It’s a best practice to write code that’s highly reusable. Here are five common signs that any JavaScript code is high-quality. Measuring JavaScript code quality can vary depending on the best practices and standards a development team chooses to follow. Implementing an automated code checker with the development process, therefore, can dramatically improve the quality and security of JavaScript code without requiring a lot of extra effort by developers. This shift left of security can greatly reduce the risk exposure of applications and lower the cost of cybersecurity at many organizations.
Using automated static analysis, development teams can find and remediate vulnerabilities early on in the development process rather than react to security incidents after deployment.
Application security is another key aspect of checking JavaScript code. While some JavaScript engines do perform just-in-time compilation, this would surface errors much later in the development process.
Scanning tools are particularly useful for JavaScript because it’s an interpreted language, meaning there’s no compile process during development that flags syntax errors before execution. Remember that by default variables are undefined and objects are nullĪvoid using global variables and prioritize local variablesĪvoid confusing the assignment (=) and equality operators (=, =)Ī JavaScript code checker is invaluable for finding and preventing bugs early on in the development process and preventing developers from introducing JavaScript security vulnerabilities. Here are some tips to avoid the logical errors that many developers regularly make when writing JavaScript code: However, JavaScript error checkers look for logic mistakes.
Never declare number, string, or boolean objectsīeware of automatic type conversions in mathematical operationsĪlways end switch statements with a default valueīe sure to close every bracket and parenthesisĪ JavaScript code checker is invaluable for finding and preventing bugs early on in the development process and Logical errors aren’t recognized by the JavaScript interpreter, but they still prevent the application from performing as the developer originally intended. Here are some best practices for avoiding common JavaScript syntax errors:ĭeclare and initialize variables at the top There are a variety of syntax and logical errors, so it’s important to know how to remediate the most common issues that a debugger or code checker may flag.
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