Load google charts from external JS file

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Ella Sherilyn Ramos

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Jun 7, 2018, 11:28:57 PM6/7/18
to Google Visualization API
I am having trouble displaying google charts from an external JS script, inline script on my HTML works. 

I called the loader on the <head> of my HTML file.

<head>


<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>



</head>

And then I have an external JS file (app.js) being loaded as well on my HTML file. This is the content. 

$(function() {
  google.charts.load('current', {packages: ['corechart']});
  google.setOnLoadCallback(drawLineChart);


  function drawLineChart(values, labels){
      // Define the chart to be drawn.
    var data = new google.visualization.DataTable();




    var speed = values.speed;
    var soc = values.soc;
    var dataArray = [];


    for (i=0;i<labels.length;i++){
      var tempArray = []
      tempArray.push(new Date(labels[i]))
      tempArray.push(speed[i])
      tempArray.push(soc[i])
      dataArray.push(tempArray)
    }


    console.log(dataArray);
    data.addColumn('datetime', 'Time of Day');
    data.addColumn('number', 'Speed');
    data.addColumn('number', 'SOC');
    data.addRows(dataArray);


    var options  = {
      legend: { position: 'top', maxLines: 3 }
    }


    // Instantiate and draw the chart.
    var chart = new google.visualization.LineChart(document.getElementById("lineChart"));
    console.log("chart: ", chart);
    chart.draw(data, options);
}

});


It gives me this error.

jQuery.Deferred exception: google.setOnLoadCallback is not a function TypeError: google.setOnLoadCallback is not a function

Any idea how to load it properly? 

Thank you. 

  

Daniel LaLiberte

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Jun 8, 2018, 10:11:44 AM6/8/18
to Google Visualization API
You need to change google.setOnLoadCallback to google.charts.setOnLoadCallback.

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Ella Sherilyn Ramos

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Jun 12, 2018, 10:13:28 PM6/12/18
to Google Visualization API
this works, thank you!
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