Why not to use console log?
One of the biggest problems with using just console. log is that it can clutter up your code and make it difficult to read. Additionally, it's not very informative on its own.
Untrustworthy Information
You cannot always trust information reported by console. log() because there is simply no standardized behavior about it.
Some downsides: It can clutter your console output. Logs may persist in production environments.
The console. log method is a way for developers to construct code that informs them about what the code is doing in a non-obtrusive way. But this tiny little snippets can do the following to our code base. 🎯 Impact our app performance and increase our computation power and time at production level.
Using console. log() in JavaScript can be considered a best practice for debugging and troubleshooting code. The console. log() method allows developers to log information to the browser's developer console, which can be helpful for identifying and resolving errors in the code.
As previously mentioned, console. log can slow down your application, consume more memory, and increase the computation power needed. Additionally, it can potentially expose critical information about your application, making it vulnerable to security threats.
console. log() is an important function in JavaScript that is used for printing messages to the console. It helps developers debug their code by displaying the output of their program in the console.
It's pretty typical to use console. log to debug problems in a UI. That is if you want to travel through time (and not space). However, if you log an object or array, this can quickly lead to memory leaks, especially in React apps where components can potentially re-render many times.
The log() method writes (logs) a message to the console. The log() method is useful for testing purposes.
It's kinda hard to understand the importance of console. log() when you are first starting out, but in a nutshell the console. log() is used to print something to the console.
What is the difference between log and console log?
Console logs usually output values to the console or command line, whereas logs typically output to a text file on your computer.
log() works solely with JavaScript code and outputs to the console, document. write() directly modifies the HTML document and affects the visible content of the web page. Accordingly, console. log() is mainly used for debugging and logging during development, while document.
log(), console. debug(), and console.info() methods are identical. The only difference is the way the output is visible in the browser console. The browser will define color codes to console method output messages.
Conclusion. Fixing non-compliant logging, and reducing excessive logging can drastically improve performance, reduce processing time, reduce CPU and temporary memory usage and I/O for log file writing.
The print() function is a generic function used to display output in various programming languages, but it is not commonly used in JavaScript. Additionally, console. log() has more functionalities, such as logging multiple arguments, objects, and even tables, which print() does not support.
So, console. log function always returns undefined therefore it is a pure function.
You could also use regex to delete all the console. log() calls in your code if they're no longer required. Any decent IDE will allow you to search and replace these across an entire project, and allow you to preview the matches before committing the change. This will override console.
A common cause of memory leaks is when an application allocates memory but does not free it when it is finished using the memory. Typically memory allocation is done using the malloc function. The memory is freed using the free function.
A memory leak occurs when a process allocates memory from the paged or nonpaged pools, but doesn't free the memory. As a result, these limited pools of memory are depleted over time, causing Windows to slow down. If memory is completely depleted, failures may result.
Physical or permanent damage does not happen from memory leaks. Memory leaks are strictly a software issue, causing performance to slow down among applications within a given system. It should be noted a program taking up a lot of RAM space is not an indicator that memory is leaking.
Why is it important to use logs?
It lets you work backwards through a calculation. It lets you undo exponential effects. Beyond just being an inverse operation, logarithms have a few specific properties that are quite useful in their own right: Logarithms are a convenient way to express large numbers.
Press Ctrl+Shift+J (Windows, Linux) or Command+Option+J (macOS). DevTools opens, with the Console open in the Activity Bar. The webpage has already populated the Console with output. Click the expander triangles in the output results, to expand the data that's output by the above log statements that are in the webpage.
There are various kinds of logs, including event logs, server logs, and system logs (or syslogs). Each log type stores different information, which can be organized systematically or semi-systematically based on its purpose. Web logs contain data regarding traffic to a website, such as IP addresses and URLs.
console. log is a method used to log a message to the Javascript console and is not quite the same as a printf() statement. However there is a function in Javascript very similar to the printf() function in C and that's the print() function.
Console. WriteLine writes to the standard output stream, either in debug or release. Debug. WriteLine writes to the trace listeners in the Listeners collection, but only when running in debug.
