jQuery UI Selectable - unselect selected item on click

问题

Does anyone know if there's a way to configure a jquery ui selectable element to unselect the selected element when you click it? Sort of like a toggle. If it's already selected, unselect it, otherwise do the default behavior.

Thanks.

回答1:

i'm very late in responding to your question, but let me just answer it anyway so that to keep it as a reference for others.

$( ".selector" ).bind( "mousedown", function ( e ) {
    e.metaKey = true;
} ).selectable();

this will allow the toggle behavior that you're looking for.

回答2:

Well here's what I just ended up doing. I used a class name to toggle selecting and unselecting. I'd love to hear if there is another option:

$("#selectable").selectable({
    selected: function (event, ui) {
        if ($(ui.selected).hasClass('selectedfilter')) {
            $(ui.selected).removeClass('selectedfilter');
            // do unselected stuff
        } else {            
            $(ui.selected).addClass('selectedfilter');
            // do selected stuff
        }
    },
    unselected: function (event, ui) {
        $(ui.unselected).removeClass('selectedfilter');
    }
});

回答3:

If you want that existing selections be preserved and yet have the toggle operation, you simply need to ignore the unselected event for the solution given. Also you need to remove the ui-selected class.

$("#selectable").selectable({
selected: function (event, ui) {
    if ($(ui.selected).hasClass('selectedfilter')) {
        $(ui.selected).removeClass('selectedfilter').removeClass('ui-selected');
        // do unselected stuff
    } else {            
        $(ui.selected).addClass('selectedfilter').addClass('ui-selected');
        // do selected stuff
    }
}
});

回答4:

Is this what you mean?

This event is triggered at the end of the select operation, on each element removed from the selection.

Code examples

Supply a callback function to handle the unselected event as an init option.

$( ".selector" ).selectable({
   unselected: function(event, ui) { ... }
});
Bind to the unselected event by type: selectableunselected.
$( ".selector" ).bind( "selectableunselected", function(event, ui) {
  ...
});

Source:

http://jqueryui.com/demos/selectable/#event-unselected

来源：https://stackoverflow.com/questions/3946462/jquery-ui-selectable-unselect-selected-item-on-click