Make a dynamically generated div droppable - javascript

I am working on a Table with div inside the cell, and I want that div to be droppable.
And when I drop something in a div it generate a new div under the first one.
But the dynamically generated div must be droppable to and now it's not...
Here is the creation of a div:
// in a loop with i
divCreate = $("<div>", { id: "divCreate" + i, class: "droppable" });
$(divCreate).css("text-align", "center");
$(divCreate).css("width", "125px");
$(divCreate).css("height", "30px");
$(Cell).append($(divCreate));
JS droppable :
$(".droppable").droppable( function() {
// a lots of line with several function
})
So I try to add that $(divCreate).droppable(); to the creation of the div. Now the div is droppable but not with the JS function that I affect to the class ".droppable".
Do I need to make $(divCreate).live("droppable"); ? Or is it impossible and I need to put all the code from the JS function to the div creation? I really want to avoid that if it is possible.

Move the droppable code into a named function:
function my_droppable() {
// a lots of line with several function
}
And change your general binding to:
$(".droppable").droppable(my_droppable);
Then you can do:
divCreate.droppable(my_droppable);
after appending new elements dynamically.

Try to use:
$(divCreate).appendTo($(Cell)).droppable();

Here is the sample I have created.
$( "<div/>", {
"class": "test",
id:"myDiv",
text: "Drag me!",
width:"125",
height:"30",
'text-align':"center"
}).appendTo( "#droppable" );
$("#myDiv").css("text-align", "center");
$("#droppable" ).draggable();

Related

Target dynamic element in jQuery

I have a select menu which is being created dynamically in a javascript file. I have set the css to display:none so that the styling can happen silently before it is loaded. However, I am having trouble targeting it to make it display again. What's a fool-proof way to target it (or any dynamically created select menu) once it's attached to the DOM? Thanks for any insight.
Initial code loading the select menu:
createDropdown:function(oLetter){
var dropDwn = create({type:"select",id:"glossaryWordDropdown", className:"glossarySelect"});
for(var i=0;i<oLetter.arWords.length;i++){
var oWord = oLetter.arWords[i];
$('<option />', {value: oWord.id, text: oWord.id}).appendTo(dropDwn);
}
$(dropDwn).on('change', this.onDropDown.bind(this));
//add to the wordHolder box
var wordHolderElement = this._screen.getElementById("wordHolder");
wordHolderElement._container.innerHTML = "";
$(wordHolderElement._container).append(dropDwn);
},
CSS:
.glossarySelect {display: none};
JQ:
$( window ).load(function() {
$(".glossarySelect").css("display", "block");
});
Custom plugin to make select box styles editable (customSelectMenu):
$(".glossarySelect").customSelectMenu({
menuClass: 'product-select',
openedClass: 'shown',
selectedClass: 'active',
selectionMadeClass: 'selected'
});
Thanks in advance.
Try putting your script inside a doc ready listener
$(document).ready(function() {
$("select").show();
});
Or try something like this to make sure you have access to elements
https://stackoverflow.com/a/29514359/1845664

remove onclick when attached to children

I have the following code:
layoutOverlaysBldg = $("#layout-overlays-bldg")
layoutOverlaysBldg.on("click", "div", function(event) {
var floor;
console.log("floornum: " + this.dataset.floornum);
floor = parseInt(this.dataset.floornum);
...
$("#choose-floor").fadeOut();
$("#choose-apt").fadeIn();
});
later - based on data I'm getting back from the DB - I want to remove some of the .on("click", "div", ...) from only some of the divs. I already have the selector that is getting the right divs but I cannot figure out how to remove the click event. I have tried .off("click") after selecting the right div but it has no effect.
This issue here is because you are using a delegated event. You can add or remove the event for all child elements, but not individual ones given your div selector.
With that in mind the easiest way to do what you need is to add the event based on a class, then add and remove that class on the children as needed. Something like this:
layoutOverlaysBldg = $("#layout-overlays-bldg")
layoutOverlaysBldg.on("click", "div.clickable", function(event) {
// your code...
});
You can then enable/disable the event on the child div by adding or removing the .clickable class.
You can try like this :
Example :
<div id="test">
<div id="first">first</div>
<div id="second">second</div>
</div>
<div onclick="unbindSecondDiv();">UNBIND</div>
<script>
function unbindSecondDiv()
{
test = $("#second")
test.unbind("click");
alert('Selected Area Click is Unbind');
}
$(document).ready(function(){
//BIND SELECTED DIV CLICK EVENT
test = $("#test > div")
test.bind("click" , function(event) {
alert($(this).attr('id'));
});
});
</script>
In the above example , selected DIV elements click event is bind.
And after execute function unbindSecondDiv() , second DIV click event will be unbind.
Have a try , may helps you.

execCommand insertHtml, outer div not inserted why?

