JavaScript restricts that only one page of the same website can be opened in the same browser.

Tip: you can modify some code before running

<SCRIPT language="JavaScript">Function openclk (){<!--用来打开一个新的窗口-->Another = open ('http: // www.javascript.com/', 'newwindow ');<!--打开新的窗口-->} Function closeclk () {another. close ();<!--关闭打开的窗口-->}</sCRIPT><FORM><INPUT TYPE="BUTTON" NAME="open" value="打开JavaScript网站" onClick="openclk()"><BR><BR><INPUT TYPE="BUTTON" NAME="close" value="关闭JavaScript网站" onClick="closeclk()"></fORM><!--本案例实现了打开关闭窗口的功能--><!--分别通过函数openclk()和closeclk()实现-->

Tip: you can modify some code before running