Check Class and If a DIV is hidden on Pageload - javascript

I have a toggle, and currently it works like this:
if .member-button is clicked it will add .active-sub to .member-button and remove it from .trainer-button. It will also display #member while hiding #trainer
.trainer-button works the same way adding .active-sub to .trainer-button while removing it from .member-button and it will display #trainer while hiding #member.
What I'm having trouble with is when the page first loads, how do I check if .active-sub is added to .member-button and if it is, to remove it from .trainer-button? (and vice versa)
I would also like to check if #member is not set to $("#member").hide(); then to automatically hide #trainer
Javascript:
<script type="text/javascript">
$(document).ready(function(){
//$("#member").hide();
$("#fitness-trainer").hide();
$('.member-button').addClass("active-sub");
$('.member-button').click(function () {
$("#fitness-trainer").fadeOut(function () {
$("#member").fadeIn();
});
$(".trainer-button").removeClass("active-sub");
$(this).addClass("active-sub");
});
$('.trainer-button').click(function () {
$("#member").fadeOut(function () {
$("#fitness-trainer").fadeIn();
});
$(".member-button").removeClass("active-sub");
$(this).addClass("active-sub");
});
});
</script>
HTML: Buttons
Member
Trainer
HTML: Content
<div id="member">
member content
</div>
<div id="trainer">
trainer content
</div>

if($('.member-button').hasClass('active-sub'))
{
$('.member-button').removeClass('active-sub');
$('.trainer-button').addClass('active-sub');
}
and vice-versa.
And:
if($('#member').is(':visible'))
{
$('#trainer').hide();
}
Just like the previous answer.

Try using,
Check whether the .member-button has the class .active-sub by doing the following,
$('.member-button').hasClass('active-sub');
this will return true if it has the class
you can check whether the #member is set to .hide() by,
if($("#member").is(":visible")){
// hide whatever you want here...
}else{
// display whatever you want here..
}

Related

Poweroff toggle button/div

I’m trying to make a power off button (actually it is a div), that when I click, it will change its appearance.
It looks like an interruptor, so I want to change the background-color of the page, the color of the icon ‘power off’ and the border-style of the button.
I took this function from another site and it is doing well in adding once a CSS property, but I want it to go on and of always.
document.getElementById('io').addEventListener('click', function () {
if (this.classList.contains('poweroff')) {
// this.classList.remove('poweroff');
this.classList.add('on');
} else {
this.classList.remove('on');
}
});
I believe the logic will be something like
x = x - 1
where x need to go turning from 0 to 1 and from 1 to 0, every time I click the button.
<body>
<div class="interruptor">
<div id="io" class="poweroff">
<i class="fa fa-power-off"></i>
</div>
</div>
<script src="https://use.fontawesome.com/ddde7c70b6.js"></script>
<script src="/js/logic.js" charset="utf-8"> </script>
</body>
Since you are checking on the basis of powerOff class you need to toggle it also like this
document.getElementById('io').addEventListener('click', function () {
if (this.classList.contains('poweroff')) {
this.classList.remove('poweroff');
this.classList.add('on');
} else {
this.classList.add('poweroff');
this.classList.remove('on');
}
});
Instead of checking if condition and adding and removing classes, use toggle like this
Read Here about toggle
document.getElementById('io').addEventListener('click', function () {
this.classList.toggle('on');
});
You should use toggle instead of add and remove, as :
document.getElementById('io').addEventListener('click', function () {
if (this.classList.contains('poweroff')) {
this.classList.toggle('poweroff');
this.classList.toggle('on');
} else {
this.classList.toggle('on');
}
});
This way it will automatically add and remove class on button click.

