Why Is Error Handling Important?
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Catching a runtime error allows you to take action with it, such as logging it to the browser console. This is more gracious than an error leading to a crash and leaving you unsure of how or why it happened.
- Name: The mistake has this name. For instance, a missing variable name will result in the SyntaxError error.
- The message’s body, which provides a written explanation of the mistake, appears here.
- cause: To keep track of the call stack, use this property with custom errors.
- variable names are absent.
- an empty space following a function.
- ” is missing following a condition.
When a software tries to reference a variable that is not available or within its range, reference errors happen.
If a global URI handling function, such as decodeURIComponent(), is used incorrectly, an error will result. The encoding or decoding fails as a result.
This mistake is a representation of several errors rolled into one. When you wish to throw numerous mistakes at once, use it. When all of the promises supplied to Promise.any() reject, for instance, it may raise an AggregateError().
The range of values you can send as parameters is limited for some functions. If you attempt to pass a value that is outside of that range, you will receive this error.
Error Handling With the Try…Catch Block
As a result of the variable’s lack of definition, the programme will crash. The catch block prints this error to the console. The finally block then executes and prints its own message. The getData() function is used in this example, and the programme assigns the output to the data variable. If the data in the try block is empty, the block throws a specific error. This error is caught by the catch block, which logs it to the console.
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Errors Are There to Help
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