0
我创建了一个像这样的简单网站,当单击该框时将球放入框中。但每次只有一球落下。我想多球落入框中多次点击框时:
将多个球放入框中(javascript)
这里是我使用的代码:我想多球要投进箱子时
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript">
function popup (n) {
var context;
var dx= 4;
var dy=4;
var y=25;
var elWidth=150;
var ballWidth=10;
var x=(elWidth+ballWidth)/2;
var counter = 0;
var myCanvas=document.getElementById('myCanvas'+n);
function draw(){
context= myCanvas.getContext('2d');
context.clearRect(0,0,200,235);
context.beginPath();
context.fillStyle="red";
context.arc(x,y,10,0,Math.PI*2,true);
context.closePath();
context.fill();
if(y>300){clearInterval(interval);}
if(y<0 || y>224)dy=0;
y+=dy;
myCanvas.className='active';
}
var interval=setInterval(draw,10);
}
</script>
<style>
html,body{
margin:0;
}
div.time {
display: table;
background: green;
float: left;
margin: 20px;
zoom: 1;
position: relative;
top: 75px;
left:35px;
width: 150px;
height: 150px;
}
span {
display: table-cell;
text-align: center;
vertical-align: middle;
color: white
-webkit-touch-callout: none;
-webkit-user-select: none;
-khtml-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}
canvas{
z-index:10000;
transform: inherit;
float: left;
margin: 20px;
zoom: 1;
position: relative;
top: -200px;
left:35px;
margin:20px;
}
#myCanvas1{clear:left;}
</style>
</head>
<body>
<div class="time"><span>Past Thoughts</span></div>
<div class="time"><span>Present Thoughts</span></div>
<div class="time"><span>Future Thoughts</span></div>
<canvas id="myCanvas1" width="150" height="235" onclick="popup(1)"></canvas>
<canvas id="myCanvas2" width="150" height="235" onclick="popup(2)"></canvas>
<canvas id="myCanvas3" width="150" height="235" onclick="popup(3)"></canvas>
</body>
</html>
这些框被点击多次。但老球应该留在箱子里。如何实现?我想添加一些响应,以便它可以在手机和平板电脑上测试。我如何在不改变功能的情况下做到这一点?
如果我继续添加球,它会出现箱子,我不希望发生这种情况。 – Test123 2014-11-01 07:16:55
在源代码中,我增加了x值以区分是否有多个球正确创建。如果你不想这样做,你可以简单地将'+ counter'从赋值中移除到x。我会编辑答案。 – 2014-11-01 14:05:10
如果您阅读此评论,请接受它为答案,因为它解决了您的问题:) – 2014-11-01 14:08:14