js仿土豆网带缩略图的焦点图片切换效果实现方法_javascript技巧

本文实例讲述了js仿土豆网带缩略图的焦点图片切换效果实现方法。分享给大家供大家参考。具体实现方法如下：

复制代码 代码如下:

仿土豆网带缩略图的焦点图片切换效果 /* Reset style */ * { margin:0; padding:0; word-break:break-all; } body { background:#FFF; color:#333; font:12px/1.6em Helvetica, Arial, sans-serif; } h1, h2, h3, h4, h5, h6 { font-size:1em; } a { color:#039; text-decoration:none; } a:hover { text-decoration:underline; } ul, li { list-style:none; } fieldset, img { border:none; } em, strong, cite, th { font-style:normal; font-weight:normal; } /* Focus_change style */ #focus_change { position:relative; width:450px; height:295px; overflow:hidden; margin:20px 0 1px 60px; } #focus_change_list { position:absolute; width:1800px; height:295px; } #focus_change_list li { float:left; } #focus_change_list li img { width:450px; height:295px; } .focus_change_opacity { position:absolute; width:450px; height:70px; top:225px; left:0; background:#000; filter:alpha(opacity=50); -moz-opacity:0.5; opacity: 0.5; } #focus_change_btn { position:absolute; width:450px; height:65px; top:225px; left:0; } #focus_change_btn ul { padding-left:5px; } #focus_change_btn li { display:inline; float:left; margin:0 15px; padding-top:12px; } #focus_change_btn li img { width:76px; height:50px; border:2px solid #888; } #focus_change_btn .current { background:url(/uploadfile/200901/1/6C164133877.gif) no-repeat 37px 8px;} #focus_change_btn .current img { border-color:#EEE; } function $(id) { return document.getElementById(id); } function moveElement(elementID,final_x,final_y,interval) { if (!document.getElementById) return false; if (!document.getElementById(elementID)) return false; var elem = document.getElementById(elementID); if (elem.movement) { clearTimeout(elem.movement); } if (!elem.style.left) { elem.style.left = "0px"; } if (!elem.style.top) { elem.style.top = "0px"; } var xpos = parseInt(elem.style.left); var ypos = parseInt(elem.style.top); if (xpos == final_x && ypos == final_y) { return true; } if (xpos var dist = Math.ceil((final_x - xpos)/10); xpos = xpos + dist; } if (xpos > final_x) { var dist = Math.ceil((xpos - final_x)/10); xpos = xpos - dist; } if (ypos var dist = Math.ceil((final_y - ypos)/10); ypos = ypos + dist; } if (ypos > final_y) { var dist = Math.ceil((ypos - final_y)/10); ypos = ypos - dist; } elem.style.left = xpos + "px"; elem.style.top = ypos + "px"; var repeat = "moveElement('"+elementID+"',"+final_x+","+final_y+","+interval+")"; elem.movement = setTimeout(repeat,interval); } function classNormal(){ var focusBtnList = $('focus_change_btn').getElementsByTagName('li'); for(var i=0; i focusBtnList[i].className=''; } } function focusChange() { var focusBtnList = $('focus_change_btn').getElementsByTagName('li'); focusBtnList[0].onmouseover = function() { moveElement('focus_change_list',0,0,5); classNormal() focusBtnList[0].className='current' } focusBtnList[1].onmouseover = function() { moveElement('focus_change_list',-450,0,5); classNormal() focusBtnList[1].className='current' } focusBtnList[2].onmouseover = function() { moveElement('focus_change_list',-900,0,5); classNormal() focusBtnList[2].className='current' } focusBtnList[3].onmouseover = function() { moveElement('focus_change_list',-1350,0,5); classNormal() focusBtnList[3].className='current' } } setInterval('autoFocusChange()', 5000); var atuokey = false; function autoFocusChange() { $('focus_change').onmouseover = function(){atuokey = true} $('focus_change').onmouseout = function(){atuokey = false} if(atuokey) return; var focusBtnList = $('focus_change_btn').getElementsByTagName('li'); for(var i=0; i if (focusBtnList[i].className == 'current') { var currentNum = i; } } if (currentNum==0 ){ moveElement('focus_change_list',-450,0,5); classNormal() focusBtnList[1].className='current' } if (currentNum==1 ){ moveElement('focus_change_list',-900,0,5); classNormal() focusBtnList[2].className='current' } if (currentNum==2 ){ moveElement('focus_change_list',-1350,0,5); classNormal() focusBtnList[3].className='current' } if (currentNum==3 ){ moveElement('focus_change_list',0,0,5); classNormal() focusBtnList[0].className='current' } } window.onload=function(){ focusChange(); }

希望本文所述对大家的javascript程序设计有所帮助。

js仿土豆网带缩略图的焦点图片切换效果实现方法_javascript技巧

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