javascript - Issues setting a value to a select box on the onload -

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While loading the page, I am having trouble determining a value in a select box. On I download I can change the URL I parsed for it and after that I have to set the value from the URL in the specific selection box. The problem occurs when I try to set the value using dijit: 

  dijit.byId ("assettypselect"). Set ('value', queryObject.assettypeselect);   
 An error occurs because the dijit library is not loaded yet. I have used dojo.addOnLoad and dojo, but none of those works  
 Thank you for your time!  
  
  
  
 
 
 Based on the limited information provided, a possible solution is to wait for the  window  load  to ignore the event if  stills  still If the  is undefined  then take a look at your console and make sure that the external / internal library is being requested properly except if the  dijit  loads the AMD style Has been, so sure That you have. Set ('value', queryObject.assettypeselect);}, false);   
 
 Locks the event load at the end of the document loading process. At this point, all the items in the document are in the DOM, and all images, scripts, links and sub-frames have been loaded.

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