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JavaScript Glossary: Array unshift() Method


Basics The unshift array method appends a number of values to the start of a given array. It then returns the new length of the array. This method can take a number of argumen

​​Avoiding those dang cannot read property of undefined errors


​​​​Uncaught TypeError: Cannot read property 'foo' of undefined.​ The dreaded error we all hit at some point in JavaScript development. Could be an empty state from an API that returns differently than you expected. Could be something else. We don’t know because the error itself is so general...

Where Do You Nest Your Sass Breakpoints?


I love nesting my @media query breakpoints. It's perhaps the most important feature of Sass to me. Maybe I pick a method and do it like this: .element { display: grid; grid-template-columns: 100px 1fr; @include breakpoint(baby-bear) { display: block; } } That's straightforward enough....

JavaScript Glossary: Array .splice() Method


Basics The splice array method changes an existing array by removing, adding and/or replacing specified elements from it. The method mutates the array and returns an array of

JavaScript Glossary: Array .slice() Method


Basics The slice array method copies a given part of an array returning the selected part as an array. It doesn’t mutate the given array rather, it returns a new array

JavaScript Glossary: Array .map() Method


Basics The map() method takes a callback method that performs an operation on the elements in the array. It returns a new array containing the resulting values of running the

JavaScript Glossary: Array.some()


Basics This method checks if any of the elements contained in an array passes a set test. If at least one of the elements passes this test, true is returned. This method only

Revisiting the abbr element


An irresistible HTML element deep dive from Ire Aderinokun, this time on the <abbr title=""> element for abbreviations. You can kinda just use it (JUI) and it works fine, but if you're hoping to make a tooltip for them (which works on touchscreens as well), then it's much more complicated....

HTML, CSS and our vanishing industry entry points


Rachel Andrew: There is something remarkable about the fact that, with everything we have created in the past 20 years or so, I can still take a complete beginner and teach them to build a simple webpage with HTML and CSS, in a day. We don’t need to talk about tools or frameworks, learn how...

Animate a Blob of Text with SVG and Text Clipping


I came across this neat little animation in a designer newsletter — unfortunately, I lost track of the source, so please give a shout out if you recognize it! In it, a block of text appears to bleed into view with a swirl of colors, then goes out the same way it came in. It’s a slick effect and...

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