What is the use of debugger keyword in JavaScript ? Last Updated : 23 Jul, 2024 Summarize Comments Improve Suggest changes Share Like Article Like Report Debugging is a very important aspect of programming to determine why a system or application is misbehaving. It is a process of testing and finding errors to reduce bugs from computer programs. In this article, we will learn about the debugger keyword in JavaScript. To know more about debugging check Software Engineering | Debugging.Debugger keyword in JavaScript: The debugger keyword is one of the debugging tools in JavaScript. It is very common to have errors in the program while writing the codes these errors may be logical errors or syntax errors. Debugging is one of the ways to identify the critical as well as small errors that decrease the efficiency of the program. In javascript when the debugger keyword is turned on, It stops the execution of JavaScript code, and if debugging function available it calls the debugging function. Otherwise, it has no effect. Syntax: The general syntax of the debugger keyword. debugger;Example: It will describe the debugger keyword in JavaScript. HTML <!DOCTYPE html> <html> <body> <p id="para"></p> <p> When we turned on the debugger keyword, the code below should stop executing before it executes the third line. </p> <script> let a = 10 * 5; debugger; document.getElementById("para").innerHTML = a; </script> </body> </html> Output: The HTML code is loaded on the web browser with the static content in the HTML but the dynamic change will not appear at first on the web browser because above the DOM function the execution of the script code is stopped when the debugger keyword appears in the script code. The execution of the code will be resumed only when the resume option will be clicked. Comment More infoAdvertise with us Next Article Debugging in JavaScript V vikashgautam11 Follow Improve Article Tags : JavaScript Web Technologies JavaScript-Questions Similar Reads What is the usage of Function.prototype.bind in JavaScript ? Bind method: Using this method, we can bind an object to a common function, so that gives different result when its needed. The bind() method takes an object as an argument and creates a new function. So basically bind function return function. Let's understand when bind method is used. bind the obj 2 min read What is the Call Stack in JavaScript ? In JavaScript, the Call Stack is an essential concept that helps the JavaScript engine keep track of function execution. It plays a vital role in managing the execution order of functions and determining how the JavaScript program handles function calls.How Does the Call Stack Work?JavaScript operat 4 min read What are Some Common Debugging Techniques for JavaScript ? JavaScript development can be tricky, and errors are common. But do not worry! There are ways to find and fix these problems. Some of the common methods to debug JavaScript code are listed below: Table of Content Using console.log()Error Handling (try...catch blocks)Using debugger and developer tool 3 min read Debugging in JavaScript Debugging is the process of testing, finding, and reducing bugs (errors) in computer programs. It involves:Identifying errors (syntax, runtime, or logical errors).Using debugging tools to analyze code execution.Implementing fixes and verifying correctness.Types of Errors in JavaScriptSyntax Errors: 4 min read What is the (function() { } )() construct in JavaScript? If you've ever played around with JavaScript, you might have seen this expression. It's like a strange set of symbols, but it has a special name that is an immediately invoked function expression, or IIFE. In this article, we will understand each element of the expression as well as the functionalit 3 min read JavaScript Profiler Tool in Microsoft Edge Microsoft Edge which is a web browser provides a tool called JavaScript Profiler which is used in identifying and removing bottlenecks in JavaScript code to improve the speed and responsiveness of web applications.For example, Let's assume you are a developer and you have a web application and JavaS 4 min read Like