Close the page with JavaScript (whether to close the page window without pop-up)

Javascript closes the current window

Window. Close (), but it will prompt "the webpage you are viewing is trying to close the window. Close the window ?", How can I not bring up this prompt?

"If you open this webpage for the first time, window. close () will pop up a prompt, if this page is from another web page window. open () page, window. close () will not prompt;

//Firefox won't be able to implement IE6, IE7, IE8, and chrome. If you click Close browser, a prompt will not pop up.FunctionClosewindow () {window. Opener=Null; Window. Open ('', '_ Self ',''); Window. Close ();}