Develop Reference

JQuery - Detecting which div box was clicked

I'm trying to detect which div box was clicked with JQuery and I'm not sure what I am doing wrong. I'm aware that I can approach this in a different method by directly calling functions if a div box is clicked, but I wish to do it this way by first determining what was clicked.
$(document).ready(function() {
$(document).click(function(event){
var id = event.target.id; //looks for the id of what was clicked
if (id != "myDivBox"){
callAFunction();
} else {
callSomeOtherFunction();
}
});
});
Thank you for any suggestions!

You could use the closest function to get the first ancestor element with tag div, see following example:
$(document).ready(function() {
$(document).click(function(event){
var parentDiv = $(event.target).closest("div");
console.log(parentDiv.prop("id"));
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="div1">
<span id="span1">Test1</span>
</div>
<div id="div2">
<span id="span2">Test2</span>
</div>
I hope it helps you. Bye.

No matter what you click, you will always know the element that was clicked:
$("#myDiv").click(function(e){
alert("I was pressed by " + e.target.id);
});
Knowing that you don't want to add this to every div, and you have your click on your document, you'll need to figure out what divs can be reported as "clicked".
In order to do this you'll either need a strict hierarchy of elements in your DOM (which is anoyingly bad) or you can decorate "clickable" div's with a specific class.
Fiddle - similar to below. https://jsfiddle.net/us6968Ld/
I would use closest in Jquery to get the result you want.
$(document).ready(function() {
$(document).click(function(event){
var id = event.target.id;
var clickDiv = $(event.target).closest('div[class="clickable"]');
alert(clickDiv[0].id);
})
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<div class="clickable" id="clickable1">
<span id="foo"> click me - Foo - clickable 1</span>
</div>
<div id="notClickable1">
<div class="clickable" id="clickable2">
<span id="span1">
Click Me Inside Span 1 - clickable 2
</span>
</div>
<div class="clickable" id="clickable3">
<div id="notClickable2">
<div id="notClickable3">
<span id="click me">Click Me - clickable 3</span>
</div>
</div>
</div>
</div>

try this:
$('div').click(function() {
alert($(this).attr('id'));
});
https://jsfiddle.net/1ct0kv55/1/

Get id of main div using JavaScript

How can I get the div id for a button and identify whether it's within one of two possible ids? For example, we have a call-to-action button that could be inside a div with the id="new" or id="current". Here are a few examples:
<div id="new">
Download
</div>
or
<div id="current">
Download
</div>
It's possible the id could be in a parent or parent's parent div, such as this:
<div id="new">
<div class="something">
Download
</div>
</div>
or this:
<div id="new">
<div class="row">
<div class="col-md-6">
Download
</div
</div>
</div>
We'd like our landing page developers to be able to develop the pages without having to ever touch the JavaScript for this functionality. We're ultimately trying to pass along this value in a URL string, such as this:
fileref.setAttribute("src", "https://oururl.html?cStatus=" + cStatus);

Make this slight modification: onclick="cStatus(this)" and then:
function cStatus(elem) {
var els = [];
while (elem) {
els.unshift(elem);
elem = elem.parentNode;
if (elem.id == "new") {
// has new
break;
} else if (elem.id == "current") {
// has current
break;
}
}
}

In the onclick callback you can get the parent element using $(this).parent() and then check its id.

Working on DOM elements, finding next class

I have problem with working on DOM elements.
This is my HTML:
<div class="movie__feature">
▲
</div>
<div class="movie__images">
<span class="similarity_points">9</span>
<a href="http://www.filmypodobnedo.pl/Top-Gun/" title="Filmy podobne do Top Gun">
<img alt="Filmy podobne do Top Gun" src="http://www.filmypodobnedo.pl/photos/Top-Gun.jpg"/>
</a>
</div>
<div class="movie__feature">
▼
</div>
</div>
When I click on .plus class, I need to go to .similarity.
This is my jQuery:
$('.plus').click(function(e){
e.preventDefault();
var self = $(this);
self.closest('div').find('.similarity_points').text('10');
}
How my num should look?

The closest div doesn't contain .similarity_points as a descendent. You could use this:
self.closest('div').parent().find('.similarity_points').text('10');
But, be aware that code which is highly dependant on the structure of the DOM is also fragile.

