Develop Reference

Show hide/div based on drop down value at page load

I have the following code that I use to hide/show a div using a drop-down. If the Value of the drop-down is 1, I show the div, otherwise I hide it.
var pattern = jQuery('#pattern');
var select = pattern.value;
pattern.change(function () {
if ($(this).val() == '1') {
$('#hours').show();
}
else $('hours').hide();
});
The select drop down retrieves its value from the database using form model binding:
<div class="form-group">
<label for="pattern" class="col-sm-5 control-label">Pattern <span class="required">*</span></label>
<div class="col-sm-6">
{{Form::select('pattern',['0'=> 'Pattern 0','1'=> 'Pattern 1'],null,
['id'=>'pattern','class' => 'select-block-level chzn-select'])}}
</div>
</div>
This select drop-down then hides or shows the following div:
<div id="hours" style="border-radius:15px;border: dotted;" >
<p>Example text</p>
</div>
The problem:
The div won't be hidden if the pattern stored in the database is set to 0. I have to manually select "Pattern 0" from the drop down to change it. I know that is due to the .change() method. But how do I make it hide/show on page load?

Usually in such case I store the anonymous function reference as below:
var checkPattern = function () {
if ($('#pattern').val() == '1') {
$('#hours').show();
}
else $('#hours').hide();
}
It makes the code ready to use in more then one place.
Now your issue could be resolve in a more elegant way:
$(document).ready(function(){
// add event handler
$('#pattern').on('change', checkPattern);
// call to adjust div
checkPattern();
});

Well, if the element "should" be visible by default, you just then have to check condition to "hide it" (you don't have to SHOW an element that is already visible...) :
if(pattern.value != %WHATEVER%) { $('#hours').toggle(); }
Then, to switch display on event or condition or whatever :
pattern.change(function(evt){
$('#hours').toggle();
});
Not sure that your event will work. I'd try something like
$(document).on(..., function(evt){
//behaviour
});
http://api.jquery.com/toggle/
https://learn.jquery.com/events/handling-events/

jQuery display property not changing but other properties are

I'm trying to make a text editable on clicking it. Below is the code I'm trying. When the title is clicked it shows an input box and button to save it.
<div class="block">
<div class="title">Title</div>
<div class="title-edit">
<input type="text" name="title" value="Title">
<button>Save</button>
</div>
</div>
I have changed other properties like color or changing the text of the elements and its working, but it is not applying the display property or .show()/.hide() function on the title or edit elements.
Below is my jQuery
$(function(){
$('.block').on('click', editTitle);
$('.title-edit button').on('click', saveTitle);
});
function saveTitle(){
var parent = $(this).closest('.block');
var title = $('.title', parent);
var edit = $('.title-edit', parent);
$(title).show();
$(edit).hide();
}
function editTitle(){
$('.title-edit', this).show();
$('.title', this).hide();
}
Here's the jsfiddle
https://jsfiddle.net/ywezpag7/
I've added
$(title).html('abcd');
to the end to show that other properties/functions are working, but just not the display.
For checking the html change on title element you will have to check the source through developer tools cause the title element is hidden.
Where am I going wrong?

Your problem is in the function saveTitle. The first line must stop the event propagation otherwise after this function the editTitle function is called.
The snippet:
$(function(){
$('.block').on('click', editTitle);
$('.title-edit button').on('click', saveTitle);
});
function saveTitle(e){
// this line
e.stopPropagation();
var parent = $(this).closest('.block');
var title = $('.title', parent);
var edit = $('.title-edit', parent);
title.show();
edit.hide();
title.text($('.title-edit input').val());
}
function editTitle(e){
$('.title-edit', this).show();
$('.title', this).hide();
}
.title-edit{
display:none
}
<script src="https://code.jquery.com/jquery-1.12.4.min.js"></script>
<div class="block">
<div class="title">Title</div>
<div class="title-edit">
<input type="text" name="title" value="Title">
<button>Save</button>
</div>
</div>

The issue as mentioned already is that your click events are fighting. In your code, the title-edit class is within the block, so when you click on the save button it triggers events for both clicks.
The easiest and, imho, cleanest way to resolve this is to switch your click event to be called on .title, and .title-edit button. You can also simplify the code beyond what you've got there.
$(function(){
$('.title').click(editTitle);
$('.title-edit button').click(saveTitle);
});
function saveTitle(){
$('.title').show();
$('.title-edit').hide();
$(title).html('abcd');
}
function editTitle(){
$('.title-edit').show();
$('.title').hide();
}
https://jsfiddle.net/ywezpag7/7/

I tried debug your code, and I had seen, that then you click to "Save" button, handled both functions, saveTitle() and editTitle(), and in that order. Therefore, the elements initially hidden, and then shown.

