load() function issue on preloader - javascript

I've an issue with jQuerys .load() and would to ask for some help. I'm using load for firing a function after the site is loaded. I'm using a small image-preloading script
function preload(arrayOfImages) {
$(arrayOfImages).each(function(){
$('<img/>')[0].src = this;
});
}
preload([
'img/about_1.gif',
'img/contact_1.png',
// and much more images
]);
and some pictures in the body who don't need to be preloaded.
What I am trying to achieve is, to fire a function after the site has been completely loaded. Like this:
$(document).ready(function() {
$(window).load(function () {
console.log("all loaded");
$('#curtain').animate({top: '-=1000px'}, 'slow', 'linear', function() { $(this).remove(); });
$('#loading').animate({top: '-=1000px'}, 'slow', 'linear', function() { $(this).remove(); });
});
});
unfortunately it does fire before the whole page is loaded. Is there something I have to know about .load() and why it does not work?
Thanks

Related

smoothState.js conflicting with other plugins

I have managed to implement the smoothState.js plugin on my website and it works nicely, but my other very simple jQuery plugin will not work, wich starts with:
$(document).ready()
I need to refresh the page in order for it to work again.
I've read the smoothState documentation and it says I should wrap your plugin initializations in a function that we call on both $.fn.ready() and onAfter — but I'm farely new to programming, so I'm asking for your help.
How can I make my jQuery plugins work with smoothState?
You need to wrap scripts that are initiated with $(document).ready() in a function, and then call that function when you need it.
For example, let’s say this is your current script:
$(document).ready(function() {
$('.btn--homepage').click(function(e) {
e.preventDefault();
var goTo = $(this).attr('href');
$('#page').addClass('is-exiting');
$(this).addClass('exit-btn');
setTimeout(function() {
window.location = goTo;
}, 260);
});
});
It’ll work fine when the page loads as it’s wrapped in $(document).ready(function()), but as the page won’t be reloading when using Smoothstate, we need a way to call the snippet both when the page originally loads and when smoothstate loads content. To do this we’ll turn the above snippet in to a function like this:
(function($) {
$.fn.onPageLoad = function() {
$('.btn--homepage').click(function(e) {
e.preventDefault();
var goTo = $(this).attr('href');
$('#page').addClass('is-exiting');
$(this).addClass('exit-btn');
setTimeout(function() {
window.location = goTo;
}, 260);
});
};
}(jQuery));
As you can see, we’ve swapped $(document).ready(function()) with the function wrapper, everything else stays the same.
So now we’ve got a function all we need to do is call it when the page loads and in Smoothstate.
To call it when a page loads all we need to do is this:
$(document).ready(function() {
$('body').onPageLoad();
});
And to trigger it in Smoothstate we need to call it in the InAfter callback like this:
onAfter: function($container) {
$container.onPageLoad();
}
And here's an example Smoothstate script showing where to put the onAfter callback:
$(function() {
var $page = $('#main');
var options = {
prefetch : true,
pageCacheSize: 4,
forms: 'form',
scroll: false,
onStart: {
duration: 1200,
render: function($container) {
$container.addClass('is-exiting');
smoothState.restartCSSAnimations();
}
},
onReady: {
duration: 0,
render: function($container, $newContent) {
$container.removeClass('is-exiting');
$container.html($newContent);
$('html, body').scrollTop(0);
}
},
onAfter: function($container) {
$container.onPageLoad();
}
};
var smoothState = $('#main').smoothState(options).data('smoothState');
});
Happy to provide further assistance if needed.

What's wrong with my jquery syntax and formating?

What's wrong with this code? Probably a lot cus I'm new to jquery. I'm trying to fadeIn the page then fade the background to a different one the fade up and in the nav and set it up so the links will fade the page out and bring in the new page. The code I have now isn't quite working and I think some syntax and formatting is the problem.
$(document).ready(function() {
$('body').fadeIn(1500);
});
$('#background').addClass('background');
setTimeout(function() {
$('#background').addClass('background-blured');
}, 1500);
$("h1").delay(2000).animate({
top: -50,
opacity: 1,
}, 700, function() {
// Animation complete.
});
$('.link').click(function() {
event.preventDefault();
newLocation = this.href;
$('body').fadeOut(500, newpage);
});
function newpage() {
window.location = newLocation;
}
});
Thanks!
$(document).ready triggers as soon as the DOM is fully loaded. Any javascript outside of the $(document).ready block is run while the browser is still loading the page. so if your $('#background') element is not yet loaded to the DOM jQuery cannot add the 'background' class to it. And more than likely only some of your $('.link') elements will have the click event listener added since they weren't yet loaded when the javascript ran. That's why you should embed such things inside the $(document).ready function.
$(document).ready(function() {
$('body').fadeIn(1500);
$('#background').addClass('background');
setTimeout(function() {
$('#background').addClass('background-blured');
}, 1500);
$("h1").delay(2000).animate({
top: -50,
opacity: 1,
}, 700, function() {
// Animation complete.
});
$('.link').click(function() {
event.preventDefault();
newLocation = this.href;
$('body').fadeOut(500, newpage);
});
});
function newpage() {
window.location = newLocation;
}
Notice with proper indentation you can easily see what is inside the $(document).ready function. Also notice you don't put standard functions like your newpage() function inside the $(document).ready.

