Posts Tagged Animated navigation
[jQuery] 利用 jqeury 和 css 建立一個navigation menu
Posted by Chowky in Jquery, Mootools on August 3, 2009
Chowky 一向欣賞這位作者所做的simple and elegent 效果和教學。
Step 1: HTML 都是利用ul 和li
1 2 3 4 5 6 7 8 | <ul id="topnav"> <li><a href="#">Home</a></li> <li><a href="#">Services</a></li> <li><a href="#">Portfolio</a></li> <li><a href="#">Blog</a></li> <li><a href="#">About</a></li> <li><a href="#">Contact</a></li> </ul> |
Step 2. CSS
要留意的是,現在是還未add span 的,span 會在之後用jquery 加上去。

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | ul#topnav { margin: 0; padding: 0; list-style: none; float: left; font-size: 1.1em; } ul#topnav li{ margin: 0; padding: 0; overflow: hidden; /*--Important - Masking out the hover state by default--*/ float: left; height:40px; } ul#topnav a, ul#topnav span { /*--The <a> and <span> share the same properties since the <span> will be a duplicate of the <a> tag--*/ padding: 10px 20px; float: left; text-decoration: none; color: #fff; background: url(a_bg.gif) repeat-x; text-transform: uppercase; clear: both; width: 100%; height: 20px; line-height: 20px; /*--Vertical alignment of text--*/ } ul#topnav a{ /*--This is basically the hover state of navigation--*/ color: #555; background-position: left bottom; } ul#topnav span{ /*--Default state of navigation--*/ background-position: left top; } |
Step 3. 利用jquery製造的animation effect
a). embed jquery 的library
b). 利用jqeury 去製造animation,shift image -40px pixel向上。

$(document).ready(function() {
$("#topnav li").prepend("<span></span>"); //Throws an empty span tag right before the a tag
$("#topnav li").each(function() { //For each list item...
var linkText = $(this).find("a").html(); //Find the text inside of the <a> tag
$(this).find("span").show().html(linkText); //Add the text in the <span> tag
});
$("#topnav li").hover(function() { //On hover...
$(this).find("span").stop().animate({
marginTop: "-40" //Find the <span> tag and move it up 40 pixels
}, 250);
} , function() { //On hover out...
$(this).find("span").stop().animate({
marginTop: "0" //Move the <span> back to its original state (0px)
}, 250);
});
});Source: http://www.sohtanaka.com/web-design/animate-navigation-with-css-jquery/
Demo: http://www.sohtanaka.com/web-design/examples/fancy-navigation/
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