Can't figure out adding/removing classes with jquery

I need help with this JS code for my wordpress theme.
First part is when it looks for h4 heading and if it has certain text it wraps all paragraphs below this h4 into div (which hides all paragraphs into fading section) and adds "button" (which is span):
var tutustu = 'TUTUSTU';
var syvenny = 'SYVENNY';
$('.article_content h4').each(function(){
if($(this).text() == tutustu)
{
$(this).nextUntil("h4").wrapAll('<div class="expand" />').parent().append('<span id="expand">show more</span>');
}
else if($(this).text() == syvenny) {
$(this).nextUntil("h4").wrapAll('<div class="expand" />').parent().append('<span id="expand">show more</span>');
}
});
Second is when user clicks on "button" div (that we wrapped into all paragraphs early) will get another class (to basicaly reveal all the paragraphs) and remover button:
$('span#expand').click(function() {
$(this).parent('.expand').removeClass('expand').addClass('expanded');
$(this).remove();
});
What I need is after paragraph text is revealed I want to have button to click on and everything goes back like in 1st part.
I came up with something like this:
$('span#expanded').click(function() {
$(this).parent('.expanded').removeClass('expanded').addClass('expand');
});
But it doesn't work (
Help is much appreciated

Use event Delegation and .toggleClass() instead of .addClass() and .removeClass()
$(document).on("click" , "span#expanded" , function() {
$(this).parent().toggleClass('expanded expand');
});

$('#expanded').on('click', function(e) {
$(this).parent().toggleClass('expanded expand');
e.preventDefault();
});

Jquery click - thinks its the parent element, not the child

When I click on a child element inside a div (the 'butMedWhite ' class) - the jquery thinks that I am clicking on the parent element ('.alternative') - even when I dump 'this' inside the console it says i have clicked on the class 'alternative' (see code below) - not the 'butMedWhite ' class - does anyone have any ideas why?
Here is the html:
<div class="alternative _activeCategory">
<div class="alternative_inner"></div>
<div class="expandable" style="display: block;">
<div class=" criteriaContainer">
<a class="butMedWhite altCreator">add rule</a>
</div>
</div>
</div>
and here is the jquery:
$('.altExpander').on('click', '.alternative', function(e) {
console.log(this);
if(!$(this).hasClass('_activeCategory')){
expandCategory($(this));
}else{
closeCategory();
}
});
Thanks for any help!

jQuery provides as context to your callback the element on which you bound the event handler, just like the native DOM functions.
If you want the clicked element instead, don't use this but e.target :
$('.altExpander').on('click', '.alternative', function(e) {
var clicked = $(e.target);
console.log(clicked);
if(!clicked.hasClass('_activeCategory')){
expandCategory(clicked);
}else{
closeCategory();
}
});

That's because your selector is ".alternative" in this line:
$('.altExpander').on('click', '.alternative', function(e)
If you want this to be the anchor tag, you need to use
$('.altExpander').on('click', '.alternative a', function(e)

Show div once clicked and hide when clicking outside

I'm trying to show the #subscribe-pop div once a link is clicked and hide it when clicking anywhere outside it. I can get it to show and hide if I change the:
$('document').click(function() {
TO
$('#SomeOtherRandomDiv').click(function() {
HTML:
<div id="footleft">
Click here to show div
<div id="subscribe-pop"><p>my content</p></div>
</div>
Script:
<script type="text/javascript">
function toggle_visibility(id) {
var e = document.getElementById("subscribe-pop");
if(e.style.display == 'block')
e.style.display = 'none';
else
e.style.display = 'block';
}
}
$('document').click(function() {
$('#subscribe-pop').hide(); //Hide the menus if visible
});
$('#subscribe-pop').click(function(e){
e.stopPropagation();
});
</script>

You have to stop the event propagation in your container ('footleft' in this case), so the parent element don't notice the event was triggered.
Something like this:
HTML
<div id="footleft">
<a href="#" id='link'>Click here to show div</a>
<div id="subscribe-pop"><p>my content</p></div>
</div>
JS
$('html').click(function() {
$('#subscribe-pop').hide();
})
$('#footleft').click(function(e){
e.stopPropagation();
});
$('#link').click(function(e) {
$('#subscribe-pop').toggle();
});
See it working here.

I reckon that the asker is trying to accomplish a jquery modal type of display of a div.
Should you like to check this link out, the page upon load displays a modal div that drives your eye into the center of the screen because it dims the background.
Moreover, I compiled a short jsFiddle for you to check on. if you are allowed to use jquery with your requirements, you can also check out their site.
Here is the code for showing or hiding your pop-up div
var toggleVisibility = function (){
if($('#subscribe-pop').is(":not(:visible)") ){
$('#subscribe-pop').show();
}else{
$('#subscribe-pop').hide();
}
}

Changing $(document).click() to $('html').click() should solve the main problem.
Secondly, you do not need the toggle_visibility() function at all, you can simply do:
$('#subscribe-pop').toggle();
Ref: changed body to html as per this answer: How do I detect a click outside an element?