JavaScript Type Snippets
The JavaScript snippet collection contains a wide variety of ES6 helper functions. It includes helpers for dealing with primitives, arrays and objects, as well as algorithms, DOM manipulation functions and Node.js utilities.
Value is plain object
JavaScript, Type
Checks if the provided value is an object created by the Object constructor.
String is valid JSON
JavaScript, Type
Checks if the provided string is a valid JSON.
Are JavaScript strings immutable?
JavaScript, String
When it comes to immutability, many developers have trouble wrapping their head around JavaScript strings. Yet they're not as complicated as you might expect.
Cast to array
JavaScript, Type
Casts the provided value as an array if it's not one.
Clone RegExp
JavaScript, Type
Clones a regular expression.
Argument coalescing
JavaScript, Type
Returns the first defined, non-null argument.
Value is function
JavaScript, Type
Checks if the given argument is a function.
Value is object-like
JavaScript, Type
Checks if a value is object-like.
Number is primitive
JavaScript, Type
Checks if the passed value is primitive or not.
Value is string
JavaScript, Type
Checks if the given argument is a string. Only works for string primitives.
What's the difference between Object.is() and the triple equals operator in JavaScript?
JavaScript, Object
Object.is()and the triple equals operator (===) can both be used for equality checking in JavaScript, but when should you use each one?Value is boolean
JavaScript, Type
Checks if the given argument is a native boolean element.
Value is number
JavaScript, Type
Checks if the given argument is a number.
Value is symbol
JavaScript, Type
Checks if the given argument is a symbol.
Value is nil
JavaScript, Type
Checks if the specified value is
nullorundefined.