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Is counter predefined in JS?

I did some research and I couldn't understand what is 'Counter' ? is it predefined in js/jquery ? or is it a css property ?
$('.count').each(function () {
$(this).prop('Counter',0).animate({
Counter: $(this).text()
}, {
duration: 4000,
easing: 'swing',
step: function (now) {
$(this).text(Math.ceil(now));
}
});
});

JS Function counter doesn't output the correct numbers

Two digits are missing at the end, why? Javascript output is in white and the desired numbers are in black above.
Js Code:
$('.count').each(function () {
$(this).prop('Counter', 0).animate({
Counter: $(this).text()
}, {
duration: 1000,
easing: 'swing',
step: function (now) {
$(this).text(now);
}
});
});

You need to maintain trailing zeros choosing how much digit will be shown (with toFixed(n)). Three decimal in example below:
$(document).ready(function(){
$('.count').each(function () {
if($(this).text() % 1 != 0){
$(this).prop('Counter', 0).animate({
Counter: $(this).text()
}, {
duration: 1000,
easing: 'swing',
step: function (now) {
$(this).text(now.toFixed(3));
}
});
}else{
$(this).prop('Counter', 0).animate({
Counter: $(this).text()
}, {
duration: 1000,
easing: 'swing',
step: function (now) {
$(this).text(now.toFixed(0));
}
});
}
});
});
https://jsfiddle.net/o2gxgz9r/9319/

Solved it using
$(this).text(valueOf(now));
instead of:
$(this).text(now);

jQuery animations step by step

I have a small problem on my jQuery animation.
I want a button which change the width of a div from 100% to 72.5%. Next to this div could be another div which could fill the rest space (width 22.5%, 5% margin)
It could do following things step by step:
Div 1 get a border
div 1 change his width
div 2 get opacity and change his width
Here is my code:
var hidden = true;
function openEditMenu(){
var em = document.getElementById("editMenu");
var rf = document.getElementById("reportField");
if(hidden){
$({alpha:0}).animate({alpha:1}, {
duration: 1500,
step: function(){
rf.style.border ="1px solid rgba(0,0,0,"+this.alpha+")";
}
});
$("#editMenu").css({opacity: 0.0, visibility: "visible"}).animate({opacity: 1.0},1000);
$(em).animate({width: "22.5%"},{ duration: 1000, queue: false });
$(rf).animate({width: "72.5%"},{ duration: 1000, queue: false });
$(rf).animate({marginRight: "5%"},{ duration: 1000, queue: false });
}
else{
$({alpha:1}).animate({alpha:0}, {
duration: 1000,
step: function(){
rf.style.border ="1px solid rgba(0,0,0,"+this.alpha+")";
}
});
$(em).animate({width: "0%"},{ duration: 1000, queue: false });
$(rf).animate({width: "100%"},{ duration: 1000 });
$(rf).animate({marginRight: "0%"},{ duration: 1000, queue: false });
$("#editMenu").css({opacity: 1.0, visibility: "visible"}).animate({opacity: 0.0},1000);
}
hidden = !hidden;
}
Like you can see in the example now everything happens on the same time. But I want that everything works step by step.
var hidden = true;
function openEditMenu() {
var em = document.getElementById("editMenu");
var rf = document.getElementById("reportField");
if (hidden) {
$({
alpha: 0
}).animate({
alpha: 1
}, {
duration: 1500,
step: function() {
rf.style.border = "1px solid rgba(0,0,0," + this.alpha + ")";
}
});
$("#editMenu").css({
opacity: 0.0,
visibility: "visible"
}).animate({
opacity: 1.0
}, 1000);
$(em).animate({
width: "22.5%"
}, {
duration: 1000,
queue: false
});
$(rf).animate({
width: "72.5%"
}, {
duration: 1000,
queue: false
});
$(rf).animate({
marginRight: "5%"
}, {
duration: 1000,
queue: false
});
} else {
$({
alpha: 1
}).animate({
alpha: 0
}, {
duration: 1000,
step: function() {
rf.style.border = "1px solid rgba(0,0,0," + this.alpha + ")";
}
});
$(em).animate({
width: "0%"
}, {
duration: 1000,
queue: false
});
$(rf).animate({
width: "100%"
}, {
duration: 1000
});
$(rf).animate({
marginRight: "0%"
}, {
duration: 1000,
queue: false
});
$("#editMenu").css({
opacity: 1.0,
visibility: "visible"
}).animate({
opacity: 0.0
}, 1000);
}
hidden = !hidden;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div style="display:inline-flex;width:100%;">
<div id="reportField" style="width:100%; height:50px; background-color:blue;">
a
</div>
<div id="editMenu" style="width:0%; height:50px; background-color:red; visibility: hidden;">
b
</div>
</div>
<button onclick="openEditMenu()">
</button>
I know this solution:
$('#id').animate(
{ left: new value },
duration, function() {
// Animation complete.
});
But it doesnt works on my alpha animation.

