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[Question post] mui. openWindow + Custom Event listening allows alert () to be executed twice, mui. alert

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[Question post] mui. openWindow + Custom Event listening allows alert () to be executed twice, mui. alert

 

 

The Alert function is executed twice.


There are two pages in total: index.html and detail.html,

Detail.html sets the Custom Event listener (newsId) for the button to trigger alert.

Click "newsid" on index.html to open the detail.html page.

 

Then I have two questions:

1. Is the above mentioned alert executed twice?

2. Sometimes clicking a button does not have any operations. It is possible that the document has not been loaded. Is there any solution?

The Code is as follows:

// ---Index.html <body> 

 


 


// ---Detail.html <body> 

　　


 


------ Waiting for solution --------

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