9. Node.js Cheatsheet
This cheat sheet explains each code’s purpose, so you know their function before you put them to work. This includes
Utility, and more.
source: cheat sheet source page
A cheat sheet is a reference guide that provides information about how to use a particular software application or programming language.
A cheat sheet is an excellent resource for anyone who wants to learn a programming language. It provides a clear and concise overview of the syntax, semantics, and basic principles of the language. In addition, it includes code examples and explanations of important operators, functions, and methods. A cheat sheet is an especially valuable resource for beginners, as it can help them quickly grasp the essentials of the language. However, even experienced programmers can benefit from consulting a cheat sheet when they are working with a new or unfamiliar language. Ultimately, a cheat sheet is an essential tool for anyone who wants to learn or use a programming language.
· The toString() method converts an object to a string.
· The toLocaleString() method converts an object to a string, using the locales and options specified.
· The valueOf() method returns the primitive value of an object.
· The hasOwnProperty() method returns a Boolean value indicating whether an object has the specified property as its own property (as opposed to inheriting it).
· The isPrototypeOf() method returns a Boolean value indicating whether an object exists in another object's prototype chain.
· The propertyIsEnumerable() method returns a Boolean value indicating whether the specified property is enumerable.
· The toFixed() method formats a number using fixed-point notation.
· The toExponential() method formats a number using exponential notation.
· The toPrecision() method formats a number to a specified length.
For example, the toLocaleString() method is only supported by objects that have a known locale (such as numbers and dates). In addition, it's important to note that some methods may return different results depending on the browser or runtime environment.
Finally, keep in mind that methods can be chained together. For example, you could use the toString() method to convert an object to a string, and then use the toLowerCase() method to convert the string to lowercase.