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PODygraph code crashes on IE8
 

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  1. PODygraph code crashes on IE8
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    <p>My dygraph code does not work on IE8. The Console shows this error:</p> <pre><code>SCRIPT5009: 'CanvasRenderingContext2D' is undefined dygraph-combined.js, line 2 character 13300 </code></pre> <p>This is the line that crashes in "dygraph-combined.js":</p> <pre><code>CanvasRenderingContext2D.prototype.installPattern=function(e){if ... </code></pre> <p>The graph is correctly displayed on IE9 and IE7, using the exact same code.</p> <p>None of the possible solutions that I have researched have worked yet (many of them being just "include excanvas.js").</p> <p><strong>Edit1:</strong> after David Kiger's feedback, I have tried formatting the header exactly as required, but it still does not work. I have also removed Yii's bootstrap to isolate the problem. This is the exact code:</p> <pre><code>&lt;!-- DOCTYPE html --&gt; &lt;HTML&gt;&lt;HEAD&gt; &lt;META content="IE=EmulateIE7; IE=EmulateIE9;" http-equiv=X-UA-Compatible&gt; &lt;META content="text/html; charset=utf-8" http-equiv=Content-Type&gt; &lt;SCRIPT type=text/javascript src="/js/dygraph/excanvas.js"&gt;&lt;/SCRIPT&gt; &lt;SCRIPT type=text/javascript src="/fonto/js/dygraph/dygraph-combined.js"&gt;&lt;/SCRIPT&gt; &lt;/HEAD&gt; </code></pre> <p>Commenting this line in excanvas.js did not work either:</p> <pre><code>//el.style.overflow = 'hidden'; </code></pre> <p><strong>Edit2:</strong> SOLVED! </p> <p>So I had to combine both solutions:</p> <p>Format code for IE...</p> <pre><code>&lt;!DOCTYPE html&gt; &lt;html&gt; &lt;head&gt; &lt;meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7; IE=EmulateIE9;"&gt; </code></pre> <p>...AND commenting the line in excanvas.js</p> <pre><code>//el.style.overflow = 'hidden'; </code></pre> <p>The order is also very important:</p> <ul> <li><p>First excanvas.js</p></li> <li><p>Then dygraph-combined.js</p></li> </ul> <p>Thank you so much for your feedback.</p>
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    1. PTQuestion
    1. USXavier Peña
    1. USXavier Peña
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    1. CODid you read the all of the details at http://dygraphs.com/#ie? It's more than just including excanvas for IE8. See https://groups.google.com/forum/?fromgroups=#!topic/dygraphs-users/xgcJ4EvH_l8.
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      1. PODygraph code crashes on IE8
      1. USDavid Kiger
    2. COThanks, this is indeed a very instructive post from Dan. Nevertheless I have tried 2 of these 3 solutions and I still could not make the code work. And the 3rd one (changing to FlashCanvas) does not seem like a good idea after reading the feedback comments.
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      1. PODygraph code crashes on IE8
      1. USXavier Peña
 

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