حذف همه contact در تلگرام

I have a short way that will delete all of your telegram contacts at once:

1- you must sign in to your account with web version of Telegram: 

2- open contacts from menu and then scroll it to end of your contacts (in order to load them all)

3- click "Edit" On the top bar of contacts window.

4- Open Console by (right click on the page > Inspect element > console tab) for Mozilla Firefox and something like this in other browsers.

5- type this jquery code in Console and then press enter to run: $('.contacts_modal_contact').click();

wait! wait until all of your contacts being selected. Your browser may become "not responsible" during this step. if your browser ask you to continue or stop script, you should choose "continue" running script.

6- press DELETE button at the bottom of contacts window.

now wait again. it will DELETE all contacts that have been selected.