javascript - Can't get impress.js working -


i tried start impress.js create html/css3 presentations.
unfortunately cannot simplest example working.

<html lang="en"> <head>     <title>impress demo</title> </head> <body>     <div id="impress">         <div id="start">             <p style='width:1000px;font-size:80px;text-align:center'>creating stunning visualizations</p>             <p>impress.js</p>         </div>          <div id="slide2" data-x="-1200" data-y="0">             <p style='width:1000px;font-size:80px;'>first slide moves left right</p>             <p>impress.js</p>         </div>     </div>      <script type="text/javascript" src="../js/impress.js"></script>     <script type="text/javascript">impress().init();</script> </body>

howver, in firefox (tested in chrome) following error in dev console:

empty string passed getelementbyid() @ impress.js:90

any ideas?

every div want step in div#impress should have class="step" added it.

this code should work

<div id="impress">     <div class="step" id="start">         <p style='width:1000px;font-size:80px;text-align:center'>creating stunning visualizations</p>         <p>impress.js</p>     </div>      <div class="step" id="slide2" data-x="-1200" data-y="0">         <p style='width:1000px;font-size:80px;'>first slide moves left right</p>         <p>impress.js</p>     </div> </div>

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