v8/test/intl/number-format/parse-decimal.js

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var nf = new Intl.NumberFormat(['en'], {style: 'decimal'});

assertEquals(123.43, nf.v8Parse('123.43'));
assertEquals(123, nf.v8Parse('123'));
assertEquals(NaN, nf.v8Parse(NaN));

// a misplaced comma without a decimal point is not tolerated any more.
assertEquals(undefined, nf.v8Parse('123,23'));
assertEquals(12323.456, nf.v8Parse('123,23.456'));
assertEquals(12323.456, nf.v8Parse('0000000123,23.456'));
assertEquals(-12323.456, nf.v8Parse('-123,23.456'));

// Scientific notation gets ignored.
assertEquals(123.456, nf.v8Parse('123.456e-3'));