Reply To: Help with Dynamic chart, please !!!

[Sanjoy]

You have to replace the link with your PHP file. I have updated updateChart. Finally your code should look like…..

$(document).ready(function() {

	var chart;
	
	$.getJSON("ratingsdata.php", function(result) {

		chart = new CanvasJS.Chart("chartContainer", {
			title: {
				text: "Product Ratings"
			},

			animationEnabled: true,

			data: [{
					dataPoints: result
				}]
		});

		chart.render();
	});
	
	//Function to render the chart on button click

	var updateChart = function() {

		$.getJSON("selected_product.php", function(result) {

			var data = {
					dataPoints: result
				};
			chart.options.data.push(data);
			chart.render();
		});

	};

	//Function for button click event

	document.getElementById("viewratings").onclick = function() {
		updateChart();
	}

});