Develop Reference

Generate Bootstrap tooltip on-the-fly

I have a page with a text and some words in the text can change dynamically. These words have an element and should have a tooltip. When the user hovers the word (or I guess on a touch device clicks it), a tooltip should be generated using generateSpecialMarkupElement($(element).text()). Once the HTML has been rendered to the DOM another JavaScript function has to be called replaceMarkupHTML().
I don't have control over these functions unfortunately.
Now I'm wondering if there is a simple way in bootstrap get this done. For instance a before event to run the first function and an after event to call the second one.
Here is a simple example text and simplified versions of the functions:
http://jsfiddle.net/8aqz5auk/1/
So is there a bootstrap-way of hooking/intercepting this kind of thing? Or is there maybe another simple way it could be done?
Edit: I just had an idea. When bootstrap shows a tooltip, it seems to inject an element into the DOM. The interesting part is the container with the class 'tooltip-inner'. So I tried to listen on the body for new elements matching '.tooltip-inner' to be injected and whenever that happens I try to manipulate it:
$('body').on('DOMNodeInserted', '.tooltip-inner', function () {
var el = $(this)
el.html("") // empty the tooltip element
el.append(generateSpecialMarkupElement(el.text())) // insert the generated markup element
replaceMarkupHTML() // replace the markup element with normal html
});
Unfortunately it doesn't work. It just throws a a million errors and the site freezes when I try it.
Edit 2:
Thanks to Chris Barr, I got a little bit closer: http://jsfiddle.net/8aqz5auk/2/
But the tooltip doesn't always show up and the position of the tooltip seems to be kind of wrong (shows up on top of the word, rather then next to/above/below/...).

You might want to look into the tooltip events listed in the docs: https://getbootstrap.com/docs/3.3/javascript/#tooltips-events
$('.elements-with-tooltips').on('show.bs.tooltip', function () {
// do something…
})
You can run a function: before being shown, after being shown, before hiding, after hiding, and when the element is inserted into the DOM.

jQuery Mobile "enhance" dynamically re-generated html

jQuery Mobile 1.2.0
I generate the HTML using JavaScript ($(selector).html(content)), add it to the DOM and then display it ($.mobile.changePage()).
Then I invoke an AJAX call, get some data, and re-generate the html (but the parent element, the same $(selector), stays the same, I just change its html(...)).
At this poing the HTML is not "enhanced" by jQM, no styling applied on it.
Now according to the docs I should simply call the page() function on the parent element, i.e $(selector).page().
Other places in the docs suggest triggering the create event, i.e $(selector).trigger("create").
The problem is that non of the above two methods works - the styling of jQM is not applied.
Looking at the code of jQM, I've tried triggering the pagecreate event on that element and it does work, but, this is not documented anywhere, so I'm uncertain of it, especially concerning future releases of jQM.
At some poing in the docs I've read that I can call page() on a page only once..
Anyway, is there any concise/standard way to tell jQM to "enhance" the whole element and its child-elements? Or should I simply stay with triggering the pagecreate event?
Thank you!

To recreate a whole page use this:
$(selector).trigger("pagecreate");
This was my answer to a simmilar question: https://stackoverflow.com/a/14011070/1848600. There's an example of page recreation. Take a look, this should probably solve your problem.

What is the scope of
$(selector).trigger("create");
You should be able to add any elements on the 'pagecreate' event which comes right before 'pageshow' jqm styling is applied to elements. For example I dynamically add a header/footer like this
$(document).on('pagecreate', "[data-role=page]", function() {
var header = "<div data-role='header'>some header stuff</div>";
var footer= "<div data-role='footer'>some footer stuff</div>";
$(this).prepend(header);
$(this).append(footer);
$("[data-role=header]").fixedtoolbar({tapToggle: false});
$("[data-role=footer]").fixedtoolbar({tapToggle: false});
});
Make sure you're using jquery 1.7 or above I think that's when the on method was introduced;
It sounds like you may be generating the DOM and then changing the page, try it the other way around go to the page first then dynamically edit the dom.
EDIT
set the reload page option to true
$.mobile.changePage($(page), {reloadPage: true});
Edit 2
$(selector).children().each(function(){
$(this).trigger('create');
})