Connect jquery-script with waypoints JS

I've included the waypoints.js script on my site. Now I would like to connect this script with some jquery. The script should "start" if the content is in the viewport.
On a different site I used
$('.fly-in-animation').waypoint(function() {
$(this.element).addClass('animated fadeInUp');
}, { offset: '100%' });
But I've no idea how to connect the waypoints script with these jquery:
$({countNum: $('#counter-laender').text()}).animate({countNum: 14}, {
duration: 2000,
easing:'linear',
step: function() {
$('#counter-laender').text(Math.floor(this.countNum));
},
complete: function() {
$('#counter-laender').text(this.countNum);
}
});

Using the sample code from Waypoints site combined with what you provided (assuming you want this to happen when #counter-laender enters the viewport):
$(document).ready(function() {
$('#counter-laender').waypoint(function() {
myFunction();
});
});
function myFunction() {
$({
countNum: $('#counter-laender').text()
}).animate({
countNum: 14
}, {
duration: 2000,
easing: 'linear',
step: function () {
$('#counter-laender').text(Math.floor(this.countNum));
},
complete: function () {
$('#counter-laender').text(this.countNum);
}
});
}

jQuery Knob hover animation

I want to animate the Knob circle that it fills up on hovering. I'm new to Knob so i have no idea where my error is or if i even have the right direction. Right now it does not even show a circle :(
Basically i just want to have a circle around an icon that fills up on hovering. Maybe i can achieve that easier?
This is the sollution of it plus a little fix that i will start and stop at the right values, so you can interupt the animation without breaking it
the HTML:
<input type="text" value="0" id="circle" />
the Javascript:
$(function() {
$('.circle').knob({
min: '0',
max: '100',
readOnly: true,
displayInput: false
});
$('.circle').parent().hover( function() {console.log("hover");
$({ value: $('.circle').val() }).animate(
{ value: 100 },
{ duration: 300,
easing: 'swing',
progress: function() {
$('.circle').val(Math.round(this.value)).trigger('change');
}
});
}, function() {
$({ value: $('.circle').val() }).animate(
{ value: 0 },
{
duration: 300,
easing: 'swing',
progress: function() {
$('.circle').val(Math.round(this.value)).trigger('change');
}
});
});
});
Here is the JSFiddle

you need to change the hover handler to the parent of #circle or change displayInput to true
$(function() {
$('#circle').knob({
min: '0',
max: '100',
readOnly: true,
displayInput: false
});
//$('#circle').parent() is the new div that contains the input and the canvas
$('#circle').parent().hover( function() {
$({ value: 0 }).animate(
{ value: 100 },
{ duration: 1000,
easing: 'swing',
progress: function() {
$('#circle').val(Math.round(this.value)).trigger('change');
}
});
}, function() {
$({ value: 100 }).animate(
{ value: 0 },
{
duration: 1000,
easing: 'swing',
progress: function() {
$('#circle').val(Math.round(this.value)).trigger('change');
}
});
});
});//you need to close with ');'
you need to include the knob.js in the fiddle or else you get a '404 Not Found' error and include jquery or else you get this error 'Uncaught ReferenceError: $ is not defined'
http://jsfiddle.net/dWsuP/1/