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[ACCEPTED]-Javascript regular expression match string to start with letter or number-match

Accepted answer
Score: 11

Use:

^[A-Z0-9]

With a case-insensitive modifier:

if(thestring.match(/^[A-Z0-9]/i)) {}

Demo

\pL and 2 \pN are PCRE shortcodes and do not work in 1 Javascript.

Score: 5 
if(/^[a-z0-9]/i.test(thestring)) {
    //do something
}

.test() is much more simple.
It returns just false or 1 true, while .match() resturns null or an array.

More information differences between .test() and .match()

Source: stackoverflow.com

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