Develop Reference

How to make my animated skills bar responsive

I have an animated skills bar on my website, which fires when the section scrolls into view. Everything is working well so far.
Except when the viewport changes/window resizes the animated bars won't adjust to it and will be too long or to short.
I tried to solve this problem with
$(window).resize(function(){location.reload();
but on mobile viewport it keeps refreshing the page even though I'm just scrolling.
I already searched the net to see if there is a way to just reload the specific jquery function, but couldn't find anything. Or to be honest I didn't quite understood I guess, and couldn't get it working.
Here is what I found: https://css-tricks.com/forums/topic/reload-jquery-functions-on-ipad-orientation-change/
I read there is a way to make the website reload the whole js file. But since I still have other animations on my page, I don't know if this is the best way to do it.
I'm glad if anyone could help me with this. I'm very new to coding and my js/jquery knowledge is still very limited/non-existent.
here is my script for the bar animation
var $meters = $(".meter > span");
var $section = $('#skills .meter');
var $queue = $({});
function loadDaBars() {
$meters.each(function() {
var $el = $(this);
var origWidth = $el.width();
$el.width(0);
$queue.queue(function(next) {
$el.animate({width: origWidth}, 800, next);
});
});
}
$(document).bind('scroll', function(ev) {
var scrollOffset = $(document).scrollTop();
var containerOffset = $section.offset().top - window.innerHeight;
if (scrollOffset > containerOffset) {
loadDaBars();
$(document).unbind('scroll');
}
});
the width for the skillbar is defined via div class and span in %.
Maybe there is a css solution to this?
edit: this is how my html and css code looks like
.meter {
background-color: hsla(54, 73%, 95%, 1);
vertical-align: bottom;
width: 100%;
position: relative;
}
.meter>span {
display: block;
background-color: rgb(241, 233, 166);
position: relative;
overflow: hidden;
}
<div class="col-lg-6 col-md-6 col-sm-6">
<div class="meter">
<span style="width: 50%"></span>
</div>

You remove the style property of the bar once the animation has finished. This way the css rule will apply again:
$el.animate({width: origWidth}, {duration: 800, complete: function (){$el.removeAttr('style')}}, next);
(Assuming the width defined by the css is responsive)

jQuery text animation slide-in

I am trying to use jQuery slide-in animation and it seems to work fine, but my the second animation doesn't work. Can anyone tell me what I am doing wrong?
This line:
$('#headline1Txt').animate({'marginLeft': "100px"}, 1000);
is working fine, but this one:
$("#headline1Txt").animate({left: "+=30"}, 500);
is not working.
My Code
HTML
<div id="mainContainer">
<div id="headlineText">
<p id="headline1Txt" >Striped Bag</p>
</div>
</div>
JS
$(document).ready(function () {
$('#headline1Txt').animate({'marginLeft': "100px"}, 1000);
$("#headline1Txt").animate({left: "+=30"}, 500);
});
CSS
#headlineText {
margin: 60px 80px;
}

The left CSS property specifies part of the position of positioned
elements.
For absolutely positioned elements (those with position: absolute or position: fixed), it specifies the distance between the left margin
edge of the element and the left edge of its containing block.
https://developer.mozilla.org/en-US/docs/Web/CSS/left
As the CSS left property is part of position:*; property's, fix by adding the position property, so jquery knows what to increment a left value to.
In Action
CSS
#headlineText
{
margin:60px 80px;
}
#headline1Txt
{
position:relative;
}
HTML
<div id="mainContainer">
<div id="headlineText">
<p id="headline1Txt">Striped Bag</p>
</div>
</div>
jQuery
$(document).ready(function () {
$('#headline1Txt').
animate({ 'marginLeft': "100px" }, 1000).
animate({ left:"+=30" }, 5000);
});

What are you trying to achieve?
You want the text to slide in (heading right across the screen) then slide another 30px?
Thats what $("#headline1Txt").animate({ 'marginLeft': "+=30" }, 500); will achieve.
'marginLeft' not just left.

