1. let isDone: boolean = false;
    2. console.log(isDone);
    3. let number: number = 100;
    4. console.log(number);
    5. let str: string = '你好';
    6. console.log(str);
    7. //模板字符串
    8. let username: string = `tom`;
    9. let age: number = 37;
    10. let sentence: string = `hello,my name is ${username},i'm  ${age}`;
    11. console.log(sentence);
    12. //数组
    13. let list: number[] = [1, 2, 3];
    14. console.log(list);
    15. let list1: Array<number> = [1, 2, 3, 4];
    16. console.log(list1);
    17. let list2: Array<any> = [1, true, 3, 4, 5];
    18. console.log(list2);
    19. //对象
    20. let obj: object = { a: 1, b: 2 };
    21. console.log(obj);
    23. let aa: any = 'xxxx';
    24. console.log(aa);