loading...

Javascript实现渐变褪色淡入淡出效果fat.js

发布时间:August 11, 2007 分类:JavaScript

推荐:PHP Extended CHM 中文手册

完美的JavaScript拖拽效果代码

在wordpress的效果代码中有一个fat.js文件,fat也就是The Fade Anything Technique 褪色技术

其作用是可以根据你指定的颜色按照一定的规则显示出渐变的褪色淡入淡出效果,用户ajax的审核评论,审核文章很是好用,而我们需要做的只是给需要效果的元素设置ID和ClassName.简单容易吧

代码如下,作者的官方站点我上不了了,需要的最好下个wordpress去找下里面的js文件

var Fat = {
make_hex : function (r,g,b)
{
r = r.toString(16); if (r.length == 1) r = '0' + r;
g = g.toString(16); if (g.length == 1) g = '0' + g;
b = b.toString(16); if (b.length == 1) b = '0' + b;
return "#" + r + g + b;
},
fade_all : function (dur)
{
var a = document.getElementsByTagName("*");
for (var i = 0; i < a.length; i++)
{
var o = a[i];
var r = /fade-?(\w{3,6})?/.exec(o.className);
if (r)
{
if (!r[1]) r[1] = "";
if (o.id) Fat.fade_element(o.id,null,dur,"#"+r[1]);
}
}
},
fade_element : function (id, fps, duration, from, to)
{
if (!fps) fps = 30;
if (!duration) duration = 3000;
if (!from || from=="#") from = "#FFFF33";
if (!to) to = this.get_bgcolor(id);
var frames = Math.round(fps * (duration / 1000));
var interval = duration / frames;
var delay = interval;
var frame = 0;
if (from.length < 7) from += from.substr(1,3);
if (to.length < 7) to += to.substr(1,3);
var rf = parseInt(from.substr(1,2),16);
var gf = parseInt(from.substr(3,2),16);
var bf = parseInt(from.substr(5,2),16);
var rt = parseInt(to.substr(1,2),16);
var gt = parseInt(to.substr(3,2),16);
var bt = parseInt(to.substr(5,2),16);
var r,g,b,h;
while (frame < frames)
{
r = Math.floor(rf * ((frames-frame)/frames) + rt * (frame/frames));
g = Math.floor(gf * ((frames-frame)/frames) + gt * (frame/frames));
b = Math.floor(bf * ((frames-frame)/frames) + bt * (frame/frames));
h = this.make_hex(r,g,b);
setTimeout("Fat.set_bgcolor('"+id+"','"+h+"')", delay);
frame++;
delay = interval * frame;
}
setTimeout("Fat.set_bgcolor('"+id+"','"+to+"')", delay);
},
set_bgcolor : function (id, c)
{
var o = document.getElementById(id);
o.style.backgroundColor = c;
},
get_bgcolor : function (id)
{
var o = document.getElementById(id);
while(o)
{
var c;
if (window.getComputedStyle) c = window.getComputedStyle(o,null).getPropertyValue("background-color");
if (o.currentStyle) c = o.currentStyle.backgroundColor;
if ((c != "" && c != "transparent") || o.tagName == "BODY") { break; }
o = o.parentNode;
}
if (c == undefined || c == "" || c == "transparent") c = "#FFFFFF";
var rgb = c.match(/rgb\s*\(\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*\)/);
if (rgb) c = this.make_hex(parseInt(rgb[1]),parseInt(rgb[2]),parseInt(rgb[3]));
return c;
}
}
addLoadEvent(function () {
Fat.fade_all();
});

Tags: none


仅有一条评论 »

  1. 菜鸟 菜鸟

    怎么不解释的详细一点呢?再加一个使用说明什么的。

添加新评论 »

captcha
请输入验证码