dist/vue-inview.js
function (obj, src) {
  var result = false
  var key
  for (key in obj) {
    if (obj.hasOwnProperty(key) && key === src) result = true
  }
  return result
}
function (obj, src) {
  var result = false
  var key
  for (key in obj) {
    if (obj.hasOwnProperty(key) && key === src) result = true
  }
  return result
}
return boolen
- check if key has in object