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Understanding Type Coercion in JavaScript

  • Type coercion in JavaScript refers to the automatic or implicit conversion of one data type to another.
  • JavaScript performs type coercion when trying to make sense of different types being used together, in scenarios like adding a number to a string or using loose equality (==) for comparisons.
  • There are two types of coercion - Implicit Coercion, where JavaScript automatically converts types, and Explicit Coercion, where types are manually converted using functions like Number(), String(), and Boolean().
  • Understanding type coercion is essential to write cleaner code and avoid bugs, with best practices like using strict equality (===) over loose equality (==), converting values explicitly, handling falsy values carefully, and refraining from comparing complex types like arrays or objects directly.

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