Develop Reference

jQuery Preloader with min-time

Heyo,
I was wondering if there would be a way to set a min-time to an onload function so that the div is shown min 2sec. Basicly the same as with min-width or min-height. If the site is taking longer than 2sec to load, the div will still be shown untill the site is fully loaded but when the site takes less than 2sec to load the div will still be displayed for a minimum of 2sec.
Here is my current code:
$(window).on('load', function() {
$('.preloader').delay(350).fadeOut('slow');
});

Try this:
$(window).on('load', function() {
setTimeout( function(){
$('.preloader').fadeOut('slow');
}, 2000 )
});

So I take it you want a function to be run when either: the page loads or after 2 seconds, whatever comes later.
First, define a function to be called:
function load_func() {
$('.preloader').delay(350).fadeOut('slow');
}
Then, let's define a way to call the function in either situation:
var pageLoaded = false;
var timeoutElapsed = false;
$(window).on('load', function() {
pageLoaded = true;
if (timeoutElapsed) {
load_func();
}
});
setTimeout(function() {
timeoutElapsed = true;
if (pageLoaded) {
load_func();
}
}, 2000);
This way, if the page loads before 2 seconds, it will wait the timeout to call the function.
Otherwise, if the page loads after 2 seconds, it will call it whenever that load event happened.

dojo for content from ajax call

The case:
I use dojo to request a page and load it into a div ( view ).
The problem:
The content that gets loaded into a form contains a dojo form and relevant objects, textbox, etc... how can I controller these widgets? I believe the current way I am working around the issue is sloppy and could be more refined.
Comments are in the code to help explain the issue I have. Please let me know your thoughts.
function (parser, domAttr, util, ready, dom, on, request, domStyle, registry, TextBox) {
//This prepares the doc main html page We are looking for a click of a menu option to load in thats pages pages content
ready(function () {
//Look for click of menu option
on(dom.byId('steps'), "a:click", function(e) {
event.preventDefault();
//Get the div we are going to load the page into
var view = domAttr.get(this, "data-view");
// function that loads the page contents
load_page(view);
});
});
function load_page(view) {
//First I see if this page already has widgets and destroy them
//We do this so users can toggle between menu items
// If we do not we get id already registered
var widgets = dojo.query("[widgetId]", dom.byId('apply-view')).map(dijit.byNode);
dojo.forEach(widgets, function(w){
w.destroyRecursive();
});
//get the html page we are going to user for the menu item
request.post("/apply_steps/"+view, {
data: {
id: 2
}
}).then(
function(response){
//Add the content and parse the page
var parentNode = dom.byId('apply-view');
parentNode.innerHTML = response;
parser.parse(parentNode);
//This is where it is sloppy
//What I would prefer is to load a new js file the controlls the content that was just loaded
//What happens now is I create a traffic director to tell the code what main function to use
controller_director(view);
},
function(error){
util.myAlert(0, 'Page not found', 'system-alert');
});
}
function controller_director(view) {
//based on the view switch the function
switch(view) {
case 'screening_questions':
screening_questions();
break;
}
}
function screening_questions() {
//Now we are controlling the page and its widgets
// How would I get this info into a seperate js file that i would load along with the ajax call??
ready(function () {
on(dom.byId('loginForm'), "submit", function(e) {
event.preventDefault();
var formLogin = registry.byId('loginForm');
authenticate();
});
});
this.authenticate = function() {
var formLogin = registry.byId('loginForm');
if (formLogin.validate()) return;
}
}
});

Two javascript functions won't work at the same time

I have one script that shows a tooltip on click and the other script shows a menu after a certain point in the page.
If the menu doesn't load, then I can click on the buttons to show the tooltips just fine. But when the menu does show up, the tooltips script doesn't show anymore.
<script>
$(document).ready(function() {
$('#left-tooltip').click(function() {
$('#lollefttooltip').toggle();
});
});
$(document).ready(function() {
$('#right-tooltip').click(function() {
$('.right-tooltip').toggle();
});
});
</script>
<script>
$(function() {
$(window).scroll(function() {
if ($(this).scrollTop() > 650) {
$("#nav-block:hidden").css('visibility', 'visible');
$("#nav-block:hidden").fadeIn('650');
$("#nav-wrap:hidden").css('visibility', 'visible');
$("#nav-wrap:hidden").fadeIn('650');
$("#header-wrap:hidden").css('visibility', 'visible');
$("#header-wrap:hidden").fadeIn('650');
} else {
$("#nav-block:visible").fadeOut("650");
$("#nav-wrap:visible").fadeOut("650");
$("#header-wrap:visible").fadeOut("650");
}
});
});
</script>
Thanks in advance for the help!
update: Here is all the code I have for this. http://jsfiddle.net/parachutepenny/82J6G/11/
I'm sorry in advance for any beginner errors that I may have all over the place. I'm still learning how to code.

This doesn't answer your question, but there are some great opportunities to optimize here. Aside from best practice, they may also sort out the bugginess. Something like:
$(document).ready(function() { // combine doc.ready
var win = window, // store window as a variable
$bod = $('body');
$('#left-tooltip').click(function() {
$('#lollefttooltip').toggle();
});
$('#right-tooltip').click(function() {
$('.right-tooltip').toggle();
});
$(win).scroll(function() {
if (win.scrollY > 650) { // use scrollY from window variable so you're not retrieving from the DOM
$bod.addClass('navVisible'); // use classes on body to trigger CSS transitions on the children
} else {
$bod.removeClass('navHidden');
}
});
});

Put your multiple click function into single ready function.It may cause readability problem.
Follow this link.
Multiple document.ready() function

Toggle AJAX request

I have the following code which loads content into a div, then fades in:
$('a.search').click(function(){
$('.pop-up').load('search.php', function(){
$(this).fadeToggle();
});
});
However, I'm assuming this is making a request each time the a.search is clicked, if it is a toggle?
Is there a more economic way to achieve this toggle without making multiple calls?

Implement the toggle in your own code instead of using .fadeToggle.
$('a.search').click(function(){
if ($('.pop-up').is(':visible')) {
$('.pop-up').fadeOut();
} else {
$('.pop-up').load('search.php', function(){
$(this).fadeIn();
});
}
});

You can check for one time loading by setting a global variable.Assuming that your pop-up div style is set to display:none, example code is provided below:
var isPopUpLoaded = false;
$('a.search').click(function(){
if(isPopUpLoaded==false){
$('.pop-up').load('search.php', function(){
isPopUpLoaded = true;
});
}
$('.pop-up').fadeToggle();
})
;

when is triggered AJAX success?

I want load some HTML document by AJAX, but I want to show it when all images in this document are loded.
$('.about').click(function () {
$(".back").load('Tour.html', function () {
$(".back").show();
});
});
".back" should be visible when all images in Tour.html are loaded, when is triggered a success event??

$(".back").load('Tour.html', function (html) {
var $imgs = $(html).find('img');
var len = $imgs.length, loaded = 0;
$imgs.one('load', function() {
loaded++;
if (loaded == len) {
$(".back").show();
}
})
.each(function () { if (this.complete) { $(this).trigger('load'); });
});
This requires at least one <img> in the returned html.

What I would suggest is to use an iframe instead. Here is some sample code in plain JavaScript:
var ifr=document.createElement("iframe");
ifr.style.display="none";
document.body.appendChild(ifr);
ifr.onload=function() {
// Do what you want with Tour.html loaded in the iframe
};
ifr.src="Tour.html";

ImagesLoaded is what you are looking for.
Place all code (ajax request in this case), when the images specified are loaded.
The plugin specifies why you cannot use load() on cached images