Tag Archives: javascript

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28 Posts

Writing web-based line of business applications entails creating a lot of views with tables.

There are many jQuery table plugins and Angular directives for rendering tables, but I created my own for, primarily, read only tables.

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I’ve been using the jQuery plug-in “toastr” for quite some time as a basic growl/notification system. As a basic service, it’s dead simple to wire up. If you don’t know what this plug-in does, check out the demo of it.

But, I found that I needed more interactivity than basic hide/show messaging scenarios. I needed to be able to render full templates inside of the toast messages to allow for interactivity bound to DOM events.

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Ok, I couldn’t think of a good title for this post. But, I found this concept to be pretty interesting.

Basically, I wanted a directive that would allow me to watch AND set a property as if it were a state changing bool. This needs a bit more explaining, I’m sure.

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In case you hadn’t noticed, I use JsFiddle for most of JavaScript demos and to embed samples into my blog. I like JsFiddle, but it does have a few annoyances.

As a result, I started looking at some alternates.

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To make some of the demos I’ve been posting lately, especially Angular and JavaScript demos, easier to download/use, I’ve made a Github repo to house the source and demo code.

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In most of the UI’s I work on lately, it’s necessary to provide start and end date selection. The typical use case is for setting date ranges for searching and storage of effective dates.

Being that these are typically Angular applications, tying into Angular’s form validation makes a lot of sense.

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Mutliselect drop-downs are somewhat of a pain. It’s always nice when things are simple and discrete. But, the world is not simple and discrete. Life isn’t simple and discrete.

I find myself many times in need of a good, general purpose multiselect dropdown with checkboxes. There are many options for multiselect, like select2, but for some reason having discrete checkboxes is generally overlooked. This is where rolling my own came into play.

EDIT: Be sure to check out the updated info. for this directive. https://long2know.com/2016/05/angular-multiselect-dropdown-updated/

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Earlier today, I helped a colleague on a small issue. That issue was giving focus to an element in a modal once the modal is loaded.

This seems trivial, but it’s actually not entirely straight-forward due to Angular’s digest cycle.

As usual, I wanted to wrap this into a reusable directive.

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Earlier today, I started looking at Angular 2.0 and the differences with Angular 1.x. The primary difference, aside from API changes, is that Angular 2.0 uses ECMAScript 6 (ES6 JavaScript).

ES6 is quite different from ES5. To be honest, I am still wrapping my head around the differences between ES6 and ES5. From a cursory perspective, many components/modules/elements that previously required JavaScript libraries are now native. Additionally, ES6 is more class driven than ES5 and supports observables.

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While working with an Angular application that involved selecting rows in a table with checkboxes, I found that the requirements necessitated having a ‘select all’ checkbox.

Selecting all elements is a common, and usually pretty easy, mechanism to incorporate. But, if you want an indeterminate, or tri, state, for your top-level checkbox selector, it becomes a little more involved.

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