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#Js convert string to number code
#Js convert string to number plus

If the argument's first character can't start a legal number literal per the syntax above, parseFloat returns NaN.

If it encounters an invalid character, it returns the number represented up to that point, ignoring the invalid character and all characters following it.

parseFloat() picks the longest substring starting from the beginning that generates a valid number literal.

parseFloat() can also parse and return Infinity or -Infinity if the string starts with "Infinity" or "-Infinity" preceded by none or more white spaces.

Leading spaces in the argument are trimmed and ignored.

The e/ E character can only appear once, and only if there is at least one digit before it. The decimal point can only appear once, and only before the e/ E character.

The +/ - signs can only appear strictly at the beginning of the string, or immediately following the e/ E character.

), exponent indicator ( e or E), and the "Infinity" literal.

#Js convert string to number plus

The characters accepted by parseFloat() are plus sign ( +), minus sign ( - U+002D HYPHEN-MINUS), decimal digits ( 0 – 9), decimal point (.The number syntax it accepts can be summarized as: The parseFloat function converts its first argument to a string, parses that string as a decimal number literal, then returns a number or NaN.

#Js convert string to number code

Warning: unreachable code after return statement.Warning: -file- is being assigned a //# sourceMappingURL, but already has one.TypeError: X.prototype.y called on incompatible type.TypeError: setting getter-only property "x".TypeError: Reduce of empty array with no initial value.TypeError: property "x" is non-configurable and can't be deleted.TypeError: invalid assignment to const "x".TypeError: invalid 'instanceof' operand 'x'.TypeError: cannot use 'in' operator to search for 'x' in 'y'.TypeError: can't redefine non-configurable property "x".TypeError: can't delete non-configurable array element.TypeError: can't define property "x": "obj" is not extensible.TypeError: can't convert BigInt to number.TypeError: can't assign to property "x" on "y": not an object.TypeError: "x" is not a non-null object.Synta圎rror: Using to indicate sourceURL pragmas is deprecated.Synta圎rror: unterminated string literal.Synta圎rror: unparenthesized unary expression can't appear on the left-hand side of '**'.Synta圎rror: unlabeled break must be inside loop or switch.Synta圎rror: Unexpected '#' used outside of class body.Synta圎rror: test for equality (=) mistyped as assignment (=)?.Synta圎rror: redeclaration of formal parameter "x".Synta圎rror: missing = in const declaration.Synta圎rror: missing } after property list.Synta圎rror: missing } after function body.Synta圎rror: missing ] after element list.Synta圎rror: missing ) after argument list.Synta圎rror: missing : after property id.Synta圎rror: invalid regular expression flag "x".Synta圎rror: invalid assignment left-hand side.Synta圎rror: identifier starts immediately after numeric literal.Synta圎rror: function statement requires a name.Synta圎rror: for-in loop head declarations may not have initializers.Synta圎rror: continue must be inside loop.Synta圎rror: cannot use `?` unparenthesized within `||` and `&` expressions.Synta圎rror: await is only valid in async functions, async generators and modules.

Synta圎rror: applying the 'delete' operator to an unqualified name is deprecated.Synta圎rror: a declaration in the head of a for-of loop can't have an initializer.Synta圎rror: "x" is a reserved identifier.Synta圎rror: "use strict" not allowed in function with non-simple parameters.Synta圎rror: "0"-prefixed octal literals and octal escape seq.ReferenceError: reference to undefined property "x".ReferenceError: deprecated caller or arguments usage.ReferenceError: can't access lexical declaration 'X' before initialization.ReferenceError: assignment to undeclared variable "x".RangeError: x can't be converted to BigInt because it isn't an integer.RangeError: repeat count must be non-negative.RangeError: repeat count must be less than infinity.RangeError: argument is not a valid code point.Error: Permission denied to access property "x".Enumerability and ownership of properties.