基于Jquery实现键盘按键监听

// shows a given element and hides all others 
function showViaKeypress(element_id) 
{ 
    $(".container").css("display","none"); 
    $(element_id).slideDown("slow"); 
} 

// shows proper DIV depending on link 'href' 
function showViaLink(array) 
{ 
    array.each(function(i) 
    {    
        $(this).click(function() 
        { 
            var target = $(this).attr("href"); 
            $(".container").css("display","none"); 
            $(target).slideDown("slow"); 
        }); 
    }); 
} 

$(document).keypress(function(e) 
    { 
        switch(e.which) 
        { 
            // user presses the "a" 
            case 97:    showViaKeypress("#home"); 
                        break;   

            // user presses the "s" key 
            case 115:   showViaKeypress("#about"); 
                        break; 

            // user presses the "d" key 
            case 100:   showViaKeypress("#contact"); 
                        break; 

            // user presses the "f" key 
            case 102:   showViaKeypress("#awards"); 
                        break; 

            // user presses the "g" key  
            case 103:   showViaKeypress("#links"); 
        } 
    });