Hide/Show div based on checkbox selection

I'm building a form that's supposed to hide and show content according to checkbox selections made by the user. No luck so far in identifying where the error in my code is. Any help will be appreciated. Thanks!
function documentFilter(trigger, target) {
$(trigger).change(function () {
if ($(trigger).checked)
$(target).show();
else
$(target).hide();
});
}
documentFilter("triggerDiv", "hideableDiv");
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<input type="checkbox" id="triggerDiv" > Some caption </label>
<div id="hideableDiv" class="well">
Some hidable content </div>
You were not sending the correct jQuery string to your function.
Change:
documentFilter("triggerDiv", "hideableDiv");
to:
documentFilter("#triggerDiv", "#hideableDiv"); // notice the '#'s to grab ids
It would be more concise to just toggle the hideableDiv whenever the checkbox state changes.
If the checkbox state is always unchecked on load, just hide the div on page load.
If the checkbox state is determined dynamically, then you'd need to check the prop checked state on page load to hide or show the div initially.
function documentFilter(trigger, target) {
$(trigger).on('change', function () {
$(target).toggle();
});
}
documentFilter("#triggerDiv", "#hideableDiv");
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<input type="checkbox" id="triggerDiv" > Some caption </label>
<div id="hideableDiv" class="well" style="display:none">
Some hidable content </div>
Your selectors aren't the best. I'd do the following:
Hide the div when the page loads using jQuery's .hide()
Listen for the checkbox to be clicked
When the checkbox is clicked, check to see if the current state of the checkbox is checked using this.checked
Based on the current state, either hide() or show()
DEMO: http://jsbin.com/zukobufefe/edit?html,js,output
$("#hideableDiv").hide();
$("input[type=checkbox]").click(function() {
if (this.checked)
{
$("#hideableDiv").show();
}
else
{
$("#hideableDiv").hide();
}
});
Your selectors are bad. If you want to find by id you shoud use # before id
To get checked state use .prop
You can use .toggle(state) to show/hide element according to passed state
Try this:
function documentFilter(trigger, target) {
var $target = $(target);
$(trigger).change(function() {
$target.toggle(this.checked);
});
}
documentFilter("#triggerDiv", "#hideableDiv");

How to show hide divs INSIDE divs easily?

My website is a blog where I have a page with all the posts on a single HTML page. The "posts" are just images inside divs and I need some information to be able to show and hide in side the parent div of the images. Heres how its set up:
HTML
<div class="posts">
<h3>mm/dd/yy<p class="preview">click to show more</p><p class="expand">click to show less</p></h3>
<h4>Title</h4><br>
<p class="expand">caption caption caption caption caption caption caption caption caption</p>
<div class="centertext">
<img class="post" src="path/to/image">
</div>
<br>
</div>
lil CSS
.expand{display: none;}
JS
$(document).ready(function(){
$(".posts").click(function(){
$('.expand').toggle();
$('.preview').toggle();
});
What ends up happening that I don't want to happen is that all images and their captions are hiding and showing when I just click one. Shown here or fullscreen here Someone please help me! Additional info: I am using JQuery and Bootstrap too
Change your JS to:
$(document).ready(function () {
$(".posts").click(function () {
$(this).find('.expand').toggle();
$(this).find('.preview').toggle();
});
});
Or more simple:
$(document).ready(function () {
$(".posts").click(function () {
$(this).find('.expand, .preview').toggle();
});
});
To toggle means, that you don't know the state. The best way is, to change a css-class or a data-attribute.
You can use event.target/this to refer the current object clicked and find child(expand/preview) of the object you clicked with find()
or
check for the children if it is .expand/.preview with function is() //not a better approach
$(document).ready(function () {
$(".posts").click(function () {
$(this).find('.expand').toggle();
$(this).find('.preview').toggle();
});
});
or
$(document).ready(function () {
$(".posts").click(function (event) {
$(event.target).find('.expand').toggle();
//check if target is .expand or its child then first go to its parent with .parents().eq() then apply find()
$(event.target).find('.preview').toggle();
//check if target is .preview or its child then first go to its parent with .parents().eq() then apply find()
});
});

How do I apply jQuery's slideToggle() to $(this) and do the opposite to all other elements?

