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Nalezeno "David Klečka": 1065

React indeterminate


I’ve fallen in love with React.js and JSX over the years; state-based rendering and a logical workflow have made me see the light of this modern framework. That doesn’t mean I don’t sometimes get a bit frustrated that the “simple” things seem harder than they should...

Amazing User Agent API with userstack


We do our best to design and code websites so that they look and perform the way they should regardless of device or browser, but the truth is we sometimes we need to code for specific device, browser, or crawler. Whether it’s a quick hack or a simply wanting to display different content...

JavaScript Labels


No matter how long you’ve been a JavaScript developer, there will always be language features that you didn’t know about until you saw them in a fringe piece of code. Your reaction generally is a bit like: One of those features I see developers quizically trying to figure out...

Colorized Brackets for IDE


Coders treat their text editors and IDE’s like fragile beings, and for good reason: we spend a ton of time in them and having our tweaks and extensions can make us incredibly productive for our personal workflows. I always love hearing about what extensions and workflows other developers...

Piecing Together Approaches for a CSS Masonry Layout


Masonry layout, on the web, is when items of an uneven size are laid out such that there aren't uneven gaps. I would guess the term was coined (or at least popularized) for the web by David DeSandro because of his popular Masonry JavaScript library, which has been around since 2010. JavaScript...

Git Checkout at Previous Timeframe


In the past I’ve blogged about checking out branches created on a specific date as well as sorting git branches by date, but one frequent usage of git and dates is checking out a commit at a given time in the past. For example, I often say “Weird, this feature was working a month...

Background Sync with Service Workers


Service workers have been having a moment. In March 2018, iOS Safari began including service workers — so all major browsers at this point support offline options. And this is more important than ever — 20% of adults in the United States are without Internet at home, leaving these...

How to Change the WordPress Admin Login Logo


There are numerous content management systems that thrive these days but none are as prolific as WordPress. Every client wants the ability to change their website at a moment’s notice and they want to do it themselves, and again, WordPress is the best fit for that. You fit the client with...

How to Change the WordPress Media Upload Directory


One thing I’ve always missed about the “old” way of web development was the simplicity of FTP. No deploy scripts, no fuss: simple drag and drop of files and the files are there. I’ve used FTP for assets on this blog for over a decade but I’m finally ready to be lazy...

Goals for 2019


Every turn of the year is a new opportunity to start over, set goals, and renew optimism that time can heal wounds and drive us to change and achieve. I did really well with my 2018 goals: I started a fun podcast with TrackJS’ Todd Gardener I found my passion again by joining Mozilla’s...

How to Send an iMessage From Command Line


As somewhat of a recluse, believe me when I say that text messages, instant messenger, and iMessage have relieved me of loads of anxiety and wasted time with short, meaningless voice chat. It’s been a decade since these communication types have become popular so we’ve moved on from...

How to Add a User Stylesheet in Firefox


While many like to complain about CSS these days, it’s important to remember how amazing CSS is; the CSS language is: easy to learn easy to read easy to write simple to understand Web developers and designers alike love that CSS allows us to take text/media and present it in a beautiful...

Nested Destructuring


Destructuring in JavaScript can initially feel confusing but the truth is that destructuring can make your code a bit more logical and straight forward. Destructuring does look a bit more complex when you’re looking for a property several objects deep, so let’s have a look at how to...

Force Download with JavaScript


Force download scripts have been an important part of internet usability for a long time.  I can attest to that by the number of times I’ve implemented this feature on the server side and the popularity of my PHP Force Download post, even to this day.  With the web world having...

Regarding CSS’s Global Scope


html { font-family: Roboto, sans-serif; } With the except of some form elements, you've just set a font on every bit of text on a site! Nice! That's probably what you were trying to do, because of the probably hundreds of elements all over your site, setting that font-family every time would...

CSS Ellipsis Beginning of String


I was incredibly happy when CSS text-overflow: ellipsis (married with fixed width and overflow: hidden was introduced to the CSS spec and browsers; the feature allowed us to stop trying to marry JavaScript width calculation with string width calculation and truncation.  CSS ellipsis was also very...

JavaScript waitForever


Writing mochitests for new features in DevTools can be difficult and time-consuming.  There are so many elements interacting in an async manner that I oftentimes find myself using the debugger to debug the debugger!  In the case where it’s unclear what interaction isn’t working...

Sir David Attenborough: „Kolaps civilizace je na obzoru.“


Osud naší civilizace leží v rukou současných světových vůdců. Alespoň podle Davida Attenborougha, který na toto důležité téma promluvil na zahájení United Nations Climate Change Conference (COP24) v polských Katovicích. „Právě nyní čelíme lidmi způsobené katastrofě globálního rozsahu. Naše

Get Viewport Lines and Columns in CodeMirror


CodeMirror is an amazing utility for presenting code in a browser environment.  Syntax highlighting, widgets, and a number of advanced functions make it a unique, useful tool.  When using CodeMirror inside the Firefox DevTools debugger, I found that adding hundreds of column breakpoint widgets...

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