Debugging is a process of testing and finding errors and reducing their occurrence in the future.
>> This requires that you understand the context of the implementation of your program to discover errors in it
The console is a great helper in minimizing the area where the error is, so that you can try to find the exact error.
JavaScript contains 7 different types of errors. Each creates its own error object, which can tell you its line number and provide a description of the error.
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RangeError:This is thrown when a number is outside an allowable range of values.
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ReferenceError:This error is thrown when a reference made to a variable/item is broken. That is the variable/item doesn’t exist.
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SyntaxError:This is the most common error we encounter. This error occurs when we type code that the JS engine can understand.
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TypeError:TypeError is used to indicate an unsuccessful operation when none of the other NativeError objects are an appropriate indication of the failure cause.
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URIError:This indicates that one of the global URI handling functions was used in a way that is incompatible with its definition.
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EvalError:This is used to identify errors when using the global eval() function.
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InternalError:This error occurs internally in the JS engine, especially when it has too much data to handle and the stack grows way over its critical limit.
>> If you know you might get an error, you can safely handle it with try, catch, and finally statements. Use it to provide users with helpful feedback.
