javascript - Regex to match mostly alphanumeric paths -

i tried creating regular expression verify path names filesystem api write using gridfs.

my current regex ^[a-za-z0-9\-\[\]()$#_./]*$ can fulfill criteria:

• allow a-z, a-z, 0-9, -[]()$#_./

however doesn't meet these additional criteria:

• first character has /
• there mustn't occurrence of multiple / in row.

questions:

• can me fix regex?
• are there possible issues using criteria path names? (did miss important?)

not sure path criteria, regarding regexp, pretty simple:

^\/(?!\/)([a-za-z0-9\-\[\]()$#_.]|(\/(?!\/)))*$ 

\/(?!\/) means slash / not followed slash (?!\/). used twice, once first character, , again 1 of possible matches after first character.