Look up the follwoing JavaScript String operations. Write in ONE sentence after EACH question about what the function is used for when working Strings in JavaScrpt. String.prototype.indexOf() ...

3a. FIND THE MIDDLE OCCURRENCE OF A CHARACTER IN A PARTICULAR STRING: index1.js 3b. DISPLAY ALL THE WORDS IN A STRING IN ALPHABETICAL ORDER : index2.js 3c. GIVEN A STRINGREMOVE SPACES,SEE IF A ...