本文实例讲述了JS实现的颜色实时渐变效果。分享给大家供大家参考，具体如下：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" ><head><title>无标题页</title></head><body><div id="div1" style="font-size:36px;">我的闪烁文字 abc123</div><span id="span1"></span><script type="text/javascript">var begin = getRGB('#33FFAA');var end = getRGB('#FF0000');var curColor = getRGB('#33FFAA');var bo = true;var rate = getRate(begin, end);function blink(){ window.setInterval(function(){ curColor.r = getCur(begin.r, end.r, curColor.r, bo, rate.r); curColor.g = getCur(begin.g, end.g, curColor.g, bo, rate.g); curColor.b = getCur(begin.b, end.b, curColor.b, bo, rate.b); document.getElementById('div1').style.color = getColor(curColor); document.getElementById('span1').innerHTML = getColor(curColor); if(curColor.r == begin.r && curColor.g == begin.g && curColor.b == begin.b) { bo = true; } if(curColor.r == end.r && curColor.g == end.g && curColor.b == end.b) { bo = false; } } , 100);}function getCur(beginValue, endValue, curValue, bo, rateValue){ if(beginValue == endValue) { return beginValue; } rateValue = beginValue < endValue ? rateValue : -rateValue; curValue += bo ? rateValue : -rateValue; if(curValue < Math.min(beginValue, endValue)) { curValue = Math.min(beginValue, endValue); } if(curValue > Math.max(beginValue, endValue)) { curValue = Math.max(beginValue, endValue); } return curValue;}function getRate(b, e){ var obj = new Object(); obj.r = Math.abs(b.r - e.r) / 5; obj.g = Math.abs(b.g - e.g) / 5; obj.b = Math.abs(b.b - e.b) / 5; return obj;}function getRGB(color){ var obj = new Object(); obj.r = parseInt(color.substr(1,2), 16); obj.g = parseInt(color.substr(3,2), 16); obj.b = parseInt(color.substr(5,2), 16); return obj;}function getColor(obj){ obj.r = Math.round(obj.r); obj.g = Math.round(obj.g); obj.b = Math.round(obj.b); var color = '#'; color += (obj.r < 16 ? '0':'') + obj.r.toString(16); color += (obj.g < 16 ? '0':'') + obj.g.toString(16); color += (obj.b < 16 ? '0':'') + obj.b.toString(16); return color;}blink();</script></body></html> 
