[operator] 1. String concatenation console.log('my' + ' cat');//my cat console.log(`string literals: 1 + 2 = ${1+2}`); //string literals: 1 + 2 = 3 * '' 랑 `` 헷갈리지 말기 (backtick기호.) 2. Numeric operators console.log(1 + 1); // add console.log(1 - 1); // substract console.log(1 / 1); // divide console.log(1 * 1); // multiply console.log(5 % 2); // remainder console.log(2 ** 3); // exponentiation 3. ..