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Removing javascript logo function with a css class

i have a page with a logo that changes his color by scrolling the page. I want to keep this function except for some page, so i want to remove this function.
How i could remove the effect if i insert a css class in the code?
var b = $(window).scrollTop();
if( b > 60 ){
$(".navbar").addClass("scroll-fixed-navbar");
$(".navbar-brand img").attr('src', 'img/dark-logo.png');
} else {
$(".navbar").removeClass("scroll-fixed-navbar");
$(".navbar-brand img").attr('src', 'img/white-logo.png');
}
});
$(document).ready(function() {
"use strict";
for esample i want to insert if class contain "black", so keep only the dark logo (the previous function will be disabled)

Wrap the current javascript with this:
if (!$(someElement).hasClass("black")) {
//do stuff here
}
This will prevent the class="black" from running that script, I cannot help any further since all your code is not posted but this will certainly point you in the right direction.

anchor to an iframe or html5 object

I am trying to scroll to an element within an HTML5 object like so:
HTML with angular:
SHOW ME
This is the object I am using to pull in an html file locally.
<object type="text/html" data="sample.html" id="site-frame">
Inside sample.html, I have a div at the bottom of the page:
div id="anchor5" class="anchor">Anchor 5 of 5</div>
function within controller:
$scope.gotoAnchor = function(x) {
var newHash = 'anchor' + x;
if ($location.hash() !== newHash) {
$location.hash('anchor' + x);
} else {
$anchorScroll();
}
};
if I place the anchor5 div outside of the object, it works, but not while inside the of the object. I am looking to go INTO the Object and scroll to the div. Any help would be awesome!

Figured it out. Here is the code I used:
var goToLink = function(link){
var element = document.getElementById('site-frame').contentWindow.document.getElementById(link)
element.scrollIntoView({block: "end", behavior: "smooth"});
}
I was able to use the previous comment of scrollIntoView() using the options and this other answer - How to pick element inside iframe using document.getElementById

How can I hide a button when scrolled to the top of a page?

I'm trying to adapt this JSFiddle to make the menu button on my website hide when I'm at the top of the page and show when I start scrolling down.
I modified the JS to match the CSS on my site. Then I placed it in tags in the head of my page
var $scb = $('<div class="toggle-menu-wrap"></div>');
$('.top-header').append($scb);
var $ccol = $('.content');
$ccol.scroll(function(){
$scb.stop(true,true).fadeTo(500, $ccol.scrollTop() > 10 ? 1 : 0);
});
However, it still doesn't work. Am I making a mistake in how I'm modifying the JS to fit my CSS?

You can include the toggle-menu-wrap element in your HTML from the start. There is no need to insert it using JS.
Write the one line of CSS you need, which is to hide the element from the beginning
.toggle-menu-wrap {
display: none;
}
Your version of jQuery uses 'jQuery' instead of '$' to reference itself. I would also re-write your JS like:
jQuery(document).ready(function() {
fadeMenuWrap();
jQuery(window).scroll(fadeMenuWrap);
});
function fadeMenuWrap() {
var scrollPos = window.pageYOffset || document.documentElement.scrollTop;
if (scrollPos > 300) {
jQuery('.toggle-menu-wrap').fadeIn(300);
} else {
jQuery('.toggle-menu-wrap').fadeOut(300);
}
}

Like #murli2308 said in the comments above, you need to attach a scroll event listener to the window:
$(document).ready(function () {
var $scb = $('<div class="scroll-border"></div>');
$('.above').append($scb);
var $ccol = $('.content');
$(window).scroll(function(){
$scb.stop(true,true).fadeTo(500, $ccol.scrollTop() > 10 ? 1 : 0);
});
})
Wrapping your code in $(document).ready() would also be a good idea.
The reason $ccol.scroll(function() { ... works in that fiddle is because of the CSS:
.content{
height: 200px;
width: 200px;
overflow: auto;
}
Notice overflow: auto;. This causes that specific div to be scrollable. However, on your website, you scroll the entire page, not $ccol. This means the event handler will never fire a scroll event (since $ccol will never scroll).

You might have forgotten to link Jquery.
<script type="text/javascript" src="http://code.jquery.com/jquery-1.8.3.min.js"></script>
Link this inside your head tag incase.....

This should do the job:
$(window).scroll(function(e){
if ($(this).scrollTop() > 0) {
$(".your_element").css("display", "block");
} else {
$(".your_element").css("display", "none");
}
});

jQuery animation not working in anchor tags or anchor tag children

I've spent the better part of a day tracking down a problem I've been having with jQuery animation. There appear to be issues with applying jQuery.animate() to anchor elements, or to child elements inside of anchor elements, at least with regard to movement animations. I've boiled the problem down to a fairly simple example which illustrates the problem:
<!DOCTYPE html>
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8/jquery.min.js"></script>
<script>
var foo = {};
function TestMove(newx, newy) {
this.newx = newx;
this.newy = newy;
}
TestMove.prototype = {
movex:function () {
$("#newsec").animate({left: this.newx + "px"});
},
movey:function () {
$("#newsec").animate({top: this.newy + "px"});
}
}
function bar() {
foo[1].movex();
foo[1].movey();
}
function init() {
foo[1] = new TestMove(200,200);
}
</script>
</head>
<body onload="init()">
<a href="" style="position: relative;">
<div style="position: relative; height: 50px; width: 50px; background-color: red;" id="newsec" onclick="bar()"></div>
</a>
</body>
</html>
The animation doesn't work, regardless of whether I put the id attribute and onclick event handler call in the <a> tag or in the <div> within it. If, on the other hand,I remove the <a> element tags altogether, the animation works as expected on the <div> element.
Does anyone have any idea why this happens?
The issue is almost moot, since I can easily do with <div> elements in the working page what I could also do with <a> elements. In the working code (much more complex) I'm using event.preventDefault() on the anchor elements so that linking and other actions are driven by explicit event handlers and this can be done from a <div> just as well. I believe I can even change the pointer icon when one does a mouseover on the <div> so that it mimics a true anchor in this regard as well.

It's because the browser is going to the anchor prior to the animation being put in place. There are plugins to get around these sort of issues, or you can put together your own.
http://briangonzalez.org/arbitrary-anchor
Example of a simple implementation:
jQuery.fn.anchorAnimate = function(settings) {
settings = jQuery.extend({
speed : 1100
}, settings);
return this.each(function(){
var caller = this
$(caller).click(function (event) {
event.preventDefault()
var locationHref = window.location.href
var elementClick = $(caller).attr("href")
var destination = $(elementClick).offset().top;
$("html:not(:animated),body:not(:animated)").animate({ scrollTop: destination}, settings.speed, function() {
window.location.hash = elementClick
});
return false;
})
})
}

javascript: scroll a div to the bottom

I have code like
function scrollme(){
dh=document.body.scrollHeight
ch=document.body.clientHeight
if(dh>ch){
moveme=dh-ch
window.scrollTo(0,moveme)
}
}
But I want it to only scroll a div named "feed" not the whole page. How can I do this?

document.getElementById('feed').scrollTop = y;
https://developer.mozilla.org/en/DOM/element.scrollTop