Auto Invite All Friends For Page Like

 

Firefox
1. Copy all the code and open the page and click on invite
2. Press CTRL + SHIFT + K and then paste the code in the console box
3. Minimize browser and wait for few Seconds

Google chrome
1. Copy all the code and open the page and click on invite
2. Press CTRL + SHIFT + J and then paste the code in the console box
3. Minimize browser and wait for few Seconds.

Enjoy :)


CODE 
javascript:var inputs = document.getElementsByClassName('uiButton _1sm'); 
for(var i=0; i<inputs.length;i++) { 
inputs[i].click();
}