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unwanted behaviour after javascript mousedown event

I have made a fiddle here and I am using Chrome.
I want to drag the red dashed/dotted line on the left to the right. A new flex column is added on mouseup OR when you exceed a part of the container, depending on the number of columns already added. For now I just try to add max 5 columns.
The first "drag" works as expected
mouse down
while holding mousedown drag to right
column is added on mouseup or when exceeding some width
Now I want to repeat these steps and add another one. But now the behaviour is different:
mouse down
drag it to the right but it gets stuck
I have to release the mouse button and move to the right and get out of the function
Here is some code, I've tried some stuff with bubble true or false on the eventlisteners but no luck. Should I use other events?
var container = document.querySelector('.js-flex-container'),
containerRow = container.querySelector('.js-flex-row'),
oldX = 0,
oldY = 0,
rect = container.getBoundingClientRect(),
mouseupEvent = new MouseEvent('mouseup'),
newDiv,
colCount,
captureMouseMove = function captureMouseMove(event){
var directionX = 0,
directionY = 0;
if ((event.clientX - rect.left) > oldX) {
// "right"
newDiv.style.width = oldX + 'px';
if (oldX >= Math.round(rect.right / colCount)) {
container.dispatchEvent(mouseupEvent);
}
}
oldX = (event.clientX - rect.left);
};
container.querySelector('.js-flex-column').addEventListener('mousedown', function(event){
var colWidth = event.clientX - rect.left,
columns = container.querySelectorAll('.col');
colCount = columns.length + 1;
newDiv = document.createElement('div');
newDiv.className = 'col-x';
columns[0].parentNode.insertBefore(newDiv, columns[0]);
container.addEventListener('mousemove', captureMouseMove);
});
container.addEventListener('mouseup', function(){
console.log('mouseup');
if (typeof newDiv !== 'undefined') {
newDiv.style.width = '';
newDiv.className = 'col col-' + colCount;
container.removeEventListener('mousemove', captureMouseMove);
}
});

Chrome is doing something (funky) with the event after move.
Adding event.preventDefault() should do the trick
captureMouseMove = function captureMouseMove(event){
var directionX = 0,
directionY = 0;
if ((event.clientX - rect.left) > oldX) {
// "right"
newDiv.style.width = oldX + 'px';
if (oldX >= Math.round(rect.right / colCount)) {
container.dispatchEvent(mouseupEvent);
}
}
oldX = (event.clientX - rect.left);
event.preventDefault(); // <---
};
I would also recommend that you don't use container for mouseup events. Instead use window so releasing outside of the container doesn't cause issues. You could do the same for mousemove.

Get correct click position on scaled image

This is how I get the click position when clicking on an image to do some image transformation. But my problem is, that the image has the CSS attribute max-width: 1000px. So the code works only for images which are smaller. For larger images the position result is not the real pixel which was clicked on.
My question is, if it is possible to calculate the correct click position for the natural sized image. An alternative would be to set some data attributes with the real image size like data-width: '1200px' and data-height: '1000px'. But still I have to do some calculation.
parentPosition = getPosition(event.currentTarget),
x = event.clientX - parentPosition.x,
y = event.clientY - parentPosition.y;
function getPosition(element) {
var xPosition = 0;
var yPosition = 0;
while (element) {
xPosition += (element.offsetLeft - element.scrollLeft + element.clientLeft);
yPosition += (element.offsetTop - element.scrollTop + element.clientTop);
element = element.offsetParent;
}
return { x: xPosition, y: yPosition };
}

If you know natural size and current size, i think you can just do this:
naturalClickPosX = (naturalWidth / currentWidth) * currentClickPosX;
naturalClickPosY = (naturalHeight / currentHeight) * currentClickPosY;
Have a look at this JSFiddle
HTML
<img src="http://placehold.it/1200x1000" width="1000">
JavaScript
$('img').on("click", function(e){
var $img = $(this);
var currentClickPosX = e.pageX - $img.offset().left;
var currentClickPosY = e.pageY - $img.offset().top;
var currentWidth = $img.width();
var currentHeight = $img.height();
var naturalWidth = this.naturalWidth;
var naturalHeight = this.naturalHeight;
var naturalClickPosX = ((naturalWidth / currentWidth) * currentClickPosX).toFixed(0);
var naturalClickPosY = ((naturalHeight / currentHeight) * currentClickPosY).toFixed(0);
alert("Current X: " + currentClickPosX + " Current Y: " + currentClickPosY +
"\r\nNatural X: " + naturalClickPosX + " Natural Y: " + naturalClickPosY);
});

