Move draggable objects to top of the screen or Div? - javascript

I have draggable objects inside of a div. I'm trying to figure out how to allow a user to click a button and move the objects to an exact point on the screen (Even if they've dragged the object to a new location)
Any way to animate an object to the top of the screen regardless of where the object starts? (See working JSFiddle) Thanks!
I've been trying the code below but I cannot get it to work correctly.
var json = [
{'x' : '200' , 'y' : '200'},
];
function initPage() {
$.each(json, function() {
$("#point").animate({
left: this.x,
top: this.y
},
"linear");
});
}
https://jsfiddle.net/unppstma/15/

Add another function to the onclick event on your button, with something like this:
function moveToTop(){
$('#draggable1, #draggable2').animate({
"position": "absolute",
"top" : "0"
})
}

Related

Understanding jBox configuration options

I was just playing around with this plugin called jBox.js and came across a few new options. It's a pretty customizeable plugin. The option I am talking about is adjustDistance.
The documentation says, you can pass in an integer or object, like so:
$(function(){
$('.tooltip').jBox('Tooltip', {
trigger: 'click',
adjustDistance : {
top : 15,
bottom : 15,
left : 15,
right : 50
}
});
});
I did that , but I don't see any difference in the way my tooltip is rendered, made a FIDDLE HERE.
The documentation describes this option as follows:
Distance to the window edge when adjusting should start. Use an object
to set different values, e.g. {top: 50, right: 20, bottom: 5, left:
20}
But I don't quite understand its usage. Can anybody explain?
If we give adjustDistance say 10, the tooltip will try to adjust(reposition) itself when any of window's edge is within 10px distance of the tooltip. You can give custom values for different edges of window as well.
This examples will make it clear:
Example 1:
$(function(){
$('.tooltip').jBox('Tooltip', {
trigger: 'click',
adjustDistance : {
top : 15,
bottom : 15,
left : 15,
right : 50
}
});
});
Example 2 (changing value for adjustDistance bottom):
$(function(){
$('.tooltip').jBox('Tooltip', {
trigger: 'click',
adjustDistance : {
top : 15,
bottom : 150,
left : 15,
right : 50
}
});
});
For both of them, try clicking on button to open tooltip and then resize the window shrinking from bottom such that tooltip needs to readjust.

Two problems with jquery script: z-index and setTimeout

have a side menu on the left side of the website. I want the submenu to slide open to the right with a neat animation. I have made the script:
jQuery(document).ready(function($){
$(".main-navigation ul li").mouseenter(function() {
if ($(this).children().length > 0) {
$(this).children("ul").css ({
"display" : "block",
}).animate({
left: '250px',
opacity: 1,
}, 500)
}})
.mouseleave(function() {
setTimeout(function() {
$(this).children("ul").css({
"display" : "none",
"left" : "0px",
"opacity": 0,
})
}, 1000);
});
});
Sliding works just fine. The menu shows up nicely.
There's two problems though. One is, that the menu z-index doesn't work. The submenu's ul has a negative index set in css but when it slides it goes OVER the main ul. I want it to go UNDER the menu so it doesn't show.
Second one is, the SetTimeout function doesn't seem to work. Once the mouse leaves the area the ul just stays there forever. Without the Settimeout function it disappears just nicely (instantly though, I want it to stay there awhile).
I have made a jsfiddle example
http://jsfiddle.net/r8vx07ae/4/
Problem with z-index:
An element can not appear behind its parent. Since the submenu exists as a child element of the menu, it will not be able to appear behind the menu, z-index is really only applicable to two elements which share the same parent.
Problem with setTimeout:
The issue is most likely being caused because the this variable is out of scope by the time that the timeout occurs. This has an easy fix: create a global variable (say subMenu) and set subMenu = this before the timeout occurs and replace this with subMenu in your timeout function. You may use additional variables or a dictionary/array if you have multiple submenus to prevent the variable from being overwritten if two submenus get opened one right after the other
It is because $(this) is losing its scope on setTimeout function. To overcome this issue, you can assign your $(this) scope into a variable like $this and then use it in your setTimeout function. Here is the code changes:
.mouseleave(function() {
var $this=$(this);
setTimeout(function() {
$this.children("ul").css({
"display" : "none",
"left" : "0px",
"opacity": 0,
})
}, 1000);
});
And here is your updated fiddle:
http://jsfiddle.net/r8vx07ae/5/
The problem with the setTimeout is the scope of this
When it runs, it is the window, not the menu.
jQuery(document).ready(function($){
$(".main-navigation ul li").mouseenter(function() {
/* see if the timer has run yet, if it has not, cancel it */
var hideTimer = $(this).data("timer");
if (hideTimer) window.clearTimeout(hideTimer);
if ($(this).children().length > 0) {
$(this).children("ul").css ({
"display" : "block",
}).stop().animate({
left: '250px',
opacity: 1,
}, 500)
}})
.mouseleave(function() {
/* store the children here to get rid of the "this" scope issue */
var ul = $(this).children("ul");
/* Store a reference to the timer so we can cancel it if they mouseover again */
$(this).data("timer", setTimeout(function() {
ul.css({
"display" : "none",
"left" : "0px",
"opacity": 0,
})
}, 1000));
});
});
This will not fix the z-index issue.
I guess this is from the usage of "this" inside the callback of setTimeout sadly i do not have any computer to test out...
See section "the this problem": https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers.setTimeout#The_%27this%27_problem
To solve it, save a reference of this before the call of setTimeout, and use the saved reference inside your callback

Removing an element by ID (jointJS)