Why is the DIV not inserted but only the IMG ?
$(document).ready(function() {
$(document).on('click', '#insertImage', function(){
/*
Why is the DIV not inserted ?
*/
var item = "<div class='resizable'><img src='http://www.rockiesventureclub.org/wp-content/uploads/2013/02/flower-icon.png'></div>";
document.execCommand('insertHTML', false,item);
})
});
see:
http://jsfiddle.net/daslicht/gU2jP/#base
Why not doing it with jQuery since you already use it??
http://jsfiddle.net/gU2jP/5/
var _$div = $('<div>'),
_$img = $("<img class='resizeable' id='myImg' src='http://imperavi.com/img/library.jpg' />");
_$div.append(_$img);
$('body').append(_$div);
The background of the Question was the following:
I just like to be able to make the added Image Float Left or Right.
Since jQueryUI automatically adds a wrapper-div around each resizeable item I thought that I need to add it somehow manually in order to assign a id to it.
doug65536 on Freenode helped me to create this solution without the need to create an additionally div manually:
We also discovered that the Fiddle wont work properly in safari
$(document).on('click', '#insertImage', function () {
document.execCommand('insertHTML', false,
"<img class='resizeable' id='myImg' src='http://imperavi.com/img/library.jpg'>");
$(".resizeable").resizable({
aspectRatio: true
}); //just a try here
$('#myImg').parent().css({
'float':'left',
'margin':'15px'
});
})
http://jsfiddle.net/daslicht/6cGbQ/
Thank you very Much !

