30秒学会 JavaScript 片段 – Assert object keys are valid
Validates all keys in an object match the given keys. Use Object.keys() to get the keys of the given...
Validates all keys in an object match the given keys. Use Object.keys() to get the keys of the given...
Static methods belong to a class and don’t act on its instances. This means that they can’t be calle...
As mentioned in a previous article, JavaScript uses type coercion in Boolean contexts, such as condi...
A singleton is an object-oriented software design pattern which ensures a given class is only ever i...
Data processing often requires transformation of structures to conform to a specific format. A very ...
Sometimes, when working with objects, the shape of the data is not always known. It might also be in...
Array partitioning is often useful when processing data. Conceptually, partitioning an array into tw...
Strict mode can be applied to entire scripts or individual functions by including ‘use strict’ befor...
Creates a new object from the combination of two or more objects. Use Array.prototype.reduce() combi...
The constructor method is a special method of a class for creating and initializing an object of tha...