30秒学会 JavaScript 片段 – A complete guide to JavaScript typechecking
JavaScript’s dynamic typing is one of its most powerful features. Nonetheless, it’s ofte...
JavaScript’s dynamic typing is one of its most powerful features. Nonetheless, it’s ofte...
Checks if the provided string is a valid JSON. Use JSON.parse() and a try…catch block to check if ...
I have seen many developers – my younger self included – struggle with JavaScript’...
JavaScript doesn’t have a built-in way to check if a value is blank, but it’s easy to cr...
JavaScript uses type coercion (implicit conversion of values from one data type to another) in Boole...
String specifications among programming languages vary, however most languages treat them as referen...
JavaScript ES2020 introduced some new features that help us write cleaner code. Let’s take a q...
JavaScript has three variable declaration statements: var, let and const. The latter two were added ...
Performs a deep comparison between two values to determine if they are equivalent. Check if the two ...
JavaScript provides two operators for typechecking: typeof is used to typecheck for primitive values...