第265页 THE SCREEN OBJECT

window.resizeTo(screen.availWidth, screen.availHeight);

THE HISTORY OBJECT

Because history is a property of window, each browser window, tab, and frame has its own history object relating specifically to that window object. 

数字参数
//go back one page
history.go(-1);
                    
//go forward one page
history.go(1);
                    
//go forward two pages
history.go(2);

字符串参数
//go to nearest wrox.com page
history.go(“wrox.com”);
                    
//go to nearest nczonline.net page
history.go(“nczonline.net”);

back和forward方法
//go back one page
history.back();
                    
//go forward one page
history.forward();

length属性：

if (history.length == 0){
    //this is the first page in the user’s window
}