JavaScript Question:

3. isPangram Write a function called isPangram which returns true if every single lower-cased letter of the English alphabet is used. Every character in the string will be lowercase so you do not need to worry about upper and lower case. isPangram ("sphinx of black quartz, judge my vow"); // true isPangram("the quick brown fox jumps over the lazy dog"); // true isPangram("this does not have all letters"); // false isPangram("this will not work as well"); // false