how to repeat same Javascript code over multiple html elements

Note: Changed code so that images and texts are links.
Basically, I have 3 pictures all with the same class, different ID. I have a javascript code which I want to apply to all three pictures, except, the code needs to be SLIGHTLY different depending on the picture. Here is the html:
<div class=column1of4>
<img src="images/actual.jpg" id="first">
<div id="firsttext" class="spanlink"><p>lots of text</p></div>
</div>
<div class=column1of4>
<img src="images/fake.jpg" id="second">
<div id="moretext" class="spanlink"><p>more text</p></div>
</div>
<div class=column1of4>
<img src="images/real.jpg" id="eighth">
<div id="evenmoretext" class="spanlink"><p>even more text</p></div>
</div>
Here is the Javascript for the id="firsttext":
$('#firstextt').hide();
$('#first, #firsttext').hover(function(){
//in
$('#firsttext').show();
},function(){
//out
$('#firsttext').hide();
});
So when a user hovers over #first, #firsttext will appear. Then, I want it so that when a user hovers over #second, #moretext should appear, etc.
I've done programming in Python, I created a sudo code and basically it is this.
text = [#firsttext, #moretext, #evenmoretext]
picture = [#first, #second, #eighth]
for number in range.len(text) //over here, basically find out how many elements are in text
$('text[number]').hide();
$('text[number], picture[number]').hover(function(){
//in
$('text[number]').show();
},function(){
//out
$('text[number]').hide();
});
The syntax is probably way off, but that's just the sudo code. Can anyone help me make the actual Javascript code for it?
try this
$(".column1of4").hover(function(){
$(".spanlink").hide();
$(this).find(".spanlink").show();
});
Why not
$('.spanlink').hide();
$('.column1of4').hover(
function() {
// in
$(this).children('.spanlink').show();
},
function() {
// out
$(this).children('.spanlink').hide();
}
);
It doesn't even need the ids.
You can do it :
$('.column1of4').click(function(){
$(this); // the current object
$(this).children('img'); // img in the current object
});
or a loop :
$('.column1of4').each(function(){
...
});
Dont use Id as $('#id') for multiple events, use a .class or an [attribute] do this.
If you're using jQuery, this is quite easy to accomplish:
$('.column1of4 .spanlink').hide();
$('.column1of4 img').mouseenter(function(e){
e.stopPropagation();
$(this).parent().find('.spanlink').show();
});
$('.column1of4 img').mouseleave(function(e){
e.stopPropagation();
$(this).parent().find('.spanlink').hide();
});
Depending on your markup structure, you could use DOM traversing functions like .filter(), .find(), .next() to get to your selected node.
$(".column1of4").hover(function(){
$(".spanlink").hide();
$(this).find(".spanlink, img").show();
});
So, the way you would do this, given your html would look like:
$('.column1of4').on('mouseenter mouseleave', 'img, .spanlink', function(ev) {
$(ev.delegateTarget).find('.spanlink').toggle(ev.type === 'mouseenter');
}).find('.spanlink').hide();
But building on what you have:
var text = ['#firsttext', '#moretext', '#evenmoretext'];
var picture = ['#first', '#second', '#third'];
This is a traditional loop using a closure (it's better to define the function outside of the loop, but I'm going to leave it there for this):
// You could also do var length = text.length and replace the "3"
for ( var i = 0; i < 3; ++i ) {
// create a closure so that i isn't incremented when the event happens.
(function(i) {
$(text[i]).hide();
$([text[i], picture[i]].join(',')).hover(function() {
$(text[i]).show();
}, function() {
$(text[i]).hide();
});
})(i);
}
And the following is using $.each to iterate over the group.
$.each(text, function(i) {
$(text[i]).hide();
$([text[i], picture[i]].join(', ')).hover(function() {
$(text[i]).show();
}, function() {
$(text[i]).hide();
});
});
Here's a fiddle with all three versions. Just uncomment the one you want to test and give it a go.
I moved the image inside the div and used this code, a working example:
$('.column1of4').each(function(){
$('div', $(this)).each(function(){
$(this).hover(
function(){
//in
$('img', $(this)).show();
},
function(){
//out
$('img', $(this)).hide();
});
});
});
The general idea is 1) use a selector that isn't an ID so I can iterate over several elements without worrying if future elements will be added later 2) locate the div to hide/show based on location relational to $(this) (will only work if you repeat this structure in your markup) 3) move the image tag inside the div (if you don't, then the hover gets a little spazzy because the positioned is changed when the image is shown, therefore affecting whether the cursor is inside the div or not.
EDIT
Updated fiddle for additional requirements (see comments).

jQuery UI Sortable on Click

I have the jQuery UI sorting functionality working fine, but I would also like to add in a basic click action to cause the draggable items to change <ul>. I have the <div class="click_area"> disabled from dragging. What I would like is in the first <ul> if the click_area is clicked then the sortable <li> would move to the second <ul> just as if I had dragged it over. Same deal if the click_area is clicked in the second <ul> it will be moved to the first <ul>. I have created a JS Fiddle for testing: http://jsfiddle.net/helpinspireme/wMnsa/
Any suggestions would be greatly appreciated. Thanks.
$("#unassigned_list, #recipients_list").sortable({
connectWith: ".connected_sortable",
items: "li",
handle: ".draggable_area",
stop: function(event, ui) {
updateLi(ui.item);
}
}).disableSelection().on("click", ".click_area", function() {
// First figure out which list the clicked element is NOT in...
var otherUL = $("#unassigned_list, #recipients_list").not($(this).closest("ul"));
var li = $(this).closest("li");
// Move the li to the other list. prependTo() can also be used instead of appendTo().
li.detach().appendTo(otherUL);
// Finally, switch the class on the li, and change the arrow's direction.
updateLi(li);
});
function updateLi(li) {
var clickArea = li.find(".click_area");
if (li.closest("ul").is("#recipients_list")) {
li.removeClass("ui-state-default").addClass("ui-state-highlight");
clickArea.html('←');
} else {
li.removeClass("ui-state-highlight").addClass("ui-state-default");
clickArea.html('→');
}
}
​
Here is a starting place for you,
.on('click', '.click_area', function(){
$(this).parent().appendTo($("#unassigned, recipients").not($(this).closest("ul")));
})
The trick being that the click handler is on the parent container not the individual children, so when they are moved you don't need to keep managing their handlers.
All you need to do is update the stylings.
jsFiddle

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