写出下面逻辑表达式的结果:
1. "hello" && 88 //88
2. null && 66 //null
3. " " || 88 //" "
4. undefined || true //true
5. !" " //false
6. !8866 //false
1. "hello" && 88 //88
2. null && 66 //null
3. " " || 88 //" "
4. undefined || true //true
5. !" " //false
6. !8866 //false