Comparison operators return a boolean value. Strings are compared letter-by-letter in the “dictionary” order. When values of different types are compared, they get converted to numbers (with the exclusion of a strict equality check). The values null and undefined equal == each other and do not equal any other value. Be careful when using comparisons like > or < with variables that can occasionally be null/undefined. Checking for null/undefined separately is a good idea.
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