JavaScript operations can fail due to "type errors" when applied to values with the wrong data type. These errors occur due to mistyped variables, implicit type conversions, or older codebases. To fix them, enable strict mode, use console.log() to check variable values, and carefully read error messages.
JavaScript's dynamic typing system determines variable types at runtime, not during compilation. Types are inferred through type coercion, which can lead to flexible coding but also introduce type-related errors. Being mindful of variable types and using strict equality checks can help avoid issues.
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