What I am trying to achieve here is when a user clicks an element it becomes hidden, once this happens I want to prepend inside the containing element another Element to make all these items visible again.
var checkIfleft = $('#left .module'),checkIfright = $('#right .module');
if(checkIfleft.hasClass('hidden')) {
$('#left').prepend('<span class="resetLeft">Reset Left</span>');
} else if(checkIfright.hasClass('hidden')) {
right.prepend('<span class="resetRight">Reset Right</span>');
}
I tried multiple ways, and honestly I believe .length ==1 would be my best bet, because I only want one element to be prepended. I believe the above JS I have will prepend a new element each time a new item is hidden if it worked.
Other Try:
var checkIfleft = $('#left .module').hasClass('hidden'),
checkIfright = $('#right .module').hasClass('hidden');
if(checkIfleft.length== 1) {
$('#left').prepend('<span class="resetLeft">Reset Left</span>');
} else if(checkIfright.length== 1) {
right.prepend('<span class="resetRight">Reset Right</span>');
}
else if(checkIfleft.length==0){
$('.resetLeft').remove()
} else if (checkIfright.length==0){
$('.resetRight').remove()
}
Basically if one element inside the container is hidden I want a reset button to appear, if not remove that reset button...
hasClass() only works on the first item in the collection so it isn't doing what you want. It won't tell you if any item has that class.
You can do something like this instead where you count how many hidden items there are and if there are 1 or more and there isn't already a reset button, then you add the reset button. If there are no hidden items and there is a reset button, you remove it:
function checkResetButtons() {
var resetLeft = $('#left .resetLeft').length === 0;
var resetRight = $('#left .resetRight').length === 0;
var leftHidden = $('#left .module .hidden').length !== 0;
var rightHidden = $('#right .module .hidden').length !== 0;
if (leftHidden && !resetLeft) {
// make sure a button is added if needed and not already present
$('#left').prepend('<span class="resetLeft">Reset Left</span>');
} else if (!leftHidden) {
// make sure button is removed if no hidden items
// if no button exists, this just does nothing
$('#left .resetLeft').remove();
}
if (rightHidden && !resetRight) {
$('#right').prepend('<span class="resetRight">Reset Right</span>');
} else if (!rightHidden) {
$('#right .resetRight').remove();
}
}
// event handlers for the reset buttons
// uses delegated event handling so it will work even though the reset buttons
// are deleted and recreated
$("#left").on("click", ".resetLeft", function() {
$("#left .hidden").removeClass("hidden");
$("#left .resetLeft").remove();
});
$("#right").on("click", ".resetRight", function() {
$("#right .hidden").removeClass("hidden");
$("#right .resetRight").remove();
});
FYI, if we could change the HTML to use more common classes, the separate code for left and right could be combined into one piece of common code.
Add the reset button when hiding the .module, if it's not already there :
$('#left .module').on('click', function() {
$(this).addClass('hidden');
var parent = $(this).closest('#left');
if ( ! parent.find('.resetLeft') ) {
var res = $('<span />', {'class': 'resetLeft', text : 'Reset Left'});
parent.append(res);
res.one('click', function() {
$(this).closest('#left').find('.module').show();
$(this).remove();
});
}
});
repeat for right side !
I've recently experimented with using CSS to do some of this stuff and I feel that it works quite well if you're not trying to animate it. Here is a jsfiddle where I can hide a module and show the reset button in one go by adding/removing a 'hideLeft' or 'hideRight' class to the common parent of the two modules.
It works by hiding both reset button divs at first. Then it uses .hideLeft #left { display:none;} and .hideLeft #right .resetLeft { display: block; } to hide the left module and display the reset button when .hideLeft has been added to whichever element both elements descend from. I was inspired by modernizr a while back and thought it was a neat alternative way to do things. Let me know what you think, if you find it helpful, and if you have any questions :)
Related
Im using a table and rows can have child rows and it can go down a few levels,
what is happening now is that when hiding a child element it then opens that childs child element.
Heres my jQuery:
$(document).ready(function() {
function getChildren($row) {
var children = [], level = $row.attr('data-level');
while($row.next().attr('data-level') > level) {
children.push($row.next());
$row = $row.next();
}
return children;
}
$('.parent').on('click', function() {
var children = getChildren($(this));
$.each(children, function() {
$(this).toggle();
})
});
$(".parent a").click(function(e) {
e.stopPropagation();
})
})
I have set up a jsfiddle so you can see whats happening
https://jsfiddle.net/rhvye8k0/4/
If you click the first "+" you will see what im trying to describe.
Cant think how to sort it out
Update,
have sorted it and updated jsfiddle https://jsfiddle.net/rhvye8k0/5/
There may be a way to reduce the jQuery but it works for now
Your problem is the $(this).toggle(); in .parent's onclick handler. The tr at level 3 has style="display:none", the others don't. toggle() will toggle the receiving element(s) visibility so the others are show (their display is implicitly block) and level 3's is hidden.
