<button type="button" id="btn">送出</button>
var obj = {
  name: 'Ray'
}
var btnID = document.getElementById('btn');

function fn() {
  console.log(this);
}
btnID.addEventListener('click', fn.bind(obj));

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.