jquery - RegEx for not allow space at starting and allow some special characters in middle -


at present have this

^[^a-za-z0-9\\-\\s]+$

expression allows special characters. want allow these [- .,$% ] characters in middle.

this not allow space & allowed mention special character 

^[a-za-z0-9_@./#&+-\[\]$%]*$

for allowing in between not @ starting

^[^-\s][a-za-z0-9_\s-_@./#&+-\[\]$%]+$

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