I’ve ran into an issue also reported on StackOverflow where I get an “Uncaught TypeError: b[a].render is not a function” error and the chart fails to render.
I fell back to the non-minified code (canvasjs.js) and spotted the issue pretty quickly on line 2406 of the 1.7.0 GA release:
var index = 0;
for (index in plotAreaElements) {
plotAreaElements[index].render();
}
In some cases, it’s desirable to extend the Array prototype for various reasons, and if this has been done, your “for…in” loop will return the name of the extended property as an index value – see fiddle: http://jsfiddle.net/QwZuf/298/ – and return the error.
See here for a discussion about why “for…in” is risky for array iteration.
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