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Javascript window resize not firing onload

I'm working off a specific codepen which can be found here https://codepen.io/anon/pen/WXgvjR .. Its not mine.
Everything works perfect with it, except when i open the page on a mobile or change the browser width to be mobile size, its still displaying some items outside the browser window width ways, is there any way to detect a mobile or change in screen size and just display them going down?
The following is the resize code that is found in the codepen if that helps
$(window).resize(function(){
var margin=40;
var padding=15;
var columns=0;
var cWidth=300;
var windowWidth = $(window).width();
var overflow = false;
while(!overflow){
columns++;
var WidthTheory = ((cWidth*columns)+((columns+1)*padding)+margin);
if(WidthTheory > windowWidth)
overflow = true;
}
if(columns > 1)
columns--;
var GridWidth = ((cWidth*columns)+((columns+1)*padding)+margin);
if( GridWidth != $('#grid').width()){
$('#grid').width(GridWidth);
}
});
Any help would be greatly appreciated

Resizing using the Maximise, Minimise, or the Chrome DevTools Devices Buttons, etc. does not trigger the resize event properly (it triggers it before actually resizing, so it does not get the right size).
For the mobile page load, put the same code from the window resize function into the document ready function as well (I would recommend making it a function and then call the function in both to reduce duplicate code):
function setDisplayBoardSize()
{
var margin=40;
var padding=15;
var columns=0;
var cWidth=300;
var windowWidth = $(window).width();
var overflow = false;
while(!overflow){
columns++;
var WidthTheory = ((cWidth*columns)+((columns+1)*padding)+margin);
if(WidthTheory > windowWidth)
overflow = true;
}
if(columns > 1)
columns--;
var GridWidth = ((cWidth*columns)+((columns+1)*padding)+margin);
if( GridWidth != $('#grid').width()){
$('#grid').width(GridWidth);
}
}
$(window).resize(function()
{
setDisplayBoardSize();
});
$(document).ready(function()
{
setDisplayBoardSize();
});
For the min-max etc. see this stackoverflow thread:
jQuery resize() using browser maximise button
This answer specifically should help:
$(window).resize(function()
{
setTimeout(function() {
setDisplayBoardSize();
}, 100);
});

Change margin-top as user scrolls

I am trying to get a div to scroll up at the same amount of pixels as the user scrolls down the page. For example, in Google Chrome when using the mouse wheel, it scrolls down in about 20px intervals. But when you scroll down using the handle, the scrolling amount varies.
Here is my code so far:
var scrollCtr = 50;
$(window).scroll(function(){
scrollCtr = scrollCtr - 20;
$('div.nexus-files').css('margin-top', scrollCtr + 'px');
});
There are a few problems with this:
The user scrolling varies
It needs to subtract from margin-top if scrolling down and add to margin-top if scrolling up
Here is an example:
http://www.enflick.com/
Thanks for the help

You're doing it the wrong way, what you are trying to do should be done using position: fixed on div.nexus-files
div.nexus-files{position: fixed; top: 0;}
but anyway - if you still want to know what you can do with the scroll event - you better get to scrollTop of the document and set the margin-top to the same value
window.onscroll = function(event){
var doc = document.documentElement, body = document.body;
var top = (doc && doc.scrollTop || body && body.scrollTop || 0);
document.getElementById('nexus-files_id').style.marginTop = top+'px';
}
I'm using pure Javascript instead of jQuery because of the overhead that might be crucial when the browser need to calculate stuff in a very short amount of time (during the scrolling). [this can be done even more efficient by storing reference to the element and the doc... but you know..)
I used id based selector to get the specific element instead of class based
AND I SAY AGAIN - this is not how you should do what you were trying to do

Why not using the actual scroll offset as reference or position ?
// or whatever offset you need
var scrollOffset = document.body.scrollTop + 20;
// jQuery
var scrollOffset = $("body").scrollTop() + 20;

