1 相同的窗口名字,会在同一个窗口打开。 win = open('','win','');2 或者,先判断是否已经关闭var win = null;
if(win != null){
if(!win.closed) win.close();
}
win = open('','win','');
if(win != null){
if(!win.closed) win.close();
}
win = open('','win','');
var win=window.open('目标路径','onlyone(此处放置打开窗口的名称)','窗口参数');
用不着关闭,这样老窗口会自动被新窗口代替。
要让它获取焦点在window.open后面加上win.focus();