為什么這樣子不對呢？??<script?src="js/digit.js"></script>?是下載老師的??視頻連接地址http://idcbgp.cn/video/2457
<!DOCTYPE?html>
<html>
<head>
<meta?charset="utf8">
<title>asdasd</title>
</head>
<body>
<canvas?id="canvas"?style="border:?1px?solid?#aaa;display:?block;margin:50px?auto;">當(dāng)前瀏覽器不支持HTML5</canvas>
<script?src="js/digit.js"></script>
<script?src="js/countdown.js"></script>
</body>
</html>var?WINDOW_WIDTH?=?1024;
var?WINDOW_HEIGHT?=?768;
var?RADIUS?=?8;
var?MARGIN_TOP?=?60;
var?MARGIN_LEFT?=?30;
const?endTime?=?new?Date("2016/6/7,18:55:10");
var???curShowTimeSeconds?=?0
var?balls?=?[];
const?colors?=?["#33B5E5","#0099CC","#AA66cc","#9933CC","#669900","#FFBB33","#FF8800","#FF4444","#CC0000"]
window.onload?=?function(){
var?canvas?=?document.getElementById('canvas');
var?context=?canvas.getContext('2d');
canvas.width?=?WINDOW_WIDTH;
canvas.height=?WINDOW_HEIGHT;
curShowTimeSeconds?=?getCurrentShowTimeSeconds();
setInterval(
function(){
render(?context?);
update();
}
,
50
);
}
function?getCurrentShowTimeSeconds(){
var?curTime?=?new?Date();
var?ret?=?endTime.getTime()?-?curTime.getTime();
ret?=?Math.round(ret?/?1000)
return?ret?>=?0???ret?:?0;
}
function?update(){
var?nextShowTimeSeconds?=?getCurrentShowTimeSeconds();
var?nextHours?=?parseInt(curShowTimeSeconds?/?3600);
var?nextMinutes=?parseInt(?(curShowTimeSeconds?-?nextHours*3600?)?/?60);
var?nextSeconds?=?nextShowTimeSeconds?%?60;
var?curHours?=?parseInt(curShowTimeSeconds?/?3600);
var?curMinutes=?parseInt(?(curShowTimeSeconds?-?curHours*3600?)?/?60);
var?curSeconds?=?curShowTimeSeconds?%?60;
if(nextSeconds?!=?curSeconds){
if(?parseInt(curHours/10)?!=?parseInt(nextHours/10)){
addBalls(MARGIN_LEFT?+?0,MARGIN_TOP,parseInt(curHours/10))
}
if(?parseInt(curHours%10)?!=?parseInt(nextHours%10)){
addBalls(MARGIN_LEFT?+?15*(RADIUS+1),MARGIN_TOP,parseInt(curHours/10))
}
if(?parseInt(curMinutes/10)?!=?parseInt(nextHours/10)){
addBalls(MARGIN_LEFT?+?39*(RADIUS+1),MARGIN_TOP,parseInt(curMinutes/10))
}
if(?parseInt(curMinutes%10)?!=?parseInt(nextHours%10)){
addBalls(MARGIN_LEFT?+?54*(RADIUS+1),MARGIN_TOP,parseInt(curMinutes%10))
}
if(?parseInt(curSeconds/10)?!=?parseInt(curSeconds/10)){
addBalls(MARGIN_LEFT?+?78*(RADIUS+1),MARGIN_TOP,parseInt(curHours/10))
}
if(?parseInt(curSeconds%10)?!=?parseInt(nextHours%10)){
addBalls(MARGIN_LEFT+93*(RADIUS+1),MARGIN_TOP,parseInt(nextSeconds%10))
}
curShowTimeSeconds?=?nextShowTimeSeconds;
}
updateBalls();
}
function?updateBalls(){
for(var?i=0;i<balls.length;i++){
balls[i].x+=?balls[i].vx;
balls[i].y+=?balls[i].vy;
balls[i].vy+=?balls[i].g;
}
if(?balls[i].y?>=?WINDOW_HEIGHT-RADIUS){
balls[i].y?=?WINDOW_HEIGHT-RADIUS;
balls[i].vy?=?-?balls[i].vy*0.75;
}
}
function?addBalls(x,y,num){
for(var?i=0;i<digit[num].length;i++){
for(var?j=0;j<digit[num].length;j++){
if(digit[num][i][j]?==?1){
var?aBall?=?{
x:x+j*2*(RADIUS+1)+(RADIUS+1),
y:y+i*2*(RADIUS+1)+(RADIUS+1),
g:1.5+Math.random(),
vx:Math.pow(-1,Math.ceil(Math.random()*1000)?)?*?4,
vy:-5,
color:colors[Math.floor(Math.random()*colors.length)]
}
balls.push(aBall)
}
}
}
}
function?render(cxt){
cxt.clearRect(0,0,WINDOW_WIDTH,WINDOW_HEIGHT);
var?hours?=?parseInt(curShowTimeSeconds?/?3600);
var?minutes=?parseInt(?(curShowTimeSeconds?-?hours*3600?)?/?60);
var?seconds?=?curShowTimeSeconds?%?60;
renderDigit(MARGIN_TOP,MARGIN_LEFT,parseInt(hours/10),cxt);
renderDigit(MARGIN_LEFT+18*(RADIUS+1),MARGIN_TOP-30,parseInt(hours%10),cxt);
renderDigit(MARGIN_LEFT+31*(RADIUS+1),MARGIN_TOP-30,10,cxt);
renderDigit(MARGIN_LEFT+39*(RADIUS+1),MARGIN_TOP-30,parseInt(minutes/10),cxt);
renderDigit(MARGIN_LEFT+54*(RADIUS+1),MARGIN_TOP-30,parseInt(minutes%10),cxt);
renderDigit(MARGIN_LEFT+69*(RADIUS+1),MARGIN_TOP-30,10,cxt);
renderDigit(MARGIN_LEFT+78*(RADIUS+1),MARGIN_TOP-30,parseInt(seconds/10),cxt);
renderDigit(MARGIN_LEFT+93*(RADIUS+1),MARGIN_TOP-30,parseInt(seconds%10),cxt);
for(var?i=0;i<balls.length;i++){
cxt.fillStyle?=?balls[i].color;
cxt.beginPath()
cxt.arc(balls[i].x,balls[i].y,RADIUS,?0?,?2*Math.PI,ture)
cxt.colosePath()
cxt.fill()
}
}
function?renderDigit(x,y,num,cxt){
cxt.fillStyle?=?"rgb(0,102,153)";
for(var?i=0;i<digit[num].length;i++){
for(var?j=0;j<digit[num][i].length;j++){
if(digit[num][i][j]==1){
cxt.beginPath();
cxt.arc(?x+j*2*(RADIUS+1)+(RADIUS+1)?,?y+i*2*(RADIUS+1)+(RADIUS+1)?,?RADIUS,0,2*Math.PI);
cxt.closePath()?//fengbi
cxt.fill()
}
}
}
}
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