jQuery实现html可联动的百分比进度条

background: url("img/stripes.png") 0 0 repeat;
background-color: #FF5400;
}

JS代码：

$(document).ready(function (){
 var w = $('.a-percentage').width();
 var pos_x = $('.a-percentage').offset().left;
 var inti_x = $('.a-percentage').attr('data-x')*4;
 setProgressAndColor(inti_x, w);
 $('.a-percentage').click(function(e) {
 var x = e.originalEvent.x || e.originalEvent.layerX || 0;
 x = x - pos_x;
 if(x > 0 && x < w){
  setProgressAndColor(x, w);
 }
 });
});
function setProgressAndColor(p, width){
 $('.a-percentage-bar').width(p)
 $('.a-percentage-bar').css('background-color',calcColor(p));
 var per = Math.floor(p/4);
 $('.a-percentage-bar').attr('data-x',per);
 $('.b-percentage-bar').width(width-p)
 $('.b-percentage-bar').css('background-color',calcColor(width-p));
 per = 100-per;
 $('.b-percentage-bar').attr('data-x', per);
}
function calcColor(x){
 var R = 255
 var G = 15;
 var tmp = Math.floor(G+x);//取整保证RGB值的准确
 if(tmp <= 255){
 return 'rgb(255,'+tmp+',15)'
 } else {
 R = (R-(tmp-255));
 return 'rgb('+R+',255,15)'
 }
}

用了简单JQuery做支撑，需要引入JQuery看效果。