42
3.14159
2.1e2
3.2E+4
0.1e-5
3i
2j
i
j

----------------------------------------------------

[
	["number", "42"],
	["number", "3.14159"],
	["number", "2.1e2"],
	["number", "3.2E+4"],
	["number", "0.1e-5"],
	["number", "3i"],
	["number", "2j"],
	["number", "i"],
	["number", "j"]
]

----------------------------------------------------

Checks for numbers.