Скачать или смотреть How to Display All Elements of an Array in JavaScript: Overcoming the 100-Element Limit

Discover how to display every element in a JavaScript array without loops or splice() method. Learn to override maxArrayLength for seamless output!
---
This video is based on the question https://stackoverflow.com/q/69817329/ asked by the user 'yetty' ( https://stackoverflow.com/u/17183183/ ) and on the answer https://stackoverflow.com/a/69817355/ provided by the user 'Emel' ( https://stackoverflow.com/u/14271633/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Why displaying array elements capped at 100 in JavaScript and is there a way to display everything without a loop or splice()?

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Understanding the 100-Element Limit in JavaScript Arrays

When working with arrays in JavaScript, you might encounter a limitation when trying to output their contents. Specifically, if you're using console.log() for an array containing many elements, you might see only the first 100 elements followed by a message indicating that there are additional items in the array. This situation can be frustrating, especially for developers wanting to display all elements without using loops or the splice() method.

In this article, we will explore why this limitation exists and how to display all items in an array effectively. We'll particularly focus on a common scenario involving prime numbers and show you how to showcase all those numbers in earnest.

The Issue: Displaying Prime Numbers

Imagine you have a function that returns an array of all prime numbers from 2 to 1000. Here's how that function looks:

[[See Video to Reveal this Text or Code Snippet]]

When you execute console.log(listPrimeNumbers());, your output is cut off at 100 items:

[[See Video to Reveal this Text or Code Snippet]]

This behavior can be attributed to the maxArrayLength directive within the JavaScript console, which limits the number of displayed elements to a specific threshold.

Solution: Displaying All Array Elements

To go beyond this limitation, you can use console.dir() instead of console.log(). The console.dir() method allows you to inspect the properties of an object. For arrays, you can adjust the maxArrayLength property, as shown below:

[[See Video to Reveal this Text or Code Snippet]]

Key Steps to Display All Elements

Change the Method: Use console.dir() instead of console.log(). This change enables a more detailed view of the array.

Override the Directive: Specify the maxArrayLength option with a value of null. By doing so, all items in the array will be displayed without limitation.

Example Implementation

Below is the complete example demonstrating how to implement this solution in your code:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

By understanding the limitations of console.log() and utilizing console.dir() with the maxArrayLength property set to null, you can seamlessly display every element in your JavaScript arrays. This approach eliminates the frustration of truncated outputs, allowing you to view all the results your function provides.

Now you can proudly showcase the entire array of prime numbers or any other array content without the headache of missing items or complex workarounds!