I have this code that changes the image when a user rolls over a map area on my United States map. It is working perfectly. But I want the the images to have a smooth appearance and then a gradual fade away. What do I need to add to this code? Thanks!
$(document).ready(function() {
//set off state
var nav_off = "/images/state-map.png";
// functions for over and off
function over(image) {
$("#main-nav").attr("src", image);
}
function off() {
$("#main-nav").attr("src", nav_off);
}
$("#imagemap area").hover(
function () {
var button = $(this).attr("id");
over("/images/state-" + button + ".png");
},
function () {
off();
});
});
Try using jQuery's fadeOut/fadeIn effect.
Perhaps something like this:
function over(image) {
$("#main-nav").fadeOut(function () {
$(this).attr("src", image).fadeIn();
});
}
function off() {
$("#main-nav").fadeOut(function () {
$(this).attr("src", nav_off).fadeIn();
});
}
CSS transitions are an alternative way of handling this. There's a good tutorial (and demo) here.
you can see the effects API .using fadeIn() fadeOut() functions
http://api.jquery.com/category/effects/
Related
I have a problem to combine to functions in one onclick button. This is how my product have to look like: I want to put a hammer down when I click on an invisible button, when the hammer reaches an icon, the icon has te become another picture.
This is the code I have, but it's in javascript and jquery:
$('.box hammer').on('click', function() {
$(this).toggleClass('clicked');
});
function changeImage1() {
var image = document.getElementById('safari');
if (image.src.match("bulbon")) {
image.src = "safari.png";
} else {
image.src = "safariflat.png";
}
}
You can bind multiple on handlers to the same element and event, that's not a problem.
Delaying one of those handlers can be done in many ways, how is up to you. Libraries like Underscore and lodash offer a number of delay types, such as debounce.
You should be able to use something like:
function immediateHandler() {
alert("Immediate handler!");
}
function lateHandlerImpl() {
alert("Late handler!");
}
var lateHandler = _.delay(lateHandlerImpl, 2500);
$('div.button').on('click', immediateHandler);
$('div.button').on('click', lateHandler);
<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.7.0/underscore-min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="button">Click Me!</div>
Replace the alerts with your logic (creating/switching the images) and change the timing to sync the image changes up, and you should be able to create a fairly convincing animation.
You could use setTimeout for this:
$('.box hammer').on('click', function() {
$(this).toggleClass('clicked');
setTimeout(function() {
changeImage1();
// change time below to the time your animation takes
}, 5000);
});
function changeImage1() {
var image = document.getElementById('safari');
if (image.src.match("bulbon")) {
image.src = "safari.png";
} else {
image.src = "safariflat.png";
}
}
The problem is that when i use the toggle function without any options i.e default options the 'is(':visible')' on the item returns me the correct state.
However when i use toggle("slow"), it reveals incorrect state and always shows the item operated upon by the toggle as visible false. Of course i am checking that inside the callback function so as to be sure that the animation is complete.
please look at the below code
jQuery(document).ready(function () {
var h3 = jQuery("#myAccordion").find('h3');
jQuery("#myAccordion").find('h3').find('span').addClass("ui-state-active ui-icon");
jQuery.each(h3, function () {
jQuery(this).bind('click', function () {
jQuery(this).next('div').toggle("slow", "swing", callback);
});
});
});
function callback () {
if (jQuery(this).next('div').is(':visible')) {
alert('visible--' + jQuery(this).next('div').is(':visible'));
jQuery(this).find('span').removeClass("ui-state-default ui-icon").addClass("ui-state-active ui-icon");
}
else {
alert('visible--' + jQuery(this).next('div').is(':visible')); // always goes into this 'else' even though the item is visible.
jQuery(this).find('span').removeClass("ui-state-active ui-icon").addClass("ui-state-default ui-icon");
}
}
However the same works perfectly fine when not using the "slow" option with toggle.
Update 2:
Check this out here http://jsfiddle.net/tariquasar/7xt7D/2/
Any pointers...
Update 1: This is the fiddle http://jsfiddle.net/tariquasar/7xt7D/
The context this is not extended to the callback function too. You could try doing this. I have updated the jsfiddle (click here). Ill paste the same here.
jQuery(document).ready(function () {
var h3 = jQuery("#myAccordion").find('h3');
jQuery("#myAccordion").find('h3').find('span').addClass("ui-state-active ui-icon"); // first the item is visible
jQuery.each(h3, function () {
jQuery(this).bind('click', function () {
console.log(this);
jQuery(this).next('div').toggle("slow","swing",callback(this));
});
});
});
function callback (that) {
setTimeout( function () {
console.log(jQuery(that).next('div').is(':visible'));
if (jQuery(that).next('div').is(':visible')) {
alert('visible--' + jQuery(that).next('div').is(':visible'));
jQuery(that).find('span').removeClass("ui-state-default ui-icon").addClass("ui-state-active ui-icon");
}
else {
alert('visible--' + jQuery(that).next('div').is(':visible'));
jQuery(that).find('span').removeClass("ui-state-active ui-icon").addClass("ui-state-default ui-icon");
}
}, 1000);
}
I have added a SetTimeout to get the result you wanted. The callback function is called after the animation completes. Yes. But not after the CSS changes to display:none. CSS change happens a few millisecs later.
However the same works perfectly fine when not using the "slow" option with toggle.
I'm not really sure about how you got it working with options other than slow
I am trying to make my jquery codes look better here. My functions are working correctly but I was wondering if anyone can make my codes less ugly. Thanks a lot!
