音乐网站下载地址提取工具源代码

//时钟时针，分针，秒针（长部分与短部分），毫秒针的长度 var MILLISECOND_WIDTH = 10, SECOND_LONG_WIDTH = 30, SECOND_SHORT_WIDTH = 8, MINUTE_WIDTH = 28, HOUR_WIDTH = 22; //时钟中心坐标值 var CENTER_X = 51, CENTER_Y = 51; //毫秒针中心坐标值 var MILLI_CENTER_X = 68, MILLI_CENTER_Y = 68; //时针，分针，秒针，毫秒针的VML线条对象 var vmlHour,vmlMinute,vmlSecond,vmlMillisecond; //根据当前时间画出时针，分针，秒针，毫秒针的位置 function drawLine() { //得到当前的时间 var currTime = new Date(); var hour = currTime.getHours(); var minute = currTime.getMinutes(); var second = currTime.getSeconds(); var msecond = currTime.getMilliseconds(); //由当前时间小时数计算出偏移角度及其X轴Y轴坐标值 var degree = (hour % 12 + minute / 60.0) * (Math.PI * 2 / 12); var x = CENTER_X + HOUR_WIDTH * Math.sin(degree); var y = CENTER_Y - HOUR_WIDTH * Math.cos(degree); vmlHour.from = CENTER_X.toString() + "," + CENTER_Y.toString(); vmlHour.to = x.toString() + "," + y.toString(); //由当前时间分钟数计算出偏移角度及其X轴Y轴坐标值 degree = minute % 60 * (Math.PI * 2 / 60); x = CENTER_X + MINUTE_WIDTH * Math.sin(degree); y = CENTER_Y - MINUTE_WIDTH * Math.cos(degree); vmlMinute.from = CENTER_X.toString() + "," + CENTER_Y.toString(); vmlMinute.to = x.toString() + "," + y.toString(); //由当前时间秒数计算出偏移角度及其长部分与短部分X轴Y轴坐标值 degree = second % 60 * (Math.PI * 2 / 60); var long_x = CENTER_X + SECOND_LONG_WIDTH * Math.sin(degree); var long_y = CENTER_Y - SECOND_LONG_WIDTH * Math.cos(degree); var short_x = CENTER_X - SECOND_SHORT_WIDTH * Math.sin(degree); var short_y = CENTER_Y + SECOND_SHORT_WIDTH * Math.cos(degree); vmlSecond.from = short_x.toString() + "," + short_y.toString(); vmlSecond.to = long_x.toString() + "," + long_y.toString(); //由当前时间毫秒数计算出偏移角度及其X轴Y轴坐标值 degree = msecond / 50 * (Math.PI * 2 / 20); x = MILLI_CENTER_X + MILLISECOND_WIDTH * Math.sin(degree); y = MILLI_CENTER_Y - MILLISECOND_WIDTH * Math.cos(degree); vmlMillisecond.from = MILLI_CENTER_X.toString() + "," + MILLI_CENTER_Y.toString(); vmlMillisecond.to = x.toString() + "," + y.toString(); } function drawClock() { //获取时针，分针，秒针，毫秒针的VML线条对象 vmlHour = document.getElementById("vmlHour"); vmlMinute = document.getElementById("vmlMinute"); vmlSecond = document.getElementById("vmlSecond"); vmlMillisecond = document.getElementById("vmlMillisecond"); window.setInterval(drawLine, 50); }