Finally Got it
Here is the code I used to accomplish the task.
Most of the code is from http://enflick.com and I modified it to work with my individual situation.
jQuery(window).load(function(){
initParallax();
});
// parallax init
function initParallax(){
var win = jQuery(window);
var wrapper = jQuery('#wrapper');
var bg1 = wrapper.find('.nexus-files');
var koeff = 0.55;
if (bg1.length) {
function refreshPosition(){
var scrolled = win.scrollTop();
var maxOffsetY1 = 450;
var offsetY1 = scrolled * koeff;
var offsetY2 = scrolled * koeff - (maxOffsetY1 * koeff - offsetY1);
if (offsetY1 <= maxOffsetY1 * koeff - offsetY1) {
bg1.css("margin-top", +-offsetY1+"px");
//alert(+-offsetY1+"px");
}
}
refreshPosition();
win.bind('resize scroll', refreshPosition);
}
}

Get browser width and height after user resizes the window

Is there any way to get the browser width and height after a user has resized the window. For example if the window is 1920 by 1080 and the user changes the window to 500 by 500 is there any way to get those two new values in JavaScript or jquery?

Pure Javascript answer:
var onresize = function() {
//your code here
//this is just an example
width = document.body.clientWidth;
height = document.body.clientHeight;
}
window.addEventListener("resize", onresize);
This works fine on chrome. However, it works only on chrome. A slightly more cross-browser example is using the event target properties "outerWidth" and "outerHeight", since in this case the event "target" is the window itself. The code would be like this
var onresize = function(e) {
//note i need to pass the event as an argument to the function
width = e.target.outerWidth;
height = e.target.outerHeight;
}
window.addEventListener("resize", onresize);
This works fine in firefox and chrome
Hope it helps :)
Edit: Tested in ie9 and this worked too :)

If you need to know these values to do layout adjustments, I bet you plan on listening to those values. I recommended using the Window.matchmedia() API for that purpose instead.
It is much more performant and is basically the JS equivalent of CSS media queries.
Very quick example of use:
if (window.matchMedia("(max-width: 500px)").matches) {
/* the viewport is less than or exactly 500 pixels wide */
} else {
/* the viewport is more than 500 pixels wide */
}
You can also setup a listener that'll get called every time the state of the matches property changes.
See MDN for description and example of using a listener.

It's possible by listening to resize event.
$(window).resize(function() {
var width = $(window).width();
var height = $(window).height();
})

You can use the JQuery resize() function. Also make sure you add the same resize logic to reload event. If user reloads in the sized window your logic won't work.
$(window).resize(function() {
$windowWidth = $(window).width();
$windowHeight = $(window).height();
});
$(document).ready(function() {
//same logic that you use in the resize...
});

Practically, I use this and it helps me a lot:
var TO = false;
var resizeEvent = 'onorientationchange' in window ? 'orientationchange' : 'resize';
$(window).bind(resizeEvent, function() {
TO && clearTimeout(TO);
TO = setTimeout(resizeBody, 200);
});
function resizeBody(){
var height = window.innerHeight || $(window).height();
var width = window.innerWidth || $(window).width();
alert(height);
alert(width);
}

You can use the resize event, along with the height() and width() properties
$(window).resize(function(){
var height = $(window).height();
var width = $(window).width();
});
See some more examples here

Use jQuery resize method to listen window size change . inside callback you can get height and width.
$(window).resize(function(){
var width = $(window).width();
var height = $(window).height();
});

Simplest way to get real width and height of an element after window resize as the follow:
<div id="myContainer">
<!--Some Tages ... -->
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script>
$(function () {
$(window).resize(function () {
//The below two lines of codes more Important to clear the previous settings to get the current measure of width and height
$('#myContainer').css('height', 'unset');
$('#myContainer').css('width', 'unset');
var element = $('#myContainer');
var height = element.height();
var width = element.width();
//Below two lines will includes padding but not border
var innerHeight = element.innerHeight();
var innerWidth = element.innerWidth();
//Below two lines will includes padding, border but no margin
var outerHeight = element.outerHeight();
var outerWidth = element.outerWidth();
//Below two lines will includes padding, border and margin
var outerHeight = element.outerHeight(true);
var outerWidth = element.outerWidth(true);
});
});
</script>

