基于Jquery实现键盘按键监听_jquery
程序员文章站
2022-03-31 11:28:02
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从NETTUTS看到的文章,效果很不错,有点类似于Flash做出来的效果,demo在这里 ,原文 对实现步骤讲得很清楚,我就不多提了,实现效果的逻辑比较简单,也就是slideDown()方法,
jquery slideDown()方法,实现滑动效果。
// 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");
}
});
jquery slideDown()方法,实现滑动效果。
复制代码 代码如下:
// 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");
});
});
}
而对键盘按键的监听是用的keypress()方法,其实也没什么难度,不过我们很少在页面上使用按键监听,这个例子比较新奇,值得我们参考,如有必要时,可以在项目里用用。
复制代码 代码如下:
$(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");
}
});