The code already creates a navigation based on a JSON-file. The url are accessible by writing data.chapter[].subchapter[].url, the according title through data.chapter[].subchapter[].title
In case you are interested in that part or want the complete code, I uploaded it there: http://fabitosh.bplaced.net/SkriptET_iFrame_v2/
The goal now is to create a right sidebar which shows the links to the next and previous files in the structure. My approach is below.
What confuses me, is that back() is called until subchap is zero, when a link in #left is being clicked on. It should only be called when the previous-link is being clicked on. What do I have to change in order to achieve that?
Thanks a lot already!
var chap; //position in the array of the currently open chapter
var subchap; //position in the array of the currently open subchapter
function update_right() {
var path = data.chapter[chap].subchapter;
//Previous Page
if(subchap > 0) {
$("#prev").html("<b>Previous:</b><a href='"+path[subchap-1].url+"'>"+path[subchap-1].title+"</a><br/>");
$("#prev > a").click(back());
} else { //subchap == 0
$("#prev").html("");
};
}
function back() {
subchap--;
update_right();
}
$(document).ready(function() // DOM needs to exist in order to be able to add stuff in there
{
...Navigation being built up...
//------ onClick Navigation
$('#left > ul > li > a').click(
function(e)
{
chap = $(this).attr("data-chap");
subchap = $(this).attr("data-subchap");
update_right();
}
);
});
I am using the Javascript below to animate an accordion (it's a slightly modified variant of the one explained here: http://tympanus.net/codrops/2010/04/26/elegant-accordion-with-jquery-and-css3/.
Now I wanted to have the first element to be open on pageload, so I figured I just give it some sort of extra-class via Javascript (and define that .active state via CSS) to have it open up.
This worked, however if I hover over any but the first-element with said .active class, the first element keeps its state, and stays open until I hover over it at least once.
So, what I want is: the first element of my accordion is open and collapses if the user hovers over any of the elements that are not the first. I think I need to add a line in the hover function to either take the class away of the first element or to give the new element the active state, but I don't know how to do it and keep breaking the thing.
<script type="text/javascript">
jQuery(function() {
activeItem = jQuery("#accordion li:first");
jQuery(activeItem).addClass('active');
jQuery('#accordion > li, #accordion > li.heading').hover(
function () {
var jQuerythis = jQuery(this);
jQuerythis.stop().animate({'height':'280px'},500);
jQuery('.heading',jQuerythis).stop(true,true).fadeOut();
jQuery('.bgDescription',jQuerythis).stop(true,true).slideDown(500);
jQuery('.description',jQuerythis).stop(true,true).fadeIn();
},
function () {
var jQuerythis = jQuery(this);
jQuerythis.stop().animate({'height':'40px'},1000);
jQuery('.heading',jQuerythis).stop(true,true).fadeIn();
jQuery('.description',jQuerythis).stop(true,true).fadeOut(500);
jQuery('.bgDescription',jQuerythis).stop(true,true).slideUp(700);
}
);
});
</script>
Looks like this is happening because each accordion item has its own hover event that takes care of its own animation. You can refactor the code slightly to make this easier to understand and reuse:
var activeItem = jQuery("#accordion li:first");
jQuery('#accordion > li, #accordion > li.heading').hover(
function () { hoverMe(jQuery(this)); },
function () { unhoverMe(jQuery(this)); }
);
//This gets called when cursor hovers over any accordion item
var hoverMe = function(jQuerythis) {
//If the first item is still active
if (activeItem) {
contract(activeItem); //...Shrink it!
activeItem = false;
}
//Expand the accordion item
expand(jQuerythis);
};
//This gets called when cursor moves out of accordion item
var unhoverMe = function(jQuerythis) {
contract(jQuerythis);
};
//I have moved the hover animation out into a separate function, so we can call it on page load
var expand = function(jQuerythis) {
jQuerythis.stop().animate({'height':'280px'},500);
jQuery('.heading',jQuerythis).stop(true,true).fadeOut();
jQuery('.bgDescription',jQuerythis).stop(true,true).slideDown(500);
jQuery('.description',jQuerythis).stop(true,true).fadeIn();
};
//I have moved the unhover animation out into a separate function, so we can contract the first active item from hoverMe()
var contract = function() {
jQuerythis.stop().animate({'height':'40px'},1000);
jQuery('.heading',jQuerythis).stop(true,true).fadeIn();
jQuery('.description',jQuerythis).stop(true,true).fadeOut(500);
jQuery('.bgDescription',jQuerythis).stop(true,true).slideUp(700);
};
//Now expand the first item
expand(activeItem);
I have put together a simplified version demonstrating the logic. Please let me know how you get on.
I am trying to toggle via a select option. I am having difficulties toggling more than two. My goal is to be able toggle as far as 4 through the select option. For example Categories and subcategories. Here is my example in jsfiddle.
<script type="text/javascript">
var op = $("#tables option[value='options']:selected");
var os = $("#tables option[value='Example2']:selected");
if (op.length)
$("#something").show();
else
$("#something").hide();
if (op == ("#something").show())
$("#something2").show();
else
$("#something2").hide();
}
</script>
Is this the design pattern you are looking for?
if your object is not selected
if your parent is selected
you are also selected
else
you are selected
else
you are now unselected
This logic will work for any depth of recursion.