try this , will work on all sizes
$('.img-coordinate').click(function(e){
var parentOffset = $(e.target).parent().offset();
// here the X and Y on Click
X = e.pageX - $(e.target).offset().left;
Y = e.pageY - $(e.target).offset().top;
alert(X + ' , ' + Y );
});
working fiddel : https://jsfiddle.net/h09kfsoo/

creating virtual mousepad in jquery with click and hover events

Hi Friends i am very very new to javascript and and J Query . now i want to create virtual mouse pad . i am created two div's one for mouse pad and second one is container in container i am taken another div for act as a cursor(class name is follower) .
in mouse pad div when ever mouse move follower div moving relative to the mouse position. now i want to generate click event using virtual cursor means click the buttons using follower.
Button1
Button2
MousePad
this is my js code
var mouseX = 0, mouseY = 0, limitX = 150-15, limitY = 150-15;
$('.container1').mousemove(function(e){
var offset = $('.container1').offset();
mouseX = Math.min(e.pageX - offset.left, limitX);
mouseY = Math.min(e.pageY - offset.top, limitY);
mouseX=mouseX*3;
mouseY=mouseY*3;
if (mouseX < 0) mouseX = 0;
if (mouseY < 0) mouseY = 0;
});
// cache the selector
var follower = $("#follower");
var xp = 0, yp = 0;
var loop = setInterval(function(){
// change 12 to alter damping higher is slower
xp += (mouseX - xp);
yp += (mouseY - yp) ;
follower.css({left:xp, top:yp});
}, 30);
$('.buttons span').bind('click',function(){
alert($(this).attr('title'));
});
JSbin Link
http://jsbin.com/AGAquhej/2/edit for code
http://jsbin.com/AGAquhej/1 Demo
i want generate click event using follower(moving in mouse pad)
can any one solve the problem how to generate fake click events
Thanks in advance

Using the some collision detection code from this SO answer https://stackoverflow.com/a/12180865/1481489 the following may work (untested, description is in the comments):
var overlaps = (function () { // this is the collision detection code
function getPositions( elem ) {
var pos, width, height;
pos = $( elem ).position();
width = $( elem ).width();
height = $( elem ).height();
return [ [ pos.left, pos.left + width ], [ pos.top, pos.top + height ] ];
}
function comparePositions( p1, p2 ) {
var r1, r2;
r1 = p1[0] < p2[0] ? p1 : p2;
r2 = p1[0] < p2[0] ? p2 : p1;
return r1[1] > r2[0] || r1[0] === r2[0];
}
return function ( a, b ) {
var pos1 = getPositions( a ),
pos2 = getPositions( b );
return comparePositions( pos1[0], pos2[0] ) && comparePositions( pos1[1], pos2[1] );
};
})();
$('.container1').mousemove(function(e){
var offset = $('.container1').offset();
mouseX = Math.min(e.pageX - offset.left, limitX);
mouseY = Math.min(e.pageY - offset.top, limitY);
mouseX=mouseX*3;
mouseY=mouseY*3;
if (mouseX < 0) mouseX = 0;
if (mouseY < 0) mouseY = 0;
});
$('.container1').click(function(){
proxyTriggerEvent('click');
});
function proxyTriggerEvent(eventName) {
$('.container').find('a,input,.buttons span')
.each(function() { // and loop through them all for testing
if ( overlaps(follower,this) ) { // collision detection for each item
$(this).trigger(eventName); // click the specific element
return false; // break out of the loop
}
});
}
Update:
Fixed a bug where the selector was not targeting the buttons. I misread the tag as <span class="button1"> but it is really <span title="button1">. The selector is now .buttons span instead of .button1,.button2.
Removed the unnecessary filtering of follower with .not('#follower')
Moved the hit detection to the click handler of .container - this way it isn't being run on every single interval frame, only when it really counts.
Moved the event trigger proxy out of the click call, now any event can be triggered, and it can be called as a regular function, e.g.: proxyTriggerEvent('mouseup'); or proxyTriggerEvent('click');

Moving a div when mouse near

I want that the div I created will move when the mouse is getting near to him.
Here is the fiddle link: http://jsfiddle.net/jLAq3/2/
Basic starting code (because I don't have a clue how to do it):
$('#leaf').();

Bind a function to the movement of the mouse. As the mouse moves:
Get the coordinates of the element.
Get the coordinates of the cursor.
Compare cursor coordinates with element coordinates.
If cursor is near element, move element - else do nothing.
Easy stuff.

