Created
July 9, 2013 15:51
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Using Chart.js, Knockout.js, and jQuery for a chart with dynamic data
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <script src="js/jquery-1.9.1.js"></script> | |
| <script src="js/knockout-2.1.0.js"></script> | |
| <script src="js/Chart.js"></script> | |
| </head> | |
| <body> | |
| <div> | |
| <canvas id="canvas" height="450" width="600"></canvas> | |
| </div> | |
| <div> | |
| <button data-bind="click: function(){ loadDataset(1) }">Dataset 1</button> | |
| <button data-bind="click: function(){ loadDataset(2) }">Dataset 2</button> | |
| </div> | |
| <script type="text/javascript"> | |
| function MainViewModel(data) { | |
| var self = this; | |
| var ctx = $("#canvas").get(0).getContext("2d"); | |
| self.lineChartData = ko.observable(); | |
| self.loadDataset = function(id) { | |
| $.get("/data/"+id, function(data) { | |
| self.lineChartData(data); | |
| var myLine = new Chart(ctx).Line( vm.lineChartData() ); | |
| }); | |
| } | |
| } | |
| var vm = new MainViewModel(); | |
| ko.applyBindings(vm); | |
| vm.loadDataset(1); | |
| </script> | |
| </body> | |
| </html> |
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| app.get('/data/:id', function(req, res) { | |
| var data; | |
| if(req.params.id==1) { | |
| data = { | |
| labels : ["January","February","March","April","May","June"], | |
| datasets : [ | |
| { | |
| fillColor : "rgba(220,220,220,0.5)", | |
| strokeColor : "rgba(220,220,220,1)", | |
| pointColor : "rgba(220,220,220,1)", | |
| pointStrokeColor : "#fff", | |
| data : [65,59,90,81,16,51] | |
| } | |
| ] | |
| }; | |
| }else{ | |
| data = { | |
| labels : ["July","August","September","October","November","December"], | |
| datasets : [ | |
| { | |
| fillColor : "rgba(151,187,205,0.5)", | |
| strokeColor : "rgba(151,187,205,1)", | |
| pointColor : "rgba(151,187,205,1)", | |
| pointStrokeColor : "#fff", | |
| data : [28,48,40,19,96,27] | |
| } | |
| ] | |
| }; | |
| } | |
| res.send( data ); | |
| }); |
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Can You please run this code in jsfiddle ?? I'm getting some error ...