<template name="thingform">
<div class="container">
    <div class="row">

        <!-- Project Name Form-->
        <form class="col s6">
            <div class="input-field col s6">
                <input placeholder="{{projectDoc}}" name="tname" type="text" class="validate">
                <label>Thing Name</label>
            </div>

            <button id="yoid" class="btn waves-effect waves-light tbutton" type="submit">
                <i class="material-icons right">Submit</i>
            </button>
        </form>
    </div>
</div>

Template.thingform.helpers({
projectDoc: function() {
    return "Hello";
}
});

Template.thingform.events({
"click .tbutton": function(e) {
    var bid = e.target.id;
    e.preventDefault();
    console.log(bid);
}
});

var bid = $(e.target).prop("id");

var bid = $(e.target).attr("id");

var bid = event.currentTarget.id;

<!-- Project Name Form-->
<form class="col s6">
  <div class="input-field col s6">
      <input placeholder="{{projectDoc}}" name="tname" type="text" class="validate">
      <label>Thing Name</label>
  </div>

  <button id="yoid" class="btn waves-effect waves-light tbutton" type="submit">
      <i class="material-icons right">Submit</i>
  </button>
</form>

"click .tbutton": function(e) {
  var bid = e.currentTarget.id;
  e.preventDefault();
  console.log(bid); // Logs 'yoid'
}