This is a start. Every time the mouse is moving outside the leaf then a message appears.
$('body').mousemove(function(e){
var w = $('#leaf').outerWidth(),
h = $('#leaf').outerHeight(),
x = e.pageX,
y = e.pageY;
if(x > w && y > h)
{
console.log("The leaf is moving");
}
})
Furthermore you can apply some css with js to the leaf for movement etc. In a more complex example you have to spot more carefully the position and not simply rely on the width and the height of the image.

Here is a start.
http://jsfiddle.net/Lpg8x/80/
$( 'body' ).mousemove( function( event ) {
if( isNear( $( '#near' ), 20, event ) ) {
$( '#near' ).html( 'is near!' );
} else {
$( '#near' ).empty();
};
} );
function isNear( $element, distance, event ) {
var left = $element.offset().left - distance,
top = $element.offset().top - distance,
right = left + $element.width() + ( 2 * distance ),
bottom = top + $element.height() + ( 2 * distance ),
x = event.pageX,
y = event.pageY;
return ( x > left && x < right && y > top && y < bottom );
};
Have fun!

Here is a basic working example of how you actually would do all that
http://jsfiddle.net/jLAq3/10/
var leafX = 0, leafY = 0;
$('#leaf').css({position: 'relative'});
$(document).mousemove(function(e){
var offset = $('#leaf').offset()
,x1 = offset.left - 20
,x2 = offset.left + $('#leaf').width() + 20
,y1 = offset.top
,y2 = offset.top + $('#leaf').height() + 20
,center, mousePos
;
if(e.pageX > x1 && e.pageX < x2 && e.pageY > y1 && e.pageY < y2) {
center = (x2 - x1) / 2;
mousePos = e.pageX - x1;
if(mousePos < center) {
leafX += 20;
} else {
leafX -= 20;
}
center = (y2 - y1) / 2;
mousePos = e.pageY - y1;
if(mousePos < center) {
leafY += 20;
} else {
leafY -= 20;
}
}
$('#leaf').css({ top : leafY + 'px', left : leafX + 'px'});
});
But you should really learn the basics of DHTML before jumping into things, for example the difference between position absolute and relative, how to actually move HTML elements, layering, event binding etc.
Here are couple of good resources:
http://www.quirksmode.org/sitemap.html
http://www.w3schools.com/

How do i get relative dimensions of scrollbale window viewport

I am having a Tooltip (larger image view) that is being positioned via e.pageX e.pageY and i am trying to make sure it is not hidden below the current scrolled view port.
I have seen many sites have this
my code is something like this but i am missing something.
var positionImg = function(e) {
var viewportWidth = $(window).width();
var viewportHeight = window.innerHeight ? window.innerHeight : $(window).height();
var mouseAtY = e.pageY;
var mouseAtX = e.pageX;
var maxBottomVPos = viewportHeight-"i dont know";
var maxTopVPos = 30;
if (mouseAtY >= maxBottomVPos)
{
tPosX = mouseAtX+ 10;
tPosY = mouseAtY -520;
}
else if (mouseAtY <= maxTopVPos)
{
tPosX = mouseAtX;
tPosY = mouseAtY +40;
}
else
{
tPosX = mouseAtX;
tPosY = mouseAtY +20;
}
$zoomContainer.css({top: tPosY, left: tPosX});
};

var maxBottomVPos = viewportHeight-"i dont know";
You probably don't want to go any lower than the height of the element that you are positioning. So use the height of zoomContainer to figure out how much higher it needs to go. This way, the whole thing can be included. Of course, you'll have to consider that the user might shrink the screen too small to fit the container.
To get the scroll offset use scrollTop. With this you will have both the size of the viewport and how far down the viewport is.

I found the answer:
Quite simple:
var positionImg = function(e) {
cntnrH = $zoomContainer.height() + 230;
calHight = e.pageY - $(window).scrollTop() + cntnrH;
docH = $(window).height()
var mouseAtY = e.pageY;
var mouseAtX = e.pageX;
if (calHight >= docH)
{
tPosX = mouseAtX + 5;
tPosY = mouseAtY - cntnrH;
}
else if (calHight <= calHight){
tPosX = mouseAtX;
tPosY = mouseAtY + 15;
}
else
{
tPosX = mouseAtX;
tPosY = mouseAtY +20;
}
$zoomContainer.css({top: tPosY, left: tPosX});
};
doIt = $("img.hovelble");
doIt.hover(showZoomImg, hideZoomImg).mousemove(positionImg);
});