jQuery UI - Slider - How to add values

问题

fiddle - I've got set of values. Is it possible to add new handle or remove some of them without destroying and rebuilding slide instance?

Something like $('#slider').slider('addValueAt',5); or remove.

New value cannot be equal to any of actual, so there may be no more than 12 values.

Its custom code I've got alredy.

$(function () {
    var handlers = [0, 2, 4 , 9, 12];
    $("#slider").slider({
        min: 0,
        max: 12,
        values: handlers,
        slide: function (evt, ui) {
            for (var i = 0, l = ui.values.length; i < l; i++) {
                if (i !== l - 1 && ui.values[i] + 1 > ui.values[i + 1]) {
                    return false;
                }
                else if (i === 0 && ui.values[i] + 1 < ui.values[i - 1]) {
                    return false;
                }
            }
        }
    });
});

I've tried

$("#slider").slider('option','values', newArrayOfValues);

But it only moves actual values, not removing or adding new

回答1:

If you can upgrade to a version 1.10.x of jquery ui, you'd be able to do something like the following:

(function ($) {
    $.widget('my-namespace.customSlider', $.ui.slider, {
        addValue: function( val ) {
            //Add your code here for testing that the value is not in the list
            this.options.values.push(val);
            this._refresh();
        },
        removeValue: function( ) {
            this.options.values.pop( );
            this._refresh();
        }
    });
})(jQuery);

After that, you'd be able to use it like so:

$("#slider").customSlider({/* options */});

And add values:

$("#slider").customSlider('addValue', 5);

In this code, we're creating a new slider widget that inherits from the existing jquery-ui slider. In the addValue method, it's manually updating widget's internal array of values, and then calling the private _refresh() method of the original jQuery-ui slider, which is how the slider generates the handles in the first place when the widget is created. The _refresh() method was added in one of the more recent versions of jQuery ui. If you can't upgrade, this technique would still be possible, but you'd have to write code to inject the markup and bind the drag events.

Here's a fiddle showing this in action http://jsfiddle.net/ac2A3/5/

Your code to handle the slide event would have to change a little since it relies on the widget's values being in order.

来源：https://stackoverflow.com/questions/19348528/jquery-ui-slider-how-to-add-values

标签

jquery

jquery-ui

jquery-ui-slider