You can use the event object to get the height and width, I use destructuring assignment and the target points to window:
const handleGetDim = ({ target }) => ({
width: target.innerWidth,
height: target.innerHeight,
});
window.addEventListener('resize', handleGetDim);

jQuery auto-run when screen rotating

I'm kinda new to jQuery and JS and i'm trying to make a text-size adjustable to the screen width on a mobile site
I search the web for an answer and came up with this solution
(function($) {
$.fn.textfill = function(maxFontSize) {
maxFontSize = parseInt(maxFontSize, 10);
return this.each(function(){
var ourText = $("span", this),
parent = ourText.parent(),
maxHeight = parent.height(),
maxWidth = parent.width(),
fontSize = parseInt(ourText.css("fontSize"), 10),
multiplier = maxWidth/ourText.width(),
newSize = (fontSize*(multiplier-0.1)),
textHeight = ourText.height();
if(newSize > 35){
ourText.css("fontSize",35);
}
else{
ourText.css(
"fontSize",
(maxFontSize > 0 && newSize > maxFontSize) ?
maxFontSize :
newSize
);
}
});
};
})(jQuery);
$(document).ready(function() {
$('.jtextfill').textfill({ maxFontPixels: 36 });
});
but then it was only when the page first reloads and not on windows resizes, so I entered it all into a function and added
$(document).ready(function () {
resizeTextHeb();
$(window).resize(function() {
resizeTextHeb();
});
});
but now on the iPhone/iPad/Android etc. it doesnt reload the function when the screen rotates.
doesnt the screen rotation acts as a window resize? what can I do to make it work?
thanks.
thanks

You may use media queries for that, without using js.

your function name was "resizeTextHeb()" on the main question, any function name issues!?
i suggest u to use google chrome js console for error reports or the error console on the FF browser. , anyway, if it does alert u, so the main issue is with ur function, not the orientation method.

Javascript dialog is programmed to move when the page scrolls, but it flickers. Can this be fixed?

I've written some jQuery code to display a box with data in the corner of the users' web browser. I'm using the .scroll event to make the box stay in the corner as the user scrolls up and down the page. Let me emphasize that I am not using jquery-ui dialog.
The only problem is that the box flickers as the page scrolls. I'm afraid that there will be no cross-browser solution to this problem as the different browsers seem to behave differently with scrolling. Barring a cross-browser solution, an IE solution would be nice (My web application is designed to be used by a specific group of about 100 users in my organization.)
Here are snippets of the relative code:
ExternalScroll: function () {
LittleBlackBook.setPosition();
}
setPosition: function () {
var scrollPosition = $(self).scrollTop();
var cssTop = LittleBlackBookStatic.determineCssTop(this.height, this.isTop, this.vOffset, scrollPosition);
var cssHeight = LittleBlackBookStatic.determineCssHeight(this.height);
var cssLeft = LittleBlackBookStatic.determineCssLeft(this.width, this.isLeft, this.hOffset);
var cssWidth = LittleBlackBookStatic.determineCssWidth(this.width);
this.jQueryObj.css('top', cssTop);
this.jQueryObj.css('height', cssHeight);
this.jQueryObj.css('left', cssLeft);
this.jQueryObj.css('width', cssWidth);
}
var LittleBlackBookStatic = {
determineCssTop: function (height, isTop, vOffset, vScroll) {
var windowHeight = $(self).height();
var scrollPosition = $(self).scrollTop();
var newModalTop = isTop ? vOffset + vScroll : windowHeight - height + vScroll - vOffset;
return newModalTop + 'px';
},
determineCssHeight: function (height) {
return height + 'px';
},
determineCssLeft: function (width, isLeft, hOffset) {
var windowWidth = $(self).width();
var newModalLeft = isLeft ? hOffset : windowWidth - width - hOffset;
return newModalLeft + 'px';
},
determineCssWidth: function (width) {
return width + 'px';
}
} // end LittleBlackBookStatic
I'm using jQuery to look up the scroll position as the page scrolls and change the CSS.
Is there a better way; a way that will make it scroll without flickering? If no, then why not?

You should use fixed positioning for that box instead instead of animating it to keep it in the corner.
You'll use less javascript and avoid flickering that comes with animation.