问如何在jquery ajax中调用thingspeak

EN

<script type="text/javascript">
    $(document).ready(function() {

     var response;
    $.ajax({
      url: 'https://api.thingspeak.com/channels/channelid/fields/field1/last?api_key=key',
      type: 'GET',
      data: {
        format: 'json'
      },
      success: function(response) {
      response = response.field1;
      },
      error: function() {
        $('#errors').text("There was an error processing your request. Please try again.");
      }
    });

    document.getElementById("field1").innerHTML=response;
});
    </script>

{response = {created_at: "2018-03-28T09:36:48Z", entry_id: 2476, field1: "0}