javascript - Highcharts showing ticks number, instead of date -

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i'm trying create graph json received web api.

i had working, , decided start refactoring. after while noticed xaxis no longer shows dates, instead seems showing ticks. i'm quite inexperienced javascript , more highcharts cannot spot mistake.

high charts showing ticks. http://mortentoudahl.dk/images/highchartsbug.png

the change did making option object, , pass highcharts upon instantiation, according instructions found here: http://www.highcharts.com/docs/getting-started/how-to-set-options when compare code last code block in link, seems same, except options object.

var pm10 = [];  var pm25 = [];      var options = {    chart: {      zoomtype: 'x',      renderto: 'container'    },    title: {      text: "compounds in air @ hcab"    },    subtitle: {      text: document.ontouchstart === undefined ? 'click , drag in plot area zoom in' : "pinch chart zoom in"    },    xaxix: {      type: 'datetime'    },    yaxis: {      title: {        text: 'µg/m³'      }    },    series: [{      name: 'particles less 2.5 µm',      data: pm25,      pointstart: date.utc(2016, 5, 8),      pointinterval: 86400 * 1000 // 1 day    }, {      name: 'particles less 10 µm',      data: pm10,      pointstart: date.utc(2016, 5, 8),      pointinterval: 86400 * 1000 // 1 day    }]  };    function reverseandsetarrays(data) {    $.each(data.reverse(), function(key, value) {      if ("pm10b" in value) {        pm10.push(value["pm10b"]);      };      if (!("pm10b" in value)) {        pm10.push(null);      };      if ("pm25b" in value) {        pm25.push(value["pm25b"]);      };      if (!("pm25b" in value)) {        pm25.push(null);      };    });  };    var url = "super secret url";  $.getjson(url, function(data) {    reverseandsetarrays(data);    var chart = new highcharts.chart(options);  });
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>  <script src="//code.highcharts.com/highcharts.js"></script>    <div id="container"></div>

the following configuration in options object incorrect:

 xaxix: {     type: 'datetime'  }

it should be:

 xaxis: {     type: 'datetime'  }

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