References
- https://developer.chrome.com/docs/devtools/console/reference
- https://www.shecodes.io/athena/2368-why-is-console-log-important-in-javascript
- https://en.wikipedia.org/wiki/Memory_leak
- https://eos.com/blog/selective-logging/
- https://www.codecademy.com/forum_questions/505b318b78e591000200e39d
- https://www.linkedin.com/pulse/pure-function-impure-functions-js-akshay-narwadkar
- https://dev.to/drsimplegraffiti/remove-consolelog-from-production-mode-4d8i
- https://stackoverflow.com/questions/7042611/override-console-log-for-production
- https://www.quora.com/What-is-the-best-alternative-for-console-log-in-NodeJS
- https://twm.me/best-practices-for-logging-in-a-node-js-application/
- https://www.pentalog.com/blog/tech-trends/console-log-demystified/
- https://www.geeksforgeeks.org/javascript-console-log-method/
- https://medium.com/swlh/console-log-isnt-in-the-javascript-language-2b0f24d57397
- https://developer.mozilla.org/en-US/docs/Web/JavaScript/Language_overview
- https://developer.chrome.com/docs/devtools/console/log
- https://blog.logrocket.com/keeping-it-simple-with-the-javascript-console/
- https://www.quora.com/What-are-the-advantages-of-using-a-console-log-over-getElementById-in-JavaScript
- https://www.reddit.com/r/learnprogramming/comments/vpu5ks/whats_the_difference_between_using_a_console_log/
- https://learn.microsoft.com/en-us/microsoft-edge/devtools-guide-chromium/console/console-filters
- https://www.quora.com/What-is-the-difference-between-print-and-console-log-in-JavaScript
- https://www.w3schools.com/jsref/met_console_log.asp
- https://learn.microsoft.com/en-us/windows-hardware/drivers/debugger/finding-a-memory-leak
- https://tooabstractive.com/how-to-tech/difference-between-console.log-and-document.write-in-javascript/
- https://stackoverflow.com/questions/51449019/what-is-the-difference-between-console-log-and-console-error-in-js
- https://hackernoon.com/why-javascript-developers-should-use-the-debugger-instead-of-consolelog
- https://www.atatus.com/blog/how-to-identify-memory-leaks/
- https://www.quora.com/How-bad-is-a-memory-leak-for-a-computer
- https://www.omicsonline.org/open-access/environmental-effects-of-logging-include-deforestation-116462.html
- https://www.linkedin.com/pulse/say-goodbye-console-clutter-how-disable-consolelog-cleaner-chughtai
- https://www.codecademy.com/forum_questions/4f1e7c441c23480001003337
- https://www.manageengine.com/products/eventlog/cisco/how-to/how-to-show-cisco-switch-logs.html
- https://techblog.cisco.com/blog/logging-impact-on-application-performance
- https://developer.mozilla.org/en-US/docs/Web/API/console/log_static
- https://www.educative.io/blog/what-is-a-memory-leak
- https://www.frontendundefined.com/posts/react-issues/double-console-react-18/
- https://www.quora.com/Will-upgrading-RAM-memory-in-my-laptop-fix-memory-leak-errors
- https://www.shecodes.io/athena/9472-using-console-log-for-debugging-in-javascript
- https://medium.com/codex/memory-leaks-in-programming-d1b0447b9a73
- https://forums.meteor.com/t/console-log-something-useful-performance/44487
- https://www.codecademy.com/forum_questions/502c2f6307533a000200be1c
- https://lightrun.com/answers/winstonjs-winston-memory-leak-when-logging-large-amount-of-logs
- https://learn.microsoft.com/en-us/microsoft-edge/devtools-guide-chromium/console/console-log
- https://stackoverflow.com/questions/15462122/assign-console-log-value-to-a-variable
- https://forum.freecodecamp.org/t/what-is-the-difference-b-n-console-log-and-return/504161
- https://stackoverflow.com/questions/3012822/whats-the-difference-between-console-writeline-vs-debug-writeline
- https://www.techlicious.com/tip/the-power-of-restarting-why-turning-devices-off-and-on-fixes-them/
- https://www.shecodes.io/athena/6609-what-does-console-log-mean-in-javascript
- https://www.syncfusion.com/blogs/post/11-console-methods-in-javascript-for-effective-debugging.aspx
- https://www.quora.com/Is-it-considered-best-practice-to-use-console-log-in-JavaScript
- https://www.quora.com/Are-memory-leaks-permanent
- https://stackoverflow.com/questions/60383852/should-i-use-console-error-or-throw-new-error
- https://tooabstractive.com/how-to-tech/difference-between-console.log-and-return-in-javascript/
- https://www.ibm.com/support/pages/memory-leaks-common-causes-and-ways-diagnose-using-onstat-commands
- https://cloudlytics.com/python-logging-basic-what-you-need-to-know/
- https://forum.freecodecamp.org/t/dont-understand-the-purpose-of-console-log/249230
- https://www.linkedin.com/advice/0/how-do-you-test-monitor-your-code-memory-leaks-production
- https://math.stackexchange.com/questions/16342/what-is-the-point-of-logarithms-how-are-they-used
- https://betterprogramming.pub/please-stop-using-console-log-its-broken-b5d7d396cf15
- https://stackoverflow.com/questions/25377115/what-is-the-difference-between-throw-error-and-console-error
- https://kamrutkar.hashnode.dev/is-consolelog-asynchronous-in-javascript
- https://javascript.plainenglish.io/what-are-pure-functions-in-javascript-easy-topic-with-complex-questions-in-interview-aa4da06a4236
- https://eric-schaefer.com/til/2022/01/27/console-logging-can-lead-to-memory-leaks/
- https://www.shecodes.io/athena/16067-how-to-use-console-log-in-javascript
- https://www.shecodes.io/athena/75384-what-is-console-log-and-how-does-it-work
- https://www.baeldung.com/java-memory-leaks
- https://www.stellarinfo.com/article/memory-leaks-in-Windows.php
- https://medium.com/@xiaweiliang94/why-you-should-think-twice-before-using-console-log-and-tips-for-avoiding-performance-pitfalls-1228efc27360
- https://javascript.info/try-catch
- https://codesweetly.com/side-effect
- https://www.cybrosys.com/blog/what-are-the-console-methods-in-javascript
- https://www.xcitium.com/log-files/
