逻辑运算符练习

  <script>
    var num = 7;
    var str = "我爱你~中国~";

    console.log(num > 5 && str.length >= num); //true

    console.log(num < 5 && str.length >= num); //false

    console.log(!(num < 10)); //false

    console.log(!(num < 10 || str.length == num)); //false
  script>