If you have so many friend request on Facebook like more than 200+ or 300+ and doesn't want to click hundreds of time to accept them . Here is the Trick to do so...
Step by Step process with screenshot
Login to Facebook.com in Google Chrome or Mozilla Firefox
Now open the page www.facebook.com/reqs.php
Open all friend request by clicking on "Show more" and open all request in one page.
Copy this code
If you are using Google chrome than press Ctrl+Shift+j . and Click at Console tab. For more info See video
If you are using Mozilla Firefox than press Ctrl+Shift+k
Press Ctrl+v to Paste the code in console and Enter
Wait for a minute all friend requests are accepted
Comment you done and follow the blog
See the YOUTUBE video for more detail
Other Related post.
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