Javascript for deleting DIV that blurs website - javascript

There is a website with the following div:
<div class="x" style="user-select: none; filter: blur(4px);">
under this div there are a lot of other divs. I would like to know if there is any possibility to delete only this DIV with javascript. So only that one gets deleted and all the divs underneath remain.
I want to get rid of this DIV becouse this div blurs an part of the website text. Just changing the blur(4px) wont work the website has some kind of protection what refreshes this part back to original.
the reason i am searching for an possibility in javascript is because i want to automate this in the browser.(Just deleting DIV manually under developer mode works)
so far i got the following:
var div = document.getElementsByClassName('page-content');
div.remove(); //(but this does not work)

getElementsByClassName() returns a collection. Only single objects have remove() method. You have to apply one of the following:
Use brackets to specify an index of the object you want to get:
div[0].remove()
Use item() method passing the index as well:
div.item(0).remove()
Both ways are equivalent.
As an alternative, you may call querySelector() method:
const div = document.querySelector('.page-content')
It returns a single object (according to the passed CSS selector) so you can use:
div.remove()
Edit:
To remove only the covering div, you may use replaceWith() method and pass the child nodes of that div as an argument:
div.replaceWith(...div.childNodes)
If you want to keep only element nodes, use children property:
div.replaceWith(...div.children)

Related

Where could `appendTo()` be usable with an `htmlString`?

The API docs for appendTo list the method being able to select an HTML string for a target.
However, there seems to be no use to this since the set still includes the original elements, and the HTML string seems not to have been added anywhere in the DOM nor do I see a circumstance where it could be available.
var b = button.appendTo('<div>').appendTo('body');
b is a button, and yet it is not wrapped in a div or anything.
You can see this at http://jsfiddle.net/0dgLe5sj/
Where would it be useful to append to a HTML string (which doesn't yet exist on the page)?
appendTo() returns the item being appended.
So your code is:
var btn = button.appendTo('<div>');
btn.appendTo('body');
As you can see, you move it inside a div, then immediately move it inside the body. So you when you look at it at the end, it's inside the body.
Perhaps you meant:
var b = button.appendTo($('<div>').appendTo('body'));
which will append a div to the body and then append the btn to that div.
Updated fiddle: http://jsfiddle.net/0dgLe5sj/8/
or, if you wanted to add to the div first:
var b = button.appendTo("<div>");
b.parent().appendTo("body")
but if you combine it into a single line, you can't get the button back into the variable using .appendTo as you're adding the div to the body so you're going to get the div or the body back.
To address the 'where would this be useful part':
Being able to create detached DOM elements is extremely useful for parsing HTML strings and can also be used to 'batch' up some changes without forcing page redraws between.
Moving one button to a detached div and the back to the body doesn't have a lot of point, but it proves the principles.

Multiple show/hide scrollable containers

In my example here:
Example
JS
$('button').on('click', showHide);
$('.overlay').on('click', showHide);
function showHide(){
$('.scroll-container').toggleClass('show');
$('.content-container').toggleClass('no-scroll');
$('.overlay').toggleClass('opacity');
}
you have a basic body with text. A clickable element (in this case a 'button') causes a scrollable container to appear and 'hover' over the original body, which can be hidden again by clicking outside of this container.
I'm not very good at JavaScript and with this example I was helped by a friend. The thing I'm struggling with now is that I need multiple different clickable elements, displaying a similar scrolling container, but with different content.
I'm doing this for a portfolio website, so imagine a bunch of photos on a page, which when clicked result in a body hovering over the original content, further elaborating the clicked project.
Do I create multiple id's for each project, together with multiple scrolling container id's, and just copy the JavaScript a couple of times?
I hope this makes sense and I hope someone is capable of explaining to me how I'm able to create the proposed effect.
First of all, you have to make a connection between buttons and containers that should be opened. One way is to use their indexes, so that when first button is clicked, first container would open. You can use this reference of the clicked object inside your function, in order to get its index. Like this:
$(this).index()
Then, you have to select all the elements with scroll_container class $('.scroll-container') and reduce the set of matched elements to the one by passing index of the clicked element to .eq() method .eq($(this).index()). Finally, you have to add show class to it addClass('show').
And because the logic is changed, you have to separate actions done on button and .overlay click events. They do not make a reverse action now, so they are not "togglers" anymore.
http://codepen.io/anon/pen/LpWwJL
$('button').on('click', show);
$('.overlay').on('click', hide);
function show(){
$('.scroll-container').eq($(this).index()).addClass('show');
$('.content-container').addClass('no-scroll');
$('.overlay').addClass('opacity');
}
function hide() {
$('.scroll-container').removeClass('show');
$('.content-container').removeClass('no-scroll');
$('.overlay').removeClass('opacity');
}
UPDATE
One thing you should keep in mind regarding $(this).index() method.
As it is written here:
If no argument is passed to the .index() method, the return value is an integer indicating the position of the first element within the jQuery object relative to its sibling elements.
That means that trigger elements should have common parent in order to maintain our logic.
In cases like this: https://stackoverflow.com/posts/32946956/edit, elements that are triggering scroll_container appearance, have different parent nodes (they are placed in 3 different divs). So, if we will call index() method for each of them, it will return '0' because they are the first and the only elements in their parent nodes.
Actually it means that you have to get the order of their parent elements, not theirs own. This can be achieved by using parent() method before index():
$(this).parent().index()
Here is updated codepen.
If I were you, I would implement a generic function to display a different content using the same function based in the button. So for that we will need something to relational the click with the content for that we can set a value in out button:
<button data-id="1">Click me 1!</button>
<button data-id="2">Click me 2!</button>
so out when we click the button we should get the value to send it to our function:
$('button').on('click', function(){
var dataButtonValue = $(this).data('id');
});
Then we can match it with the content using for example data-content-id
<div class="content" data-content-id="1">your wording</div>
<div class="content" data-content-id="2">your wording</div>
With all that we can manage what content we want to show depends on the click.
function showHide(id){
$('.content[data-content-id="' + id + '"]').toggleClass('show');
}
DEMO
I hope it's helps.

