Tutorial: Writing your first Meteor application - Sending messages

client.html

<template name="input">
  <p>Message: <input type="text" id="message"></p>
</template>

client.js

Template.input.events = {
  'keydown input#message' : function (event) {
    if (event.which == 13) { // 13 is the enter key event
      var name = 'Anonymous';
      var message = document.getElementById('message');

      if (message.value != '') {
        Messages.insert({
          name: name,
          message: message.value,
          time: Date.now(),
        });

        document.getElementById('message').value = '';
        message.value = '';
      }
    }
  }
}