The left property of css only works with elements with absolute position. To make your animation work you have to put you element at absolute position.

Click button and Side Menu slide out from hidden

I want to make a similar navigation menu like what m.facebook.com did.
but this, i want to make it nicely animated slide out from left side of the website.
Flow ::
Click a button > (Menu is hidden by default) Menu Slide out, push the main container to right a bit to fit the menu > Click again > Menu Slide in and hidden again.
I got no idea to make it with javascript or jquery or ajax while i'm new to web development and there are too much of effect scripting language. May i know to achieve this, which is perfect in smoothness ?

Something along these lines... http://jsfiddle.net/HfdXY/
HTML:
<div id="menu">Menu</div>
<button id="openMenu">Toggle menu</button>​
CSS:
#menu {
height: 300px;
width: 0px;
border: 1px solid black;
display: none;
}​
JS:
$("#openMenu").click(function() {
var menu = $("#menu");
if ($(menu).is(":visible")) {
$(menu).animate({width: 0}, 1000, function() {$(menu).hide();});
} else {
$(menu).show().animate({width: 100}, 1000);
}
});​

trying to make navigation bar for tablet site

I'm designing a navigation bar for a tablet website. The navigation bar holds elements displayed horizontally, and I want to be able to display new elements with a swipe (kind of like a cover flow) without the window moving. This is the code I'm using now (jQuery Mobile):
//Tablet Features
$('#navHolder').bind('swipe',
function(e) {
$('#navHolder').animate({left:thisLeft - 100});
}
);
I dont think I can trigger a swipe without first disabling scroll, but I'm open to all suggestions. Please help.

Set the parent container of the element you are scrolling to overflow : hidden so no scroll-bars appear. Then swipe events should work fine since you won't be able to use native scrolling to scroll the content.
HTML --
<div id="navHolder-container">
<div id="navHolder">
<p>content in here</p>
</div>
</div>
CSS --
#navHolder {
position : absolute;
width : 1000px;
}
#navHolder-container {
position : relative;
overflow : hidden;
height : 100px;
width : 100%;
}
JS --
$(function () {
var convert = {
swipeleft : '-=100',
swiperight : '+=100'
};
$('#navHolder-container').bind('swipeleft swiperight', function(e) {
$('#navHolder').animate({ left: convert[e.type]});
});
});
Here is a demo: http://jsfiddle.net/B8PQn/1/

content of fixed div changes as other divs scroll past it

I'm trying to fix a div at the top of a layout that will contain a blog post's information (date posted, # of notes, permalink, etc.) and change this information as you scroll down past posts. I'm not sure if it would require any kind of javascript or just some intricate positioning using css. Here's how I would layout the posts. How can I get the specific post information from each post to change within that fixed div as the posts scroll past it?
#container {
width: 960px;
margin: 0px auto;
}
#changingpostinformation {
position: fixed;
margin: 0px auto;
}
<div id="container">
<div id="changingpostinformation">fixed post information div that's information changes as each post below reaches the top of #container</div>
<div class="post">
<h3>Post Title>
<p>This is the body of this example post.</p>
</div>
<div class="post">
<h3>Post Title>
<p>This is the body of this example post.</p>
</div>
</div>

Like #ShankarSangoli says, you should add top: 0;, and also left: 0; to #changingpostinformation (or other values to position it however you like)
You'll need some javascript to find out which post appears first on the page and show its info.
$(function() {
$(window).bind('load resize scroll', function() {
var doctop = $('body').scrollTop();
// loop over all posts, from top to bottom
$('.post').each(function() {
if ($(this).position().top > doctop) {
put_postinfo_in_fixed_div($(this));
return false; // breaks from the loop
}
});
});
});
This function runs once when page is loaded, and also when the window is resized or scrolled.
You need to implement put_postinfo_in_fixed_div() which gets an post div, and does what it says.

Use this CSS:
#changingpostinformation {
position: fixed;
top: 0px;
}