EDIT: Assuming each menu is a ul. You'll have to tweak the selectors.
This is just one way to do it. Not the best if you have events firing on visibility, or if you have ui reflow issues.
clickyclicky = function(event) {
var $target = $(event.currentTarget);
if (!$target.hasClass("selected")) {
// hide the old target and its parents
var $oldTarget = $('.selected');
$oldTarget.removeClass("selected").hide().parents('ul').hide();
// show the new target and its parents
$target.show().addClass("selected").parents('ul').show();
} else {
// hide the target
$target.removeClass("selected").hide();
// move the selected token to the parent.
$parent = $target.parent().parent(); // assuming an ul/li tree pattern.
if ($parent.is('ul')) {
$parent.addClass("selected");
}
}
}
I haven't tested this code, it's just a general reference.
EDIT: Here's the Fiddle: http://jsfiddle.net/uA7XD/76/
I've got a list of items which can be expanded/collapsed individually or all at once with an Expand All/Collapse All button.
All the items start collapsed, but if you manually expand item so that every item is expanded, the 'Expand All' button should change to 'Collapse All'. Similarly if you collapse all the items it should change to 'Expand All'.
So every time you click on an individual line, it should check to see if ALL the items have now been collapsed/expanded, and if so, update the Expand/Collapse All button.
My problem is that I'm not sure how to iterate over all the items on a click to see if they are collapsed or not and properly update.
Here is a JSFiddle for this: JSFiddle
Here is my current code:
var expand = true;
jQuery.noConflict();
jQuery(function() {
jQuery('[id^=parentrow]')
.attr("title", "Click to expand/collapse")
.click(function() {
jQuery(this).siblings('#childrow-' + this.id).toggle();
jQuery(this).toggleClass("expanded collapsed");
ExpandCollapseCheck();
});
jQuery('[id^=parentrow]').each(function() {
jQuery(this).siblings('#childrow-' + this.id).hide();
if (jQuery(this).siblings('#childrow-' + this.id).length == 0)
jQuery(this).find('.expand-collapse-control').text('\u00A0');
});
jQuery('#childrow-' + this.id).hide("slide", { direction: "up" }, 1000).children('td');
});
function CollapseItems() {
jQuery('[id^=parentrow]').each(function() {
jQuery(this).siblings('#childrow-' + this.id).hide();
if (!jQuery(this).hasClass('expanded collapsed'))
jQuery(this).addClass("expanded collapsed");
});
}
function ExpandItems() {
jQuery('[id^=parentrow]').each(function() {
jQuery(this).siblings('#childrow-' + this.id).show();
if (jQuery(this).hasClass('expanded collapsed'))
jQuery(this).removeClass("expanded collapsed");
});
}
function ExpandCollapseChildren() {
if (!expand) {
CollapseItems();
jQuery('.expander').html('Expand All');
}
else {
ExpandItems();
jQuery('.expander').html('Collapse All');
}
expand = !expand;
return false;
}
function ExpandCollapseCheck() {
if ((jQuery('[id^=parentrow]').hasClass('expanded collapsed')) && (expand)) {
jQuery('.expander').html('Expand All');
CollapseItems();
expand = !expand;
}
else if ((!jQuery('[id^=parentrow]').hasClass('expanded collapsed')) && (!expand)) {
jQuery('.expander').html('Collapse All');
ExpandItems();
expand = !expand;
}
}
A couple of things I see with your code.
It seems that you may have multiple children with the same ID, such as #childrow-parent0. This is not legal HTML, and can lead to problems with JavaScript. Use classes instead.
Manipulating ID's to find children is more difficult than using built-in jQuery selectors to find children. I realize that in this case, they are siblings rather than true children, but you can still use .nextUntil(".parent") to find all of the "children" of a parent.
Use your click handlers to do the expanding/collapsing instead of repeating code. One you have a click handler, you can call .click() on a parent, and it will toggle as if you clicked it.
If half of your elements are collapsed, do you want "Expand All" or "Collapse All"? You might want both.
With all of that in mind, I wrote your code with a lot less lines. To answer your specific question, I just compared the number of '.parent.expanded' elements to the number of '.parent' elements to see if they were all expanded or not. (I changed to using a single .parent class.)
Demo
The relevant code to your question:
$('#expand_all').toggleClass("disabled", $('.parent.expanded').length == $('.parent').length);
$('#collapse_all').toggleClass("disabled", $('.parent.collapsed').length == $('.parent').length);
This uses toggleClass(), with the second argument returning true/false depending on the number of collapsed/expanded parents. This is used by toggleClass to determine whether the disabled class is applied.
Don't bother iterating, just use a selector to get a count of all the elements & their classes:
var $all = jQuery('selector to return all lines');
if($all.length == $all.filter('.collapsed').length)
//all the rows are collapsed
if($all.end().length == $all.filter('.expanded').length)
//all the rows are expanded