form-values.js

// jQuery-free form values
// Should work in IE9+

var frm = document.querySelector('form'); // Must return containing form

var valueHash = Object.keys(frm.elements).slice(frm.elements.length + 1).reduce(function(a,key){
  var elm = frm.elements[key];
  if(elm.type !== "checkbox" || elm.type == "checkbox" && elm.checked !== false) {
    a[key] = elm.value;
  }
  return a;
},{})