习题

<script>
  var str = ' sdsdsd '
  console.log(str.trim());
</script>

<script>
  var dog = {
    dName: '可可',
    type: '阿拉斯加犬',
    age: '5岁',
    color: '棕红色',
    call: function() {
      console.log('汪汪叫');
    },
    tail: function() {
      console.log('摇尾巴');
    }
  };
  console.log(dog.dName);
  console.log(dog.type);
  console.log(dog.age);
  console.log(dog.color);
  dog.call();
  dog.tail();
</script>