Sometimes, in JavaScript, you may need to check if a variable has already been declared in the current page. If you are using, in fact, a variable not declared or initialized (declared in a transpare

Working with Google Maps API, we might have the need to act on the visibility of a map. In this case, it is crucial to consider the existence of a bug (described here). In fact, modifying the attribut

The behavior of the JavaScript replace function might be misunderstood by an inexperienced developer. Differently from what is expected, it replaces just the first occurrence of a substring. var stri

The placeholder attribute is surely one of the most interesting news under the profile of the user experience. As we can read in the recommendations: User agents should present this hint to the user,

Web pages optimization is a subject of topical interest. Among the techniques we can use to improve the performance of our pages, it is very important to keep under a certain limit the number of DOM e