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In web form development, how do you implement "standardized lists" such as prefectures, municipalities, or product categories? If you are writing dozens of lines of <option value="1">... inside your ...

In web application settings screens and search functions, the "select box (dropdown list)" that allows users to choose one option from several is a vital UI component that is both space-saving and ...

Injecting pollutants into the atmosphere to reflect the sun would be extremely dangerous, but the UK is funding field trials Some years ago in the pages of the Guardian, we sounded the alarm about the ...

There are many cases where knowing when an array is a subset of another can be pretty useful - and although usually immediately obvious to the human eye, it can be difficult to evaluate in code. If we ...

When a multiple select field is required, an empty array as value is valid, while the array should contain at least 1 item. The same works for maps/associative arrays ...

This blog post is about comparing the running times of the most commonly used ways to loop through an array in JavaScript in order to see which one is the most efficient. Here is the code used for an ...