Using filter() to filter jquery based on parents

I see on jquery documentation that I can use .parent() to filter my matched elements based on the parent. But in the process, the final result I get is the set of parent elements, not the original set of elements. So I see that I can use filter to achieve what I want. But I found so few documentation about how to use filter to filter based on the parent.
For example, my html is:
<div id="social">
Facebook<br/>
Twitter<br/>
</div>
<div id="topsites">
Facebook<br/>
Stack Overflow<br/>
</div>
I want to get a set of elements, which consist of <a> tag that has facebook in it's href attribute, but within the social div parents.
I suspect the code will be something like this:
$('a[href*="facebook"]').filter( ... ).click(function() {
});
But I have absolutely no idea what to put on the filter. "parent#social" ?
Another way to put it is to use filter function.
$('a[href*="facebook"]').filter(function(index) {
return ...
}
.click(function() {
});
I also don't know what code to put on the ... . Is it something like this.parent.id == "social" ? If possible, I prefer the first form, but if the solution can only be achieved by using the second form (filter function) then it's okay. Thank you very much.
.parent() doesn't filter, it traverses. It takes a jQuery object, that lists an array (of size [0, n) ), and generates a new jQuery object with each element's parent.
Getting a jQuery object with the list you're looking for is much simpler though...
CSS Selectors, which jQuery is based upon (with various extensions) are heirarchical by nature. That means selecting specific children of some parent(s) is quite trivial. a CSS selector to pick the element you want is:
#social a[href*="facebook"]
and if you use this inside a jQuery constructor, you'll get you object:
$('#social a[href*="facebook"]')
I want to get a set of elements, which consist of <a> tag that has facebook in it's href attribute, but within the social div parents.
No need of filter here,
$('#social a[href*="facebook"]')
will do.

jQuery load div into another without .html() method

I have a div (let's call it potatoes) that I want to appear inside another div (food). The typical way to do this would be:
$("#food").html ( $("#potatoes").html());
However this doesn't accomplish what I want. Instead of using the actual "potatoes" div, jQuery seems to be copying that content into the food div, where the original content still exist in the browser.
I want the ACTUAL div (potatoes) to disappear from its place and to appear in the container div (food) without having to do perform .hide() ... or similar methods.
Reason why? I have selectors that enable and disable buttons in the potatoes div, and they seem to trigger the original potatoes div content, but NOT the duplicate that has been loaded into the food div.
Does that make sense? Can anyone give insight as to why this is and what I should do?
Side note:
$(document).on('click','#button-loaded-with-page', {} ,function(e){
this.disabled = true;
$('#button-inside-potatoes-div').hide();
});
The above example is what I would like to achieve, but does NOT hide the button when the potatoes content has been loaded into food by the .html() method. Instead it hides the original button on the page, and not the duplicated one.
What I am trying to achieve: https://jsfiddle.net/o9kshscj/6/
You can just pass the object to html()
$("#a").html($("#b"));
Demo: Fiddle
You could use append to change the parent. This will move the #potatoes object out of it's current DOM position, into the #food div as a child
$("#food").append($("#potatoes"));
You can just remove the div after replacing like this:
$("#a").html($("#b").html());
$("#b").remove();
$("#button-to-enable").prop("disabled", false);

JQuery remove images

I'm curious if anyone knows why this piece of jQuery code doesn't remove the images?
var a = $('#tblMain').clone().remove('img');
The table is being selected. This is trying to take the table on the webpage and export to excel but I do not want the images to export.
Thank you,
Do it like this:
$("#tblMain").clone().find("img").remove();
EDIT: Okay, here's the problem:
selector: A selector expression that
filters the set of matched elements to
be removed.
http://api.jquery.com/remove/
The img in .remove('img') is to filter the set of items in the jquery object, NOT to find elements within the items themselves. In this case, the jquery object contains only one item, the cloned table. Therefore, .remove('img') removes nothing, since the jquery object does not contain any images (only images within items it contains).
I don't know what's happening behind the scenes, but you're referring to some variable called img whilst you most probably just want to select all img elements. In that case, you ought to use a selector as a string:
var a = $('#tblMain').clone().remove('img');
EDIT: .clone.remove does not seem to work indeed. I used this workaround which actually works:
.find('img').each(function() {$(this).remove()});

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