Knockout-hint

Knockout binding handler that allows you to display hints on the page about any background work that's performing right now.

Gimme it right now!!!

npm install knockout-hint

Intro

How many times did you used visible binding to display / hide any element on the page to show that any background work is performing?

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Stop using visible binding!

Knockout-hint to the rescue!

Knockout hint binding allows you take care of such things.

<button data-bind="click: load">Load</button>
<span data-bind="hint: isLoading">
  Loading...
</span>

var VM = function () {
    var _isLoading = ko.observable(false),
            _load = function () {
                // background work goes here...
                _isLoading(true);

                // emulating the work
                setTimeout(function () {
                    _isLoading(false);
                }, 1000);

            };

    return {
        isLoading:_isLoading,
        load:_load
    };
};

ko.applyBindings(new VM());

Features

The previous example is what you need to get started. Knockout will take care of the hint property, and will show, or hide the hint element on the page.

Default implementation is that it's using .hidden CSS class to hide the element. That CSS rule will be added to the bottom of the page by default. You shouldn't care of that.

In case you want use your own CSS class to make the hint hidden, you can override the defaults by passing binding options.

Options:

<button data-bind="click: load">Load</button>
<span data-bind="hint: isLoading, hintOptions: { hiddenClass: 'custom-hidden' }">
    Loading... (This is hidden by custom css class)
</span>

That makes it very easy to integrate with your CSS library (hello Twitter Bootstrap 😃 ), or any other logic on the page.

I should care of the hint element and additional VM property... REALLY?

Yes! 😉

This is very simple helper, and you need insert all hint elements by your own. That makes it very flexible for usage. There is no any dynamically inserted html element. You can place so many hint elements on the page as you wish.

Licence

MIT