In your code you are going up to .movie__feature, and then you are looking for children with the .similarity_points class.
You need to go up one more level and then look for the child element:
$('.plus').click(function () {
$(this).closest('div').parent().find('.similarity_points').text('10');
return false;
});

Javascript onmouseover and onmouseout

You can see in the headline what it is. I've four "div", and therein are each a p tag. When I go with the mouse on the first div, changes the "opacity" of the p tag of the first div. The problem is when I go on with the mouse on the second or third "div" only changes the tag "p" from the first "div". It should changes the their own "p" tags.
And it is important, that i cannot use CSS ":hover".
The problem is clear, it is that all have the same "id".
I need a javascript which does not individually enumerated all the different classes.
I' sorry for my english.
I hope you understand me.
My script:
<div onmouseout="normal();" onmouseover="hover();" >
<p id="something">LOLOL</p>
</div>
<div onmouseout="normal();" onmouseover="hover();" >
<p id="something">LOLOL</p>
</div>
<div onmouseout="normal();" onmouseover="hover();" >
<p id="something">LOLOL</p>
</div>
<div onmouseout="normal();" onmouseover="hover();" >
<p id="something">LOLOL</p>
</div>
Javascript:
function normal() {
var something = document.getElementById('something');
something.style.opacity = "0.5";
}
function hover() {
var something = document.getElementById('something');
something.style.opacity = "1";
CSS:
p {
opacity: 0.5;
color: red;
}

As Paul S. suggests, you need to pass this to the function so that it knows which element it has to work on.
<div onmouseout="normal(this);" onmouseover="hover(this);" >
<p>LOLOL</p>
</div>
<div onmouseout="normal(this);" onmouseover="hover(this);" >
<p>LOLOL</p>
</div>
<div onmouseout="normal(this);" onmouseover="hover(this);" >
<p>LOLOL</p>
</div>
<div onmouseout="normal(this);" onmouseover="hover(this);" >
<p>LOLOL</p>
</div>
And then select the child element <p> for the passed <div>. Here I select the first child p, i.e. the first element in the array of children of this element with tag p, that's why you see [0]. So if in each div you had two paragraph, then you could use e.g. getElementsByTagName("p")[1] to select the second <p>.
function normal(mydiv) {
mydiv.getElementsByTagName("p")[0].style.opacity="0.5";
}
function hover(mydiv) {
mydiv.getElementsByTagName("p")[0].style.opacity="1";
}
See the working example here: http://jsfiddle.net/mastazi/2REe5/

Your html should be something like this:
<div onmouseout="normal(1);" onmouseover="hover(1);">
<p id="something-1">LOLOL</p>
</div>
<div onmouseout="normal(2);" onmouseover="hover(2);">
<p id="something-2">LOLOL</p>
</div>
<div onmouseout="normal(3);" onmouseover="hover(3);">
<p id="something-3">LOLOL</p>
</div>
<div onmouseout="normal(4);" onmouseover="hover(4);">
<p id="something-4">LOLOL</p>
</div>
As you can see, we have different ids for your elements, and we pass the ids through the function that we trigger with onlouseover and onmouseout.
For your javascript, your code could be something like this:
function normal(id) {
var something = document.getElementById('something-'+id);
something.style.opacity = "0.5";
}
function hover(id) {
var something = document.getElementById('something-'+id);
something.style.opacity = "1";
}
For normal() and hover() we receive an id and change the style for the current element that have this id.
Please, check this JSFiddle that I've built for you.

Why isnt my Jquery background image switching?

Heres my Jquery
$(".sectiontitle").click(function (e) {
$(this).next('div').slideToggle("slow");
el = $(this).find(".toggler > a.toggle");
currBg = el.css('background-image');
if (currBg == "url(http://blah/resources/img/close.gif)") {
currBg = "url(http://blah/resources/img/open.gif)";
console.log('open gif');
}
else {
currBg = "url(http://blah/resources/img/close.gif);"
console.log('close gif');
}
console.log(currBg);
el.css('background-image', currBg);
return false;
});
Heres my HTML panel (of which there are many)
<div class="majorsection">
<div class="sectiontitle">
<h2>Restaurant Bookings</h2>
<div class="toggler">
<a title="click to hide" class="toggle" href="http://blah/index.php/console/index"><span>-</span></a>
</div>
<div class="clear"></div>
</div>
<div class="msectioninner">
<div class="minorsection">
<div class="sectionlist">
<div class="section"></div>
</div>
<div class="sectionoptions">
<div class="clear"></div>
</div>
</div>
</div>
</div>
The image switches on the first click and the panel slides all cool both ways but the image doesn't change back

Why not use two css classes instead.
It will make the code much cleaner and maintainable.
Failing that one thing to try is to change
.css('background-image', currBg)
to
.css('backgroundImage', currBg)
I remember there was an issue with this (but thought it had been fixed). If this does not work have you got a url showing the issue?

Have you tried console.log(currBg); right after you retrieve it? The url() property may be getting rewritten/resolved. Not sure - but a similar problem arises if you are testing the .attr('src') of an image - it might not be what you set it to anymore.
A suggestion though: Rather than hard coding the background-image values, consider doing something like:
$(document).ready(function(){
$('a.toggle').addClass('closed');
$(".sectiontitle").click(function(e){
$(this).next('div').slideToggle("slow");
el = $(this).find(".toggler > a.toggle");
// jQuery 1.3 has this:
// el.toggleClass('.closed');
// otherwise - use this:
if (el.is('.closed'))
{
el.removeClass('closed');
} else {
el.addClass('closed');
}
return false;
});
});
Then your a.toggle picks up the background-image property of the "open" and a.toggle.closed gets the "closed" image in your CSS files.