Скачать или смотреть Node.js Object Iteration Techniques: for...in Loop

In Node.js, the for...in statement allows iteration over the enumerable properties of an object. This loop is useful when you want to access all properties of an object, including those inherited through the prototype chain. However, it is essential to filter out inherited properties using the hasOwnProperty method to avoid unexpected behavior. The for...in loop should be used cautiously with arrays, as it iterates over all enumerable properties, not just array indices. Instead, use the for...of loop for arrays. The for...in loop is straightforward and a powerful tool when working with object properties in Node.js.

This Node.js code example demonstrates the use of the for...in loop to iterate over the properties of an object. It shows how to filter out inherited properties using the hasOwnProperty method.

#javascript #nodejs #coding #programming #code