The problem of passing parameters from the subpage opened by window.open() to the main page

<!--Code of main page--> 
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script type="text/javascript" src="../../commonJS/jquery.js"></script>
 <script>
 
</script>
</head>
<body>  
<div style="width:140px; height:60px; position:relative;display:inline-block;background-color: red; margin-right:20px;display:inline-block;cursor: pointer;" id="addMatchSchedule"> </div>
  </body>
</html>
<script>
	
	$("#addMatchSchedule").click(function()
		{alert("a");
	    	window.open('child.html',"新增","width=500,height=480,screenX=400,screenY=100");
		}
	);
	
	//The function called by the sub page
	window.BBBB = function(){
		
		alert(112);
	}
	  
</script>

<!--Subpage--> 
<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<script src="../../commonJS/jquery.js"></script>
	<body>
		
		<a class="btn btn-small btn-info" onclick="addSchduleItem();" title="确定" >确定</a>     
		 
	</body>
</html>
<script>
	
	// OK to close the page
     function addSchduleItem()
    {
        
      if (window.opener != null && !window.opener.closed) {
          window.opener.BBBB();//Call the function of the main page
      }
      window.close(true);　
    }
    
</script>

Summarize the idea in one sentence: open the child window in the parent window, and call the method of the parent window in the child window

Core method: window.open() (the method is introduced at the end of this article)

Core concept: window.opener (the method is introduced at the end of this article)

Introduction to window.open() (take a specific situation as an example):

　　window.open('page.html', 'newwindow', 'height=100, width=400, top=0, left=0, toolbar=no, menubar=no, scrollbars=no, resizable=no, location=no , status=no') //This sentence is written as a line of code

Parameter explanation:
window.open is the command to pop up a new window;
　　'page.html' is the file name of the pop-up window;
　　'newwindow' is the name of the pop-up window (not the file name), optional, and can be replaced with empty '';
　　height=100 window height ;
　　width=400 window width;
　　top=0 the pixel value of the window from the top of the screen;
　　left=0 the pixel value of the window from the left side of the screen;
　　toolbar=no whether to display the toolbar, yes to display;
　　menubar, scrollbars represent the menu bar and scroll bar.
　　resizable=no is allowed to change the size of the window, yes is allowed;
　　location=no is whether the address bar is displayed, yes is allowed;
　　status=no is whether the information in the status bar is displayed (usually the file has been opened), yes is allowed;

Introduction to window.opener

window.opener is actually the parent form of the child form opened through window.open