Some years ago, I published a post related to apply geometry and in particular trigonometry in client-side web applications with high requeriments of animations and interaction. Today we are going to deepen a bit more in this topic studying a subject a little more advanced in the geometry world: rotation matrices.
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Some years ago, I wrote a post about how to perform a full-text search in JavaScript modifying the DOM to highlight the results.
The aforementioned post has been outdated and there are better ways to perform a search in JavaScript, without using complex regular expressions, and without rewriting completely the HTML container on each search.
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If you are aware of the most used JavaScript frameworks nowadays, surely you have heard about Vue.js. If not, next I’ll describe it for you quickly.
Some days ago, I answered a question on Stack Overflow that asked for emulating a JavaScript Popmotion code using the GreenSock library. The original code animates a geometric plane with a tridimensional effect when it is dragged with the mouse.
Answering that question, the next code resulted, that replicates the same effect using just Vanilla JavaScript
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It has been some time since I don’t post anything, the project in which I’m working takes too much time from me. But this doesn’t prevent me to experiment a bit with the things that apasionate me.
I have wanted to test the performance of the main browsers using CSS3 transformations. In this little experiment, in each mouse movement, 300 DOM elements are transformed.
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Working with JavaScript, if one wants to replace a part of a string with another string, usually, the replace String method is used. This method allows to manipulate a string using another string or a regular expression. Next it is shown how it is used:
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Maths are present in our everyday life. As a popular TV show states: “We all use math every day”. In client-side web development we need to appeal –among other subjects– to geometry and trigonometry in the moment that we require to build applications with a high level of animations and interactivity.
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There is a newer post with a better method to perform a full-text search in JavaScript.
Some time ago, I needed to create a full-text search in JavaScript in a project that I was working on. The requirement was to search the text directly in the DOM modifying it and highlighting the relevant results.
The majority of the scripts on the internet, explain how to search a text inside a string, but many of them focused on verifying if the text is present or not, using for it the indexOf or the search methods of the String object.
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Some years ago I developed a small Action Script 3 class to work with Roman numerals using regular expressions. As ActionScript is barely used on these days, I decided to port this class to JavaScript.
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Many times one needs to fill a string with another string using JavaScript. To achieve this, there is a useful function in PHP called str_pad. This function can pad a string to a certain length with another string. In this way, we are able to achieve that a certain data has always the same length, e.g.:
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