If ID has class, set attribute of another element

I'm trying to detect if a class is present and, if so, set the background attribute of another element. This is what I have but it's not working.
if(jQuery("#slider-banner").hasClass('living-nutrients'))
{
jQuery("#home-middle-first").css("background-image","[path to new background image]");
}
BTW - My next step is for this to detect it whenever the ID "slider-banner" changes, but so far I can't even get it to work once on page load. Any help would be greatly appreciated... Thanks!
EDIT: I changed from .attr to .css as instructed. Makes sense... but still not working. I've tried adding console.log message within the IF statement and got nothing also. Does that give anyone any more ideas?
Example HTML where class changes:
<img id="slider-banner" class="living-nutrients" src="[image path]">
Example HTML where I want to change background image:
<div class="home-middle-one-third" id="home-middle-first">
</div>
UPDATE:
For everyone who said it "should work"... you are right! Turns out that, as written, it doesn't like being in the footer of the page, but when I moved it to the head, presto!
The final piece of this puzzle is to have it detect and evaluate based on the #slider-banner changing, (or more accurately, which class is present for the ID'd area), not just the page loading, as is currently.
The ID is for one element of a slide within a slider. There are three possible classes I could assign to the ID depending on which slide is visible. So I need the script to evaluate every time a slide changes.
Any ideas? Thank you all!

background-image is a element's style property, not its own one.
So .css("background-image","[path to new background image]");

Almost!
if(jQuery("#slider-banner").hasClass('living-nutrients'))
{
jQuery("#home-middle-first").css("background-image","[path to new background image]");
}
css is the correct function to set a CSS attribute.
The attr will set an HTML attribute. <div attr='attr value'>
Edit
I'm kind of guessing about the functionality of your script here in the following example.
When you set the background-image of a HTML node, that's all it does is set the background image. You must also set the width and height accordingly, to all the node to be large enough to even see the background of the node. Background images will not automatically resize the node.
var slider = jQuery("#slider-banner"); // jQuery("#slider-banner") is slow, so we save it to a var if we use it more than once
console.log(slider); // should be this in Chrome: [<img id="slider-banner" class="living-nutrients" src="[image path]">]
if(slider.hasClass('living-nutrients'))
{
jQuery("#home-middle-first").css({
"background-image":"url("+slider.attr('src')+")", // url() for good meassures
//"background-image":slider.css('background-image'), //try this if that doesn't work
"height":slider.height(),
"width":slider.width()
});
}
Here is a working example.

Try this
jQuery("#home-middle-first").css("background-image","url([path])");

facebook homepage like pull down div

after logging on to facebook, there is a downward arrow symbol after home tab. On clicking it shows a div (?) which just appears on the existing content and on another click it disappears.
How can I make exactly such a thing?
Edit:
I followed this link from TheBlackBenzKid. One thing is clear, on clicking on the button, just 2 divs are toggled.
But AFAIK toggle takes place on mouse click. so the 'click' event should be there in the jquery code.
1) But I didn't find it. where is that?
2)there is some css that makes it possible for the menu to appear on a place without dislocating the existing content there( from the demo this is not visible, but it does happen actually). What is that css code?

There are so many ways to do these things: thefinishedbox.com/files/freebies/dropdown-gui/index.html this is a nice one that already comes with simple clean CSS look and feel

This is how i wouldve done it, but its a pretty basic solution.
div id="arrowid">▼</div>
<div id="dropdownbox" style="display:none;">Dropdownbox</div>
<script type="text/javascript">
$(document).ready(function() {
$('#arrowid').click(){
$('#dropdownbox').toggle();
});
});
</script>
this one does'nt support outside clicks, it just shows and hides when clicking the arrow. Hope it helps!

You can use .slideToggle() to achieve this effect, if you are using jQuery.
Use it to display or hide the matched elements with a sliding motion.
.slideToggle( [duration] [, easing] [, callback] )
duration: A string or number determining how long the animation will run.
easing: A string indicating which easing function to use for the transition.
callback: A function to call once the animation is complete.

Google AdUnit hiding

Has anyone figured how to manipulate the AdUnit element from google?
E.g. hiding, etc.?
So far I can change opacity and move it vertically, but only before the ads load.

Calling setPosition(null) on the AdUnit will remove it from the map. See http://code.google.com/apis/maps/documentation/javascript/reference.html#AdUnit

So I found solution myself:
var t=setTimeout("closeAdd()",2000);});
function closeAdd(){
$('#add').append('<span id="close_but">Close</span>');
$('#close_but').css('position','absolute');
$('#close_but').css('color','blue');
$('#close_but').css('top','0px');
$('#close_but').css('left','425px');
$('#close_but').click(function(){
$('#add').hide();});
}
Using jQuery I am adding the 'Close' span to the node containing the add. The actual placing depends on the format of the add unit, here I have "AdFormat.BANNER". Anyway, I also attach the click handler to the Close span which hides the add containing element.
BTW. delaying the manipulation is necessarry as google does strange manipulations with a node and untill the adds load completely.