javascript - Add a character to the beginning and end of a string -

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i using platform uses javascript-like syntax , allows convert values using regex.

i need add single quote @ beginning , @ end of string, string have 9 characters.

i.e.:

123456789 should converted '123456789'

what expression should use?

you don't need regular expression.

str = "123456789";  str = "'" + str + "'";

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