Unable to Get Event Listener to Trigger on Select Change

Question

I have a view that lets users hover over doc set/project names, and the properties for that project are displayed. This is OOB functionality. When a project is selected, and the edit button is clicked, the edit screen for the project's content
type is displayed. Also, a drop-down (select) for content type is at the top. If you manually change the selected value, it will change the display persenting the data as if it were the new content type. I have tried to change the value of the content
type after the page loads by client code. When I tested this code on the IE console, it worked. When I put the code in a script, the new content type is selected, but I can't get the event listener to fire.
Console code:
var xCT = 'Committee Action - IRB'; // content type to select$("SELECT[title*='Content Type'] option:contains('" + xCT + "')").prop('selected', true); // select valuevar changeAct = $("SELECT[title*='Content Type']").attr('onchange'); // get SP event handlerchangeAct = changeAct.substring(0, changeAct.indexOf("return")); // remove "return false;"eval(changeAct); // execute event handler
When I run the same code in a script, I get this error:
SCRIPT5007: The value of the property 'ChangeContentType' is null or undefined, not a Function object
Any suggestions or enlightenment would be appreciated.

Answer 1

Hi Reetesh,
Thanks for ur reply.I have one master table and child table. I have kept child table in detail disclosure of parent table. When I click on show the child table gets expanded. I want to get the value of one of the columns of parent table. I dont have written any code for child table Implementation .I have just set viewlink for that purpose.
Thanks & Regards,
Sandip