Is it a bug in Ecmascript - /\S/.test(null) returns true?

Question

Both in Actionscript3 and Javascript these statements give the same result:

/\\S/.test(null) => true  
/null/.test(null) => true  
/m/.test(null) =>         


        

Answer 1

null is an object, and when testing against objects (non-string), its first converted to string, then its giving you that result.

You could try with /Number/.test(Number) or /String/.test(String), which would return true too.

Probably String(null) is being called, which is 'null'

String(Number) will give

function Number() {
    [native code]
}

and /function Number/.test(Number) return true too