When working with strings in JavaScript, you may want to check if a given string contains all values from a list of candidates. JavaScript comes with a String#includes(needle) determining whether the string contains the given needle. You can combine the existing method with array methods to check whether …

When working with arrays in JavaScript, a typical task is to determine whether a given values exists in the array. For example, you may want to ensure that a list of objects contains only items with unique names. This tutorial shows you how to determine whether a JavaScript array includes …

Sometimes you want to display the content in the same format as typed in a textarea. For example, a text from a textarea may contain line breaks or empty lines. The white-space CSS property is helpful displaying the text in the same way it’s provided by the user. No …

Sequelize is a Node.js ORM for all SQL databases, like MySQL, MariaDB, PostgreSQL, SQLite, and Microsoft SQL Server. By default, it logs all SQL queries to the console. This is helpful during development, but also noisy because your terminal is flooded with SQL statements. This tutorial shows you how …

Sequelize is a Node.js ORM for all SQL databases, like MySQL, MariaDB, PostgreSQL, SQLite, and Microsoft SQL Server. By default, it logs all SQL queries to the console. This is helpful during development. In production environments, the SQL query logging may become noisy and just fill up your logs. …

Coding for the happy path is pretty simple. Handling the rest is a much harder challenge. A typical example is a check for the existence of some data, like is the client sending valid data or just an empty object? This tutorial shows you how to detect if an object …

JavaScript comes with handy string methods. What’s missing though is a handy method determining whether a given value is of type “String”. Nonetheless, JavaScript provides methods helping you to detect if a given value is a string value. {{outline}} Check if a Value is a String in JavaScript A …

JavaScript comes with handy string methods. It provides useful basics to interact with strings. The standard library has some missing pieces which you can fill yourself by composing helpful utility methods. One of these utilities is a function retrieve the part after a given character in a JavaScript string. This …