() { saveSession($(this).attr('id')); });
});
OK, a bit untidy and cobbled together from various suggestions (I'm still learning), but it seems to work. Tried on IE11 and Firefox. Chrome can't find localhost but that's another story.

add lines below
<script>
$(function(){
$("a[href='"+window.location+"']").addClass("selected");
});
</script>

var url = window.location.pathname,
urlRegExp = new RegExp(url.replace(/\/$/, '') + "$");
$('.nav li').each(function () {
if (urlRegExp.test(this.href.replace(/\/$/, ''))) {
$(this).addClass('active');
}
});

execCommand insertHtml, outer div not inserted why?

Why is the DIV not inserted but only the IMG ?
$(document).ready(function() {
$(document).on('click', '#insertImage', function(){
/*
Why is the DIV not inserted ?
*/
var item = "<div class='resizable'><img src='http://www.rockiesventureclub.org/wp-content/uploads/2013/02/flower-icon.png'></div>";
document.execCommand('insertHTML', false,item);
})
});
see:
http://jsfiddle.net/daslicht/gU2jP/#base

Why not doing it with jQuery since you already use it??
http://jsfiddle.net/gU2jP/5/
var _$div = $('<div>'),
_$img = $("<img class='resizeable' id='myImg' src='http://imperavi.com/img/library.jpg' />");
_$div.append(_$img);
$('body').append(_$div);

The background of the Question was the following:
I just like to be able to make the added Image Float Left or Right.
Since jQueryUI automatically adds a wrapper-div around each resizeable item I thought that I need to add it somehow manually in order to assign a id to it.
doug65536 on Freenode helped me to create this solution without the need to create an additionally div manually:
We also discovered that the Fiddle wont work properly in safari
$(document).on('click', '#insertImage', function () {
document.execCommand('insertHTML', false,
"<img class='resizeable' id='myImg' src='http://imperavi.com/img/library.jpg'>");
$(".resizeable").resizable({
aspectRatio: true
}); //just a try here
$('#myImg').parent().css({
'float':'left',
'margin':'15px'
});
})
http://jsfiddle.net/daslicht/6cGbQ/
Thank you very Much !

JQuery: How do you change a graphic on a mouse hover event?

Using JQuery, how do I change a map icon whenever I mouse hover over a row in an HTML table/div?
Here is an example:
http://www.sfsunriseidx.com/homes/94131/?uuid=9ed7269b-5327-4c88-ba15-f700ed343d69&source=REDIR
Notice when you mouse hover over a home listing on the left, the corresponding map icon on the right changes.
Question: how do I emulate this functionality using JQuery?
Update: It was suggested below that an ID linked the two elements. If that is the case, how would you still accomplish this?

Use the for="" attribute in html, like
Hover Link
On the image:
<img id="mapIcon4" src="myImg.png" />
jQuery, using the hover function to animate the corresponding ID, the same one in the for:
$(".mapHover").hover(function() {
$("#" + $(this).attr('for')).animate({"left": "-=50px"}, "slow");
}, function() {
$("#" + $(this).attr('for')).animate({"right": "+=50px"}, "slow");
});

Probably both elements are linked by a ID..

Something like this:
$(document).ready(function() {
var googleMap = $("#googleMaps");
$('a', '#mapLinks').hover(function() {
var index = $(this).index(this);
$('img:eq(' + index + ')', googleMap).animate({
width: '+=10%'
});
}, function() {
var index = $(this).index(this);
$('img:eq(' + index + ')', googleMap).animate({
width: '-=10%'
});
});
});
Just make sure you change the "#googleMaps" and "#mapLinks" thing :)