7 front-end debugging tools to quickly find bugs (essential for debugging)

Application vulnerabilities are the source of baldness for front-end debuggers. If you've been working on the front end, you know how difficult it is to fix application vulnerabilities.

Especially when using JavaScript, a small error can sometimes take hours to debug. However, vulnerabilities are inevitable across browsers, operating systems, and devices.

There are many tools for bugs, but not every one of them can be called a "bug nightmare". Some tools perform better than others. This article will introduce you to these little helpers for discovering, diagnosing and repairing vulnerabilities.

Web Browser Developer Tools

Any modern web browser comes with powerful tools to help you debug your application. It can be as simple as a console statement using console.log(), a popup window using alert(), or even a debugger statement to pause code execution. These tools are very useful in debugging tasks, especially debugger statements.

You can also use the network inspector or CSS styles inspector to make debugging easier and smoother. You can simply search on Google to learn more about your browser’s developer tools.

CSS Lint

CSS Lint tool can be used not only to verify code, but also to select Errors and warnings to detect. It performs basic syntax checking and applies a set of rules to the code, looking for problematic patterns or signs of inefficiency in the code.

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JSON formatting and verification tool

In unformatted JSON, it is difficult for us to find the syntax In case of errors or incorrect key values, as this is difficult to read. Reading and finding errors in compressed JSON files is more challenging when the JSON file is missing line returns and whitespace.

You need to be able to quickly scan the object and check for errors in formatting or content. If you expand each object and format it manually to fix this problem. This process will take up a lot of your valuable time.

You can use JSON formatting and validation tools to simply insert the compressed JSON and get a correctly formatted version as output. The tool can also validate JSON according to RFC standards.

Postman

Almost all front-end applications send and receive JSON responses and requests. Apps connect to an API that can do many things such as authentication, user data transfer, and even simple things like getting current weather information for your location.

Postman is one of the best JS tools for debugging requests and responses. It also provides software for macOS systems, Windows systems, and Linux systems. It makes it fast and easy to send REST, SOAP and GraphQL requests directly.

Using Postman, you can adjust requests, analyze responses and fix vulnerability issues. It's useful when you're not sure whether the problem is on the front end or the back end.

sentry

Once an app is released, it is available on a variety of devices run. In any software development life cycle, the testing phase is implemented as a standard process. This phase includes unit testing, system testing, integration testing, etc.

However, there is always the possibility that you may overlook a vulnerability and allow it to continue in production. Even after release, you won't be aware of any remaining vulnerabilities without anyone notifying you. End users rarely report vulnerabilities via the provided email. This is where Sentry comes into play.

A cloud-based error logging system like Sentry can help you log error instances even after release. Sentry offers comprehensive solutions covering most available frameworks.

Sentry applicable languages ​​and frameworks

BrowserStack

BrowserStack can help simulate The exact context in which the user encountered the error. A powerful combination of devices, operating systems, and browsers is an absolute must. You can make the most of it by using an error logging tool like Sentry.

When you log an error, you can reproduce the exact scenario by referencing the environment and recreating it in BrowserStack.

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JSHint

This is a static code analysis that detects errors and potential problems in JS code Tools that can help developers find hard-to-find problems.

JSHint scans programs written in JavaScript and reports common errors and potential vulnerabilities, which may be syntax errors, vulnerabilities caused by implicit type conversion, leaked variables or some other problems.

The following is an example function I use to observe the operation of JSHint:

Hurry up and take a notebook to write down these artifacts for dealing with vulnerabilities!

This article is reproduced from: https://blog.csdn.net/lin123_00/article/details/106628193

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