invites everybody who shows up on your search page

linkedIn-invite-all.js

function inviteAll(i, clickTime, loadTime) {
  i = (i !== undefined) ? i : 100; // how many people you like to add ?
  clickTime = clickTime||350; // how quick can a human click ?
  loadTime = loadTime||1000; // wait till next page is loaded
  if (i<=0) return;
  var invite = document.
    querySelector('a[href^="/people/invite"]:not(.invite-sent)');
    // check if there a people to invite
  if (invite) {
    invite.click();
  } else {
    // check if there is a next-page button
    var next = document.querySelector('li.next a.page-link');
    if (!next) { return; }
    next.click();
  }
  var timeout = Math.random() * 200   // randomize to fake a real user
    + (invite) ? clickTime : loadTime; // wait for data or next invite
  // recurse
  setTimeout( inviteAll.bind(
    this, i-1, clickTime, loadTime
  ) , timeout);
}