Error in Js and its types
Unveiling JavaScript's Common Errors: A Comprehensive Guide
As one of the most popular programming languages, JavaScript is widely used in web development to create interactive and dynamic websites. However, like any other programming language, JavaScript is prone to errors that can cause unexpected results or even program failures. In this post, we will explore the three most common types of errors in JavaScript.
1.> Syntax Errors:
Syntax errors occur when the code violates the language grammar rules. This type of error is detected by the interpreter or compiler during the compilation stage, and the program cannot run until the syntax error is fixed. A missing semicolon or a mismatched bracket are some examples of syntax errors.
eg: const a ;
2.> Type Errors:
Type errors happen when you try to perform an operation on an object or variable that is not of the expected type. For instance, trying to add a string to a number or calling a method on an undefined variable can result in a type error. These errors occur during the runtime of the program.
eg const a = 5 ; a = 10
3.> Reference Errors:
Reference errors occur when you try to access an undefined variable or an object property that does not exist. These errors are detected during runtime and can cause the program to crash. For instance, if you try to access a variable that has not been declared, you will get a reference error. #javascript