Google是最好用的搜索工具，但前提是你得会用它

一篇关于Google搜索技巧的帖子，简单直观，

Google is the most powerful tool in the world.

But only if you use it right.

Here are 10 Googling tips that will make you smarter。

1/ Use quotes to force an exact-match search:

“what is javascript”

2/ AND operator will return only results related to both terms:

html AND css

3/ You can use the OR operator to get the results related to one of the search terms：

(javascript OR python) free course

4/ The “-” operator will exclude results that contain a term or phrase:

javascript -css

5/ You can use the (*) wildcards as placeholders, which will be replaced by any word or phrase.

“how to start * in 6 months”

6/ Search inside a single website:

site:http://freecodecamp.org

7/ You can also use a very useful feature that helps to find a specific file type. Super useful!

filetype:pdf learn css

8/ Search for a range of numbers:

ecmascript 2016..2018

9/ Use the `before` operator to return only results before a given date:

javascript before:2020

10/ Use the `after` operator to return only results after a given date:

web development after:2020