What I'd like to do is have all elements of class collapsible_list not displayed by default (with one exception... see below*), and then toggle their display when their parent <div class="tab_box"> is clicked. During the same click, I'd also like for every other element of class collapsible_list to be hidden so that only one of them is expanded at any given time.
*Furthermore, when the page initially loads I'd also like to check to see if an element of collapsible_list has a child a element whose class is activelink, and if there is one then I'd like that link's parent collapsible_list element to be the one that's expanded by default.
Here's some sample html code:
<style>
.collapsible_list {
display: none;
}
.collapsible_list.active {
display: block;
}
</style>
<div id="sidebar">
<div class="tab_box">
<div class="collapsible_tab">2014</div>
<div class="collapsible_list panel-2014">
1
2
3
</div>
</div>
<div class="tab_box">
<div class="collapsible_tab">2013</div>
<div class="collapsible_list panel-2013">
<a class="activelink" href="/2013/1">1</a>
2
3
</div>
</div>
</div>
And here's where I'm currently at with the javascript (although I've tried a bunch of different ways and none have worked like I'd like them to):
$(document).ready(function() {
// This looks redundant to me but I'm not sure how else to go about it.
$(".collapsible_list").children("a.activelink").parent(".collapsible_list:not(.active)").addClass("active");
$(".tab_box").click(function() {
$(this).children(".collapsible_list").toggleClass("active").slideToggle("slow", function() {
$(".collapsible_list.active:not(this)").each(function() {
$(this).slideToggle("slow");
});
});
});
});
I hope that's not too confusing, but if it is then feel free to let me know. Any help is much appreciated.
Since you have a dom element reference that needs to be excluded use .not() instead of the :not() selector
jQuery(function ($) {
// This looks redundant to me but I'm not sure how else to go about it.
$(".collapsible_list").children("a.activelink").parent(".collapsible_list:not(.active)").addClass("active").show();
$(".tab_box").click(function () {
var $target = $(this).children(".collapsible_list").toggleClass("active").stop(true).slideToggle("slow");
//slidup others
$(".collapsible_list.active").not($target).stop(true).slideUp("slow").removeClass('active');
});
});
Also, instead of using the slide callback do it directly in the callback so that both the animations can run simultaniously
Also remove the css rule .collapsible_list.active as the display is controlled by animations(slide)
Try This.
$('.collapsible_tab a').on('click', function(e){
e.preventDefault();
$('.collapsible_list').removeClass('active')
$(this).parent().next('.collapsible_list').toggleClass('active');
});
Fiddle Demo
I think your code would be less complicated if you simply remembered the previously opened list:
jQuery(function($) {
// remember current list and make it visible
var $current = $('.collapsible_list:has(.activelink)').show();
$(".tab_box").on('click', function() {
var $previous = $current;
// open new list
$current = $('.collapsible_list', this)
.slideToggle("slow", function() {
// and slide out the previous
$previous.slideToggle('slow');
});
});
});
Demo

hide one div when another is showing in jQuery?

I am trying to hide a div when another one is visible.
I have div 1 and div 2.
If div 2 is showing then div 1 should hide and if div 2 is not showing then div 1 should be visible/unhide.
The function would need to be function/document ready upon page load.
I've tried this but I'm not having any luck, can someone please show me how I can do this.
<script>
window.onLoad(function () {
if ($('.div2').is(":visible")) {
$(".div1").fadeOut(fast);
} else if ($('.div2').is(":hidden")) {
$('.div1').fadeIn(fast);
}
});
</script>
Add a class of hidden to each div, then toggle between that class using jQuery. By the way, window.onload is not a function, it expects a string like window.onload = function() {}. Also, put fast in quotations. I don't know if that's required, but that's how jQuery says to do it.
<div class="div1"></div>
<div class="div2 hidden"></div>
.hidden { display: none }
$(document).ready(function() {
if($(".div1").hasClass("hidden")) {
$(".div2").fadeIn("fast");
}
else if($(".div2").hasClass("hidden")) {
$(".div1").fadeIn("fast");
}
});
You should pass a string to the .fadeIn() and .fadeOut() methods.
Instead of .fadeIn(fast) it'll be .fadeIn("fast"). Same for .fadeOut().
And in general since you're already using jQuery it's better to wrap your code like this:
$(function () {
// Code goes here
});
It looks like you're using jquery selectors (a javascript library). If you're going to use jquery make sure the library is loaded properly by including it in the document header (google makes this easy by hosting it for you <script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js"></script>)
With jQuery loaded you can do it like this
$(document).ready(function(){
if ($('.div1').is(":visible")) {
$('div2').hide();
}
else if ($('.div2').is(":visible")) {
$('div1').hide();
}
});
WORKING EXAMPLE: http://jsfiddle.net/HVDHC/ - just change display:none from div 2 to div 1 and click 'run' to see it alternate.
You can use setTimeout or setInterval to track if these divs exists
$(function() {
var interval = window.setInterval(function() {
if($('#div2').hasClass('showing')) {
$('#div1').fadeOut('fast');
}
if($('#div2').hasClass('hidden')) {
$('#div1').fadeIn('fast');
}
}, 100);
// when some time u don't want to track it
// window.clearInterval(interval)
})
for better performance
var div1 = $('#div1')
, div2 = $('#div2')
var interval ....
// same as pre code

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