Question

Generate the regular expression to match blank lines

(a) / */

(b) /bl

(c) /^?/

(d) /^(dollarSign)/

Answer 1

Correct answer is (d) /^$/

The explanation: There are few expressions which provide the utility of matching metacharacters including /^$/ for blank lines,  / */ for matching one or more spaces, /^.*$/ for matching an entire line whatever it is.