I noticed that JointJS links can be removed by hovering over them and clicking the big red X that appears. But I was wondering if it is possible remove an element once it has been created, without knowing the variable name.
onCreateButtonClick(function(){
var rect = new joint.shapes.basic.Rect({
position: { x: 100, y: 30 },
size: { width: 100, height: 30 }
});
graph.addCell([rect]);
});
onRemoveButtonClick(function(){
//removeRectangle here?
});
My question is: can I remove this rectangle in the second function?
Removing elements by ID can simply be done as: graph.getCell(cellID).remove(). In your onRemoveButonClick(), you have to somehow know which element you want to remove. This depends on you application UI but you can, for example, do something like:
var selected;
paper.on('cell:pointerdown', function(cellView) {
selected = cellView.model;
});
onRemoveButtonClick(function() {
if (selected) selected.remove();
});
I implemented the removal of an element by single clicking the element , using the cellView arguement directly.
paper.on('cell:pointerclick', function(cellView, evt, x, y) {
cellView.remove();
});

Slide boxes with margin-left check if overslided

I made a simple content/box slider which uses the following javascript:
$('#left').click(function () {
$('#videos').animate({
marginLeft: '-=800px'
}, 500);
});
$('#right').click(function () {
$('#videos').animate({
marginLeft: '+=800px'
}, 500);
});
Here is the demo: http://jsfiddle.net/tjset/2/
What I want to do and I can't figure out how to show and hide arrows(left and right box) as the all the boxes slided.
So I clicked 4 time to the LEFT and slided all the boxes! then hide "left" so that you can't give more -800px
What can I do?
What you can do is check after the animation completes to see if the margin-left property is smaller or larger than the bounds of the video <div>. If it is, depending on which navigation button was clicked, hide the appropriate navigation link.
Check out the code below:
$('#left').click(function () {
// reset the #right navigation button to show
$('#right').show();
$('#videos').animate({
marginLeft: '-=800px'
}, 500, 'linear', function(){
// grab the margin-left property
var mLeft = parseInt($('#videos').css('marginLeft'));
// store the width of the #video div
// invert the number since the margin left is a negative value
var videoWidth = $('#videos').width() * -1;
// if the left margin that is set is less than the videoWidth var,
// hide the #left navigation. Otherwise, keep it shown
if(mLeft < videoWidth){
$('#left').hide();
} else {
$('#left').show();
}
});
});
// do similar things if the right button is clicked
$('#right').click(function () {
$('#left').show();
$('#videos').animate({
marginLeft: '+=800px'
}, 500, 'linear', function(){
var mRight = parseInt($('#videos').css('marginLeft'));
if(mRight > 100){
$('#right').hide();
} else {
$('#right').show();
}
});
});
Check out the jsfiddle:
http://jsfiddle.net/dnVYW/1/
There are many jQuery plugins for this. First determine how many results there are, then determine how many you want visible, then use another variable to keep track with how many are hidden to the left and how many are hidden to the right. So...
var total = TOTAL_RESULTS;
var leftScrolled = 0;
var rightScrolled = total - 3; // minus 3, since you want 3 displayed at a time.
instead of using marginLeft I would wrap all of these inside of a wrapper and set the positions to absolute. Then animate using "left" property or "right". There's a lot of code required to do this, well not MUCH, but since there are many plugins, I think you'd be better off searching jquery.com for a plugin and look for examples on how to do this. marginLeft is just not the way to go, since it can cause many viewing problems depending on what version of browser you are using.

position not changing

I'm trying to move a div to one side or the other depending on it's position, BUT! no matter what method I use to chance its position, it doesn't really change.
var $ancho = $(document).width();
var $posP = $("#portafolio").offset().left;
var $porP = Math.floor($posP * 100 / $ancho);
the var porP saves the percentage of the div's (portafolio) position
Now, the initial position of portafolio is 13(%)
if($porP == '13')
{
$("#portafolio").mouseenter(function(){
$("#imge").stop().fadeTo('500', 0.3, function() {});});
$("#portafolio").mouseleave(function(){
$("#imge").stop().fadeOut('500', function() {});
});
$("#portafolio").click(function(){
$("#portafolio").animate({
left: "+=87%",},
{ queue: false, duration: 900, easing:'swing' });
$("#imge").fadeTo('500', 0.3, function() {
});
$(iframe).attr('src','portafolio.html');
$("#marco").fadeTo('500', 1 , function() {});
$(iframe).open();
});
}
but even when I move portafolio to the right, in the animation function, the porP var still shows 13, therefore it never reaches the else
else
{ move to the other side }
I already tried to assign a new value to the porP var inside the click function but to no avail. It just always executes the IF statement.
Does someone know why the value (porP) doesn't change? and how can I actually change it to make the else finally work?
I searched everywhere and tried everything that came to my mind with my very limited knowledge of jquery and got to nowhere. Please!!
edit// #portafolio is a relative positioned div to its parent #contenido which is absolute positioned and is left 20px . #portafolio is left 15% . I don't know if that has something to do.
Alice, I'm not sure exactly what you're trying to do, but the if and else statements probably should be inside the 'click()' handler. Something like,
$("#portafolio").click(function(){
var $ancho = $(document).width();
var $posP = $("#portafolio").offset().left;
var $porP = Math.floor($posP * 100 / $ancho);
if($porP == '13')
{
$("#portafolio").animate({
left: "+=87%",},
{ queue: false, duration: 900, easing:'swing' });
$("#imge").fadeTo('500', 0.3, function() {
});
$(iframe).attr('src','portafolio.html');
$("#marco").fadeTo('500', 1 , function() {});
$(iframe).open();
}
else
{ move to the other side }
});

Categories

Resources