find best solution for concatenate 4 strings

find best solution for concatenate 4 strings

Compare the new ES6 spread operator with the traditional concat() method and push

Compare the new ES6 spread operator with the traditional concat() method and push

compare spread, object.assign, JSON methods and lodash deepClone

performance comparison of ways to find if an array contains a value

Compare loop performance

Compare loop performance

spread operator vs Array.from

Compare methods for testing string's beggining character.