JavaScript failing on page postback

I have got this script to give effects to buttons which i have, it fails after the page is posted back, i have also put the code in a pageLoad method yet it still does not function. any idea how i can go about making this script run once the page has loaded.
$(document).ready(function () {
/*preloader for image loading bar*/
jQuery(function ($) {
function preLoad() {
//alert("script running");
$("#divQuestionMatrix").addClass("hidden");
}
function loaded() {
$("#divQuestionMatrix").removeClass("hidden");
$('div#preLoader').css({ display: 'none' }).remove();
}
preLoad();
window.onload = loaded;
});
/* End of preloader*/
$("#btnPrevious").click(function (e) {
$("#navigation").val("previous");
}
);
$("#btnNext").click(function (e) {
$("#navigation").val("next");
}
);
/* $(".qmatrix").click(function () {
//get id of button
alert($(this).attr('id'));
$("#navigation").val($(this).attr('id'));
}
);*/
$(".qmatrix").hover(function (e) {
//get id of button
//alert($(this).attr('id'));
//get src of image before hover
var origimage = $(this).attr('src');
// alert(origimage);
//$(this).attr({ src: 'images/questionMatrix/100' + $(this).attr('id') + '.png' });
$(this).stop().animate({ "opacity": "0.1" }, "fast")
},
function () {
// $(this).attr({ src: '' + origimage.toString() + '' });
$(this).stop().animate({ "opacity": "1" }, "fast");
}
);
The document.ready event is fired once the page has finished loading.
Inside the handler for the ready event, you're then using the ready event shortcut (passing a function directly to the global jQuery function (which is the same as the global $ function btw) to add another handler function for the ready event.
Inside this second ready handler you're then trying to assign the loaded function to window.onload, which would have already fired by this point.
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
Put this Latest Jquery Library Just just above to your document.ready() function and try to run your program.

How can I edit this Javascript without blocking functionality?

So I inherited some code that I am trying to customize and I've hit a roadblock. I believe this little piece of code is the issue:
jQuery(function($){
var photos = [
'cover/001_final.jpg',
'cover/002_final.jpg',
'cover/003_final.jpg',
'cover/004_final.jpg',
'cover/006_final.jpg',
'cover/007_final.jpg',
'cover/008_final.jpg',
'cover/009_final.jpg',
'cover/044_final.jpg',
'cover/085_final.jpg',
'cover/123_final.jpg' ]
$.backstretch(photos[Math.floor(Math.random() * photos.length)]);
$(document.body).on("backstretch.show", function () {
$('body').addClass('load');
});
$('.nav-link a')
.hover(
function() { $(this).addClass('hover'); },
function() { $(this).removeClass('hover'); })
.click(function(){
$(this).removeClass('hover');
});
});
If I understand correctly, this script is randomly loading the backgrounds and then stretching the images and then loading the menu...
..I would like to use the menu feature on another page that does not require a stretched background, how can I remove the dependency on the background loading/stretching and just load the menu?
Thanks in advance.
Try using :
$(function () {
$('body').addClass('load');
});
Instead of :
$(document.body).on("backstretch.show", function () {
$('body').addClass('load');
});

jQuery delay between animations

I have two elements that shouldn't be active at the same time, so when one is toggled I fade the other out, however I would like to be able to fade the open element out and then bring the other one in. Is there a way to do this that isn't a hack?
<script ="text/javascript">
$(function() {
$('#jlogin').click(function() {
$('#login').toggle('fast');
$('#reg').fadeOut('fast');
});
$('#jreg').click(function() {
$('#reg').toggle('fast');
$('#login').fadeOut('fast');
});
});
</script>
That is my current script.
Look at using the callback mechanism for fadeOut so you can chain the animations. The callback on the animation methods are called after the previous animation is complete.
<script type="text/javascript">
$(function() {
$('#jlogin').click(function() {
$('#reg').fadeOut('fast', function() {
$('#login').toggle('fast');
});
});
$('#jreg').click(function() {
$('#login').fadeOut( 'fast', function() {
$('#reg').toggle('fast');
});
});
});
</script>

Categories