User input from HTML form fields is generally provided to JavaScript as a string. We’ve lived with that fact for decades but sometimes developers need to extract numbers from that string. There are multiple ways to get those numbers but let’s rely on regular expressions to extract those numbers!
To employ a regular expression to get a number within a string, we can use \d+:
const string = "x12345david"; const [match] = string.match(/(\d+)/); match; // 12345
Regular expressions are capable of really powerful operations within JavaScript; this practice is one of the easier operations. Converting the number using a Number() wrapper will give you the number as a Number type.
CSS vs. JS Animation: Which is Faster?
How is it possible that JavaScript-based animation has secretly always been as fast — or faster — than CSS transitions? And, how is it possible that Adobe and Google consistently release media-rich mobile sites that rival the performance of native apps? This article serves as a point-by-point…
Fading Links Using jQuery: dwFadingLinks
UPDATE: The jQuery website was down today which caused some issues with my example. I’ve made everything local and now the example works. Earlier this week, I posted a MooTools script that faded links to and from a color during the mouseover and mouseout events.
Rotate Elements with CSS Transformations
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