1//https://stackoverflow.com/questions/6542413/bind-enter-key-to-specific-button-on-page
2//upvote them on stackoverflow
3//jquery------------------------------------------------------
4//answer by Chris Laplante  
5$(document).keypress(function(e){
6    if (e.which == 13){
7        $("#button").click();
8    }
9});
10
11//pure javascript--------------------------------------------
12//answer by Alexander Kim
13window.addEventListener('keyup', function(event) {
14  if (event.keyCode === 13) {
15    alert('enter was pressed!');
16  }
17});
18
19//https://www.w3schools.com/howto/howto_js_trigger_button_enter.asp
20// Get the input field
21var input = document.getElementById("myInput");
22// Execute a function when the user releases a key on the keyboard
23input.addEventListener("keyup", function(event) {
24  // Number 13 is the "Enter" key on the keyboard
25  if (event.keyCode === 13) {
26    // Cancel the default action, if needed
27    event.preventDefault();
28    // Trigger the button element with a click
29    document.getElementById("myBtn").click();
30  }
31});