function - How can I check if a string contains an hexadecimal value in VBScript? -


is there function in vbscript check if string contains valid hexadecimal value?

for example: 

dim x : x = ishexadecimal("2af3") 'x = true  dim y : y = ishexadecimal("x2m3") 'y = false

you use regular expression, others have suggested:

function ishexadecimal(byval v)   set re = new regexp   re.pattern = "^[a-f0-9]+$"   re.ignorecase = true   ishexadecimal = re.test(v) end function

another solution (with little more hack value):

function ishexadecimal(byval v)   on error resume next   dim : = clng("&h" & v)   ishexadecimal = not isempty(i)   on error goto 0 end function

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