HTML
<div class='image_layout'>
<a href='#'><img src=' a.jpg '/></a>
<br><p class='credits'>hahahah
<br>Agency: Agency1
<br>Picture ID: 5 </p>
</div>
jQuery
$('#image_layout').on('hover', 'img', function() {
$(this).parent().next().next().fadeIn('fast');
})
$('#image_layout').on('mouseout', 'img', function() {
$(this).parent().next().next().fadeOut('fast');
})
You can pass two functions to jQuery hover - one for mousein, one for mouseout. You can make this change as long as you don't have dynamically added images. Your code would also be a lot simpler if the element you are fading has an ID or class:
$('#image_layout img').hover(
function () {
$(this).closest('.someClass').fadeIn('fast');
},
function () {
$(this).closest('.someClass').fadeOut('fast');
}
);
$('.image_layout').on('hover', 'img', function (e) {
if(e.type == 'mouseover') {
$(this).closest('.image_layout').find('.credits').stop().fadeIn('fast');
} else {
$(this).closest('.image_layout').find('.credits').stop().fadeOut('fast');
}
})
You could also have done:
$('.image_layout').on('hover', 'img', function() {
$(this).closest('.image_layout').find('.credits').stop().fadeIn('fast');
}, function() {
$(this).closest('.image_layout').find('.credits').stop().fadeOut('fast');
});
If you're sure that nothing other than hovering the image will cause the element to fade, you could simply write:
$('.image_layout').on('hover', 'img', function() {
$(this).closest('.image_layout').find('.credits').stop().fadeToggle('fast');
});
Look into Douglas Crockford's JS Style Guide. He'd make your code look something like (with improvements):
var obj = $('#image_layout img');
obj.mouseover( function(){
$(this).parent([selector]).next([selector]).fadeIn('fast');
});
obj.mouseout( function(){
$(this).parent([selector]).next([selector]).fadeOut('fast');
});
You don't need the on, just call the function directly.
I would use .eq as opposed to two next statements, additionally, hover takes two functions, the first being for the mouseenter event, and the second for mouseout
$('#image_layout').hover('hover', 'img', function () {
$(this).parent().eq(2).fadeIn('fast');
}, function () {
$(this).parent().eq(2).fadeOut('fast');
})
References
Take a look at eq here
Read over hover here
I'm trying to fade out a div on a click but also change some css values.
the issue im having is that the values change while the fade out is happening (too early). I need the values to change once the fade out has finished:
<script type="text/javascript">
$('#r_text').click(function() {
$(".box1_d").fadeOut();
$(".box1_c").css("top","0px");
});
</script>
Now when i run that, everything works but just not exactly how i'd like it.. I need the css values to be changed once the fadeout has finished, not while it's still happening.
is this possible?
if so, any ideas how?
thank you.
Use a callback function to modify the .css() as the second parameter to fadeOut(). It will fire when the fade completes.
<script type="text/javascript">
var fadeTime = 500;
$('#r_text').click(function() {
$(".box1_d").fadeOut(fadeTime, function() {
$(".box1_c").css("top","0px");
});
});
</script>
Provided you use jQuery version >= 1.5, you can/should utilize the Deferred object instead of using the callback parameter:
$('#r_text').click((function () {
var animations = {
initial: function () {
return $(".box1_d").fadeOut(1500);
},
following: function () {
return $(".box1_c").css("top","0px").animate({fontSize: '150%'});
},
onDone: function () {
alert('DONE!');
}
};
return function(e) {
$.when(animations.initial())
.pipe(animations.following)
.done(animations.onDone);
e.preventDefault();
};
}()));
JsFiddle of it in action: http://jsfiddle.net/wGcgS/2/
Hello Guys!
I have been trying to create a simple sample code for my newest jQuery Plugin, but it doesn't seems to be working at all! Can anyone tell where I'm going wrong?, or can anyone provide me a new function to do it. So my problem is that when I mouse over an element classed trigger an another element classed eg should fadeIn(); but if the user takes out the mouse before the element classed eg fades in it should not be fading in anymore, but this is not working at all. I don't not what is getting wrong? Please help me out. (Below is my Problem HTML nad Jquery Code!)
HTML CODE
<div class="trigger">MouseOverMe</div>
<div class="eg">See Me!</div>
JQUERY CODE
function timereset(a)
{
var elem = $('.'+a);
if(elem.data('delay')) { clearTimeout(elem.data('delay')); }
}
$(document).ready(function () {
$('div.eg').hide();
$('div.trigger').mouseover(function () {
$('div.eg').delay(1000).fadeIn();
});
$('div.trigger').mouseout(function () {
timereset('eg');
$('div.eg').fadeOut();
});
});
THANKS IN ADVANCE
You don't need that timereset stuff, simply call stop() on the object and the previous effect will stop:
http://api.jquery.com/stop/
Update based on the new comment:
$('div.trigger').mouseout(function () {
$('div.eg').stop().hide();
});
jQuery
$('.trigger').hover(function() {
$('.eg').delay(1000).fadeIn();
}, function() {
$('.eg').stop(true, true).hide();
});
Fiddle: http://jsfiddle.net/UJBjg/1
Another option would be to clear the queued functions like:
$('div.trigger').mouseout(function () {
$('div.eg').queue('fx', []);
$('div.eg').fadeOut();
});
Bear in mind if the fadeOut/In has already started by using stop you could end up with a semi-transparent element.
EDIT
Here's an example: http://jsfiddle.net/Qchqc/
var timer = -1;
$(document).ready(function () {
$('div.eg').hide();
$('div.trigger').mouseover(function () {
timer = window.setTimeout("$('div.eg').fadeIn(function() { timer = -1; });",1000);
});
$('div.trigger').mouseout(function () {
if(timer != -1)
window.clearTimeout(timer);
$('div.eg').fadeOut();
});
});