関連ワード:  javascript get last 3 characters of string    javascript get last 3 chars of string    javascript last 3 characters of string    get last 3 letters of string javascript    javascript get first 3 characters of string    javascript check last 3 characters of string    javascript replace last 3 characters of string    javascript remove last 3 characters of string    javascript get first 3 letters of string  
結果 : javascript get last 3 characters of string