Solution to the return value problem of modal dialog box showModalDialog in Chrome_javascript skills

I haven't found a good solution. The temporary solution is to assign the return value to window.opener.ReturnValue in the pop-up window at the same time. In this way, after closing the window, the return value is obtained through the following code:

Copy code The code is as follows:

var val = window.showModalDialog(...);
if(!val)
val= window.ReturnValue;

This way in IE, FF, and Chrome, You can get the return value.