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I am using the mousenter demo from mootools. I put it on my site trying to affect the links so when someone hovers over them the link fades into another color. The problem I am having is that the mootools code is only set up to handle one ID! Since I am using it for a navigation, I have multiple IDs that I want to change. How can I affect all of them? I know I should use an array but I'm not that good with Javascript in order to code it properly. Please help!
The URL is www.portfoliobyart.com/h20
I took a look at your site. In demo.js, if you change this line
$('link').set('opacity', 0.5).addEvents({
to this:
$$('.nav a div').set('opacity', 0.5).addEvents({
you will achieve the same effect for every item in your nav menu.
You should read up on MooTools selectors for more about this. Selectors are a very powerful tool.
the code below will take each of the nav link elements and add the mouseenter and mouseout events.
//selects all nav elements
$$('.nav a div').each(function(el){
//this is the interior of the function that will run on each el
//store the original bg color
var color = el.getStyle('backgroundColor');
//now add the mouseenter and leave events w/ the morphs
el.set('opacity', 0.5).addEvents({
mouseenter: function(){
// This morphes the opacity and backgroundColor
this.morph({
'opacity': 1,
'background-color': '#000000'
});
},
mouseleave: function(){
// Morphes back to the original style
this.morph({
opacity: 0.5,
backgroundColor: color
});
}
});
});
hope this helps!
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If I click on the image, it is supposed to move me to another part of the scroll. Problem is, the image is included in a header (like a banner) which initiated as a class. How could i implement js code inside an image that belongs to that class? Or should i create a class inside a class?
First of all you don't need to use javascript at all
You can place your img inside a tag with href="#id-of-element". In in some other place in your html you can place element with id="id-of-element". In that case when you click on img it will scroll you to this element (it will not be a smooth scroll but more like 'teleportation').
If you insist on smooth scroll then you can do it like that. This will cover all anchors like a href="#..." but if you want it to only work on this very image you can replace a[href^="#"] with classname/id of your image.
This example for some reason doesn't work here for some reason but work locally, so you have to check this yourself https://developer.mozilla.org/en-US/docs/Web/API/Element/scrollIntoView
document.querySelector('a[href^="#"]').addEventListener('click', (e) => {
e.preventDefault();
const id = e.target.getAttribute('href');
document.querySelector(id).scrollIntoView({behavior: "smooth", block: "center", inline: "nearest"});
});
<a href="#id-of-element">
this is image
</a>
<div style="height: 1000px"></div>
<div id="id-of-element">content</div>
You can try using document.querySelector(selector)
selector example - .header .banner img
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In this website, the header is animated when you scroll the page a bit. Can you please advise what techniques, tools and best practices (broadly) one may use to achieve this and similar effects?
Use javascript to add a class to the header element when the scroll position is at the top (bind to the onscroll event and check if at the top or not).
Then define new postiions for your elements in css when that class is applied, and use the transition css property to animate it
Well for the animation occurring when you scroll you would use
$(document).scroll(function() {
if($(document).scrollTop() === 0);
} else {
});
As for the animation, there are many ways to do this and the question is too broad, as stated above.
the way I personally do it, is to add a class to the body on scroll. I then style the particular element I want to change (in your case the header) accordingly. I add it to the body instead of the particular element in case I want to manipulate other selectors, etc.
This is the JS I use:
jQuery(window).scroll(function() {
var scroll = jQuery(window).scrollTop();
if (scroll >= 50) { //distance scrolled before effect takes place
jQuery("body").addClass("scrolled");
} else {
jQuery("body").removeClass("scrolled");
}
});
Then I'd add some CSS for example:
header{height:100px;transition:all, .4s, ease; /*Make sure to use all cross-browser markup*/;}
body.scrolled header{height:50px;}
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I keep some elements inside one container. For better visibility odd elements have other background color. Sometimes I need to filter elements with conditions, so unwanted elements I move to another class, but it seems nth-child keep old state. Even if I make it dynamic with jQuery still it keeping old state.
I would prefer keep used and unused elements in same container - if I separate them and change filters, need to sort visible elements again.
jsfiddle: http://jsfiddle.net/ex4740n2/5/
Have you any ideas how to solve it?
Thanks in advance!
The answer by #Pete:
But I'm guessing your problem is that you think nth-child is a class selector - it's not, it's an element selector
So, if it not possible to make it by only css, make it using JS. Iterate visible elements and change background color.
var visibled = $(".item");
for (var i = 0; i < visibled.length; i += 2) {
$(visibled[i]).css("background-color", "rgba(190, 255, 196, 1)");
$(visibled[i + 1]).css("background-color", "");
}
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I mage a cog symbol that is supposed to have an onclick function that triggers a function. When I click it does not work. Could it matter that it has absolute positioning? How can I fix this?
I used this HTML:
<div id="cogdiv" onclick="theme()">
<h1 id="cog" class="themechange fa fa-cog" onclick="theme()"></h1>
</div>
and this JS:
var theme = function() {
document.getElementById('themes').style.animation = "themesappear 2s forwards";
document.getElementById('themes').style.WebkitAnimation = "themesappear 2s forwards";
};
The function works when I run it in the console.
Inspect Element here for more code.
Absolute positioning has no effect on how the onClick event is being fired.
You are simply positioning your element below another element, so another element is blocking the mouse event
Try adding to your CSS:
#cogdiv {
z-index: 9999; //or greater, or 1. Just make sure it's bigger than the overlapping element's z-index
}
Reading up on what z-index and CSS stack-order might also help.
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How to change the "start" of image?
I mean that the img is in the immobility only it's beginning is moving
I want change it CSS or HTML, in the last resort in JavaScript
Something like this: FIRST PICTURE (This picture on click change it's beginnig).
... It transform to it: SECOND PICTURE
Any idea? :/
<div class="myImg"> </div>
<style>
.myImg{
background: url('myimg.jpg');
}
.myImg2{
background: url('myotherimg.jpg');
}
</style>
<script type="javascript/text">
$('.myImg').click(function() {
$(this).removeClass('myImg');
$(this).addClass('myImg2');
});
</script>
Ofcourse you'll have to use jquery link to get jQuery latest update.
So what have i actually done here?
I've used jQuery to check if user click div .myImg if he did i just switch bettwen the div's classes and each other class got different image.
Hope i helped.
I'm not entirely sure what you're asking, but it sounds like you might want to do CSS sprites.
http://css-tricks.com/css-sprites/
If you want to change the image on click, you'll need some code. I won't spend too much time on that, given your question is hard to decipher, but if it were me, I would create a class per sprite, then toggle between the two classes based on the click event.