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JavaScript: Scripting language
Web APIs: Programming interfaces
Structuring content with HTML module
Dynamic scripting with JavaScript module
The value to parse, coerced to a string. Leading whitespace in this argument is ignored.
Interaction with BigInt values
parseFloat() does not handle BigInt values. It stops at the n character, and treats the preceding string as a normal integer, with possible loss of precision. If a BigInt value is passed to parseFloat(), it will be conve
Interaction with BigInt values
parseFloat() does not handle BigInt values. It stops at the n character, and treats the preceding string as a normal integer, with possible loss of precision. If a BigInt value is passed to parseFloat(), it will be conve
This page was last modified on Jul 8, 2025 by MDN contributors.