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JavaScript - Interview Questions
What are the common Errors in JavaScript ?
The common errors in JavaScript programming are the following : 

Spelling and typing errors.
Missing brackets or quotation marks.
Mismatching quotation marks.
Using single equal sign instead of double equal sign in comparison.
Referencing objects that does not exist.
Using reserved keywords for the variable naming.
Using the wrong type of brackets.
These are the main causes of these errors.

In JavaScript, there are the following three types of errors :

Syntax Error
Runtime Error
Logic Error
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