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Uncaught TypeError: jQuery.getJSON is not a function

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  • #23800

    I have been following this guide on how to populate the graph with JSON from backend using .getJSON but i keep getting “Uncaught TypeError: $.getJSON is not a function”.

    I´m not necessarily partial to any particular solution since i´m pretty new to JS compared to python, so I might have missed something obvious in my code or perhaps a better solution. The data we will be using will be a pretty small dataset with 12 time and value-pairs. I have been trying different solutions for probably two days so i have likely stared myself blind on this. Really thankful for any tips!

    This is the code we are using:

    $(document).ready(function() {
    		var dataPoints = [];
    		var chart = new CanvasJS.Chart("chartContainer", {
    			animationEnabled: true,
    			theme: "light2",
    			title: {text: "my chart"},
    			axisY: {
    				title: "title",
    				titleFontSize: 20
    			data: [{
    				type: "column",
    				dataPoints: dataPoints
    		function addData(data) {
    			for (var i = 0; i < data.length; i++) {
    					x: (data[i].label),
    					y: data[i].y
    		$.getJSON("http:/localhost:8080/mydata.json", addData);

    Things i have checked:

    1. I have tried changing the $ to jQuery as described in https://api.jquery.com/jQuery.getJSON. This only resulted in error “Uncaught TypeError: jQuery.getJSON is not a function”
    2. I have confirmed the data is reachable in the correct location (http:/localhost:8080/mydata.json)
    3. Data looks more or less identical to the example data

    Data looks like this:

    data = [
    		{"label": 11, "y": 320},
    		{"label": 12, "y": 552},
    		{"label": 13, "y": 342},
    		{"label": 14, "y": 431},
    		{"label": 15, "y": 251},
    		{"date": 16, "y": 445}

    Thanks in advance!



    Kindly make sure you are including jQuery in your project, and not jQuery slim – which excludes AJAX and animation effects modules. Including jQuery instead of slim should work fine in this case. Please refer this to stackoverflow thread for more information.
    Column Chart with JSON Data

    If you are still facing issue, kindly create a sample project reproducing the issue you are facing & share it with us over Google-Drive or Onedrive so that we can look into your code, understand the scenario better and help you out.

    Vishwas R
    Team CanvasJS


    Problem solved!

    I feel so stupid now. I had read that stackoverflow post before i wrote here AND tried with both of the jQuery sources below. The jQuery slim was located at the bottom of my HTML and not at the top where i was working. I´ll let this serve as a lesson to be cautious when trying to save time and reusing HTML from previous projects.


    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
    <script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
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