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jQuery Background Position

jQuery Background Position

Background Effekte bei Buttons

Der hier verwendete Code

<!DOCTYPE HTML> <html lang="en"> <head> <title>jQuery Background Test</title> <style> h2 {clear:both;padding-top:20px;} ul {list-style:none;margin:0;padding:0;} li {float:left;width:100px;margin:0;padding:0;text-align:center;} li a {display:block;padding:5px 10px;height:100%;color:#FFF;text-decoration:none;border-right:1px solid #FFF;} li a {background:url(https://snook.ca/technical/jquery-bg/bg2.jpg) repeat 0 0;} li a:hover, li a:focus, li a:active {background-position:-150px 0;} #a a {background:url(https://snook.ca/technical/jquery-bg/bg.jpg) repeat -20px 35px;} #b a {background:url(https://snook.ca/technical/jquery-bg/bg2.jpg) repeat 0 0;} #c a {background:url(https://snook.ca/technical/jquery-bg/bg3.jpg) repeat 0 0;} #d a {background:url(https://snook.ca/technical/jquery-bg/bg4.jpg) repeat 0 0;} </style> <script src="https://snook.ca/technical/jquery-bg/jquery-1.2.6.min.js"></script> <script> (function($) { $.extend($.fx.step,{ backgroundPosition: function(fx) { if (fx.state === 0 && typeof fx.end == 'string') { var start = $.curCSS(fx.elem,'backgroundPosition'); start = toArray(start); fx.start = [start[0],start[2]]; var end = toArray(fx.end); fx.end = [end[0],end[2]]; fx.unit = [end[1],end[3]]; } var nowPosX = []; nowPosX[0] = ((fx.end[0] - fx.start[0]) * fx.pos) + fx.start[0] + fx.unit[0]; nowPosX[1] = ((fx.end[1] - fx.start[1]) * fx.pos) + fx.start[1] + fx.unit[1]; fx.elem.style.backgroundPosition = nowPosX[0]+' '+nowPosX[1]; function toArray(strg){ strg = strg.replace(/left|top/g,'0px'); strg = strg.replace(/right|bottom/g,'100%'); strg = strg.replace(/([0-9\.]+)(\s|\)|$)/g,"$1px$2"); var res = strg.match(/(-?[0-9\.]+)(px|\%|em|pt)\s(-?[0-9\.]+)(px|\%|em|pt)/); return [parseFloat(res[1],10),res[2],parseFloat(res[3],10),res[4]]; } } }); })(jQuery); </script> <script> $(function(){ $('#a a') .css( {backgroundPosition: "-20px 35px"} ) .mouseover(function(){ $(this).stop().animate({backgroundPosition:"(-20px 94px)"}, {duration:500}) }) .mouseout(function(){ $(this).stop().animate({backgroundPosition:"(40px 35px)"}, {duration:200, complete:function(){ $(this).css({backgroundPosition: "-20px 35px"}) }}) }) $('#b a') .css( {backgroundPosition: "0 0"} ) .mouseover(function(){ $(this).stop().animate({backgroundPosition:"(-150px 0)"}, {duration:500}) }) .mouseout(function(){ $(this).stop().animate({backgroundPosition:"(-300px 0)"}, {duration:200, complete:function(){ $(this).css({backgroundPosition: "0 0"}) }}) }) $('#c a') .css( {backgroundPosition: "0 0"} ) .mouseover(function(){ $(this).stop().animate({backgroundPosition:"(0 -250px)"}, {duration:500}) }) .mouseout(function(){ $(this).stop().animate({backgroundPosition:"(0 0)"}, {duration:500}) }) $('#d a') .css( {backgroundPosition: "0 0"} ) .mouseover(function(){ $(this).stop().animate({backgroundPosition:"(0 -250px)"}, {duration:500}) }) .mouseout(function(){ $(this).stop().animate({backgroundPosition:"(0 0)"}, {duration:500}) }) }); </script> </head> <body> <h1>jQuery Background Position</h1> <h2>Example 0: No Script</h2> <ul id="noscript"> <li><a href="#">Home</a></li> <li><a href="#">About</a></li> <li><a href="#">Contact</a></li> </ul> <h2>Example A: Top down</h2> <ul id="a"> <li><a href="#">Home</a></li> <li><a href="#">About</a></li> <li><a href="#">Contact</a></li> </ul> <h2>Example B: Right left</h2> <ul id="b"> <li><a href="#">Home</a></li> <li><a href="#">About</a></li> <li><a href="#">Contact</a></li> </ul> <h2>Example C: Fade 1-colour</h2> <ul id="c"> <li><a href="#">Home</a></li> <li><a href="#">About</a></li> <li><a href="#">Contact</a></li> </ul> <h2>Example D: Fade 2-colour</h2> <ul id="d"> <li><a href="#">Home</a></li> <li><a href="#">About</a></li> <li><a href="#">Contact</a></li> </ul> </body> </html>