JQuery Syntax Check -- Array Data - javascript

var selections = [];
$dragContainerDiv1.on("click", ".draggable1", function (event) {
event.stopPropagation();
var $this = $(event.target);
if ($this.hasClass("selected")) {
$this.removeClass("selected");
selections.splice(selections.indexOf($this), 1);
}
else {
selections.push($this);
$this.addClass("selected");
initDraggable($this);
}
});
My arrays don't seem stable and I'm thinking it's because my jQuery syntax is not right. The click event is occurring on a list of div tags which contain text, data-id, and data-text. The idea is to be able to multi-select the draggable divs.
So, when initially clicked, it adds the div to the array and highlights it. When clicked again, it removes the div from the array. Eventually, the group of selected divs are dragged to the drop zone, where I recover the data and post it to the server.
If I click rapidly through multiple divs, it appears that the selected divs are not always the ones in the array.

Your removing of $this from your selections array isn't working. selections.indexOf($this) is always returning -1, and therefore your selections.splice(-1, 1) is removing the last element from selections. What you want to store in selections is the element contained in the $this object:
selections.push($this[0]);
And when removing:
selections.splice(selections.indexOf($this[0]), 1);

Related

Swap Divs then swap selected option value between two select lists

The Problem:
Before I began adding the div swaps, I could only type into the left (from_value) input and the result of the calculations would be applied via ajax to the right (to_value) input.
I would like to allow the user to type into either box and have the results display in the opposite box they're typing in.
What I am doing to make this happen:
I am swapping the left div with the right div on mouseover of the to_value input. Here's the code i'm using to do the swap:
$.fn.swapWith = function (that) {
var $this = this;
var $that = $(that);
// create temporary placeholder
var $temp = $("<div>");
// 3-step swap
$this.before($temp);
$that.before($this);
$temp.after($that).remove();
return $this;
};
var leftSide = $('#left-side');
var rightSide = $('#right-side');
$('#to_value_input').on('mouseover', function () {
$(rightSide).swapWith(leftSide);
});
This effectively swaps the divs, bringing along with it ids and names of the inputs which retains functionality of my server-side script to perform calculations. As expected, the from_unit select list and to_unit select list are swapped and their values / displayed text are also swapped from one side to the other.
I would like to swap the values and text of the two select boxes either directly before or more likely, directly after the div swap so it appears as if nothing changed on screen.
Similar questions that I have reviewed:
How to swap values in select lists with jquery?
How to swap selected option in 2 select elements?
I have tried several variations of each of the provided solutions. This seems like it should be a fairly simple thing to do but I find myself stuck. Any further help would be greatly appreciated.
The full code base is available on github if you need to see it: https://github.com/pschudar/measurement-conversion
I have made minor changes to the code hosted there to accommodate the div swaps.

jQuery $.change function not working with cloned select

I have a table with a button that adds a row to the bottom by cloning the last row. Each row contains a <select> with a different name (0-9), all <select> objects have the .variable_priority class. When pressing the button, the row gets copied successfully and I manage to change the name correctly (10, 11, 12, etc.), and the row gets the same class since it is a perfect copy.
However, when I execute the following function, I encounter problems with cloned table rows:
$('.variable_priority').change(function() {
var selections = new Array();
$(".variable_priority").each(function() {
selections.push($(this).find('option:selected').val());
});
// Iterating on Options of Select
$('.variable_priority').children('option').each(function() {
$(this).removeAttr('disabled');
if($.inArray($(this).val(), selections) !== -1){
if($(this).val() != 0){
if($(this).is(':selected')){
// nothing
} else {
$(this).attr('disabled', true);
}
}
}
});
});
The function should run each time I change the selected option of a <select>, though it only runs with the 10 original ones. This function is not executed when I change the option in a cloned row. However, if I change the value in one of the originals, the function runs and it also adds the values from the cloned rows to the selections array.
So for some reason, the code recognizes that the clones have the same class, but it doesn't run when changing their values.
EDIT: short description of the code above; if I change the selected value of a <select>,the function will add all selected options to an array and disable every selected option in the selects, except in the box where the value itself is selected (if I select '2' in the first box, '2' gets disabled in all other boxes).
Because your select element is dynamic (It is added to the DOM after the initial page load, or to be specific; after the initial event handler attachment) you will need to delegate your change event handler:
$(document).on('change', '.variable_priority', function() {
});
Rather than use document though, you'll want to attach the event handler to the closest static element to .variable_priority.
JSFiddle
I think the code isn't executed on the new clones.
This script is loaded on start. It has to do it over for each new children.. Maybe after adding a new, run this script specific for that new one.

Get select2 selected items using data to prevent sorting

I've doing some research about a problem I'm having with jQuery select2 plugin. The select2 sorts the selected items (no matter which order you choose them) when posting form. I know it may not be a select2 specific bug, but standard html select behaviour.
Now, how could I get the selected items IDs and then put them in a comma separated list in a hidden input so I can respect the order the items were chosen?
$("#formpacint").submit(function (event) {
var data = $('#campoprofesionales').select2('data');
$('#hidprofesionales').val(data);
});
The above code puts the selected items (in the order they were chosen) using its data property, into the hidden input, but the console.log shows them as objects (text+id I guess)..
I'd need to have: 35,14,29 (the ids of selected items as they were selected without sorting)
Thanks
Found a solution
var selections = (JSON.stringify($("#campoprofesionales").select2('data')));
var obj = $.parseJSON(selections);
$.each(obj, function() {
console.log(this.id);
// I here set a hidden field with the ids in the order they were selected
});

JQueryMobile: Listview filter - How can I get the resulting list?

I dynamically generated my listview. Now, every li element of the listview ul has a specific event due to event binding during the generation of the list. Now this listview data-filter="true".
Then from another textfield(from another jqm page), I need to input a string, on which upon keyup of enter I need to pass the value to the filter fieldtext(the one for filtering of the listview) then get the li elements that corresponds to the passed value.
Can anyone point me to the right direction?
I approach it in a different way:
$.each($('#myListView').children(),function(){
var text = $(this).attr("data-filtertext");
if(text.toLowerCase().search(search) > 0){
//do event
//Since I generate the data-filtertext attr,
//and I've guarantee that it wont have duplicate, so:
$(this).children("a").click();
}
});

jQuery UI multiple selections

see this demo from jquery ui
you have to hold down the Ctrl key to make multiple selections
I really like the code but I don't want to force my visitor to press ctrl key
I want the code to allow multiple selections without holding ctrl key
is this possible?
I asked you a questions in the comments but I'll just write up a simple selection solution so you can see what I was thinking.
So basically you can use the jquery toggle() effect to roll your own selector. When a user clicks you'll add the orange class, when he clicks again it will remove the orange class.
$(document).ready( function() {
$('ul#selectable li').toggle( function() {
$(this).addClass('orange'); }, function() {
$(this).removeClass('orange'); } );
});
Then all your job is to grab all the li elements with the orange class and post them to a form or whatever your end goal is. Haven't checked this code but what your doing is asking for all the li elements within selectable that have the orange value at the end of the class attribute.
With the code below I'm creating a new array and then adding the text() value of each "orange li" into it.
var theSelections = new Array();
$('ul#selectable li[class$="orange"]').each( function(i) {
theSelections[i] = $(this).text();
});
Yes. However, the implementation would have to allow selected items to be deselected when clicked on a second time. You would just need to modify the code slightly to achieve this.
Do a .selectable( 'Enable' ) on all the items.
Then you will need to do a .selectable( 'toggle' ) onClick on all items.
That should do the trick.

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