0
123
123e-5
-123e+2
123.456
+123.456e-7
0xFF
-0xFF
+0xFF
Infinity
-Infinity
NaN
----------------------------------------------------
[
["number", "0"],
["number", "123"],
["number", "123e-5"],
["number", "-123e+2"],
["number", "123.456"],
["number", "+123.456e-7"],
["number", "0xFF"],
["number", "-0xFF"],
["number", "+0xFF"],
["number", "Infinity"],
["number", "-Infinity"],
["number", "NaN"]
]
----------------------------------------------------
Checks for numeric literals.