What are some examples of type coercion in JavaScript?
Type coercion in JavaScript is when the language automatically converts one data type to another. For example, if you add a number and a string, JavaScript converts the number to a string.
Can you give me a specific example?
Sure! If you do something like 5 + '5'
, JavaScript converts the number 5 to a string, resulting in '55'.
What happens if I subtract a string from a number?
In that case, JavaScript tries to convert the string to a number. For example, 5 - '2'
results in 3.
Are there any other types of coercion I should know about?
Yes, there are also boolean coercions. For instance, !!''
(an empty string) evaluates to false, while !!'hello'
evaluates to true.
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