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BigInt: large integers without decimal
The type has its own rules for arithmetic and data exchange.
Published22 Oct 2026
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toFixed(): the rounded representation is a string
Formatting does not change the constraints of binary numerical arithmetic.
Published22 Oct 2026
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Number.isFinite(): finite numbers without implicit conversion
The text with digits does not pass the check as a number.
Published22 Oct 2026
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parseFloat(): why a decimal comma is not recognized automatically
Parser is not a localized tool for all language formats.
Published22 Oct 2026
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parseInt(): start of a number, not validate the entire input
The base and the rest of the text have meaning when parsing.
Published22 Oct 2026
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codePointAt(): the code point is not a visible character
The index remains a position in the UTF-16 representation of the string.
Published22 Oct 2026
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normalize(): equivalent text with different Unicode representations
Normalization helps when comparing equivalent sequences.
Published22 Oct 2026
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padStart(): leading zeros to display
Complementary changes the text representation, not the numeric value.
Published22 Oct 2026
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split(): the separator defines the list
Empty parts can also be significant results.
Published22 Oct 2026
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endsWith(): suffix is a text check
The name ending in .pdf does not prove the file format.
Published22 Oct 2026
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startsWith(): check the start of text
The method is sensitive to upper and lower case letters.
Published22 Oct 2026
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Array.from(): a simple array of iterable source
Conversion is convenient when standard massive methods are needed.
Published22 Oct 2026