每次单击 angular 按钮时，如何关闭已打开的窗口，然后打开一个新窗口？

Question

I want to open a window using window.open(). but i have to make sure that if that same window has already opened previously , i have to first close that window then i have to open a new one .

Answer 1

try this code

<button onclick="openNewWindow()">Open New Window</button>

var popup_window;
function openNewWindow(){
  if(popup_window != undefined){
      popup_window.close();
  }
  popup_window = window.open("");
}

Answer 2

Try following code

let openedWindow;
let url = "www.example.com"
function openWindow() {
  if(openedWindow) {
     openedWindow.close();
  }
  openedWindow = window.open(url);
}

NOTE : The Window.close() method can only be called on windows that were opened by a script using the Window.open() method. If the window was not opened by a script, an error similar to this one appears in the console:

Scripts may not close windows that were not opened by script.

Check MDN web docs