Invite All Friends on An Page Or Event In Facebook

...Follow Below Steps...

Instructions:

1. Click Invite Friends on whatever you are inviting people Page/Event

2. In the dropdown next to the search box, click Search All Friends

3. Scroll ALL the way down until names stop loading (I found it easy to click the first name and then hold down the spacebar or Page Down button)

For Event Copy Paste This Code

javascript:elms=document.getElementsByName("checkableitems[]");for (i=0;i<elms.length;i++){if (elms[i].type="checkbox" )elms[i].click()}

For Pages Copy Paste This Code 

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