javascript - How to execute a js function onload? -


below functional , working code . when copy paste text file testfile.html , open browser works fine.

but want selectcollege function execute right after initviz function

i tried

<body onload="initviz();selectcollege('engineering');"> . . .

but didn't work. how can make selectcollege function execute right after initviz ? 

<!doctype html> <html>  <head>     <title>select marks</title>      <script type="text/javascript"          src="https://public.tableau.com/javascripts/api/tableau-2.min.js"></script>      <script type="text/javascript">         var viz, sheet;          function initviz() {             var containerdiv = document.getelementbyid("vizcontainer"),                 url = "http://public.tableau.com/views/regionalsampleworkbook/college",                 options = {                     "academic year": "",                     hidetabs: true,                     onfirstinteractive: function () {                         sheet = viz.getworkbook().getactivesheet();                     }                 };              viz = new tableau.viz(containerdiv, url, options);         }          function selectcollege(college_name) {             sheet.selectmarksasync("college", college_name, tableau.selectionupdatetype.replace);         }       </script> </head>  <body onload="initviz();">     <div id="vizcontainer"></div>     <br />         <button onclick="selectcollege('engineering');">select value</button>  </body>  </html>

in selectcollege() attempting access sheet before defined in callback function tableau.viz options object, namely onfirstinteractive(). in order solve this, can call function after defining sheet in function:

options = {   ...   onfirstinteractive: function () {     sheet = viz.getworkbook().getactivesheet();     selectcollege('engineering');   } };

and according this forum, onfirstinteractive() called once when instance of tableau.viz first rendered.


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