-4
下面是我的代碼...它工作完全正常,但...交通燈代碼
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<body>
<img id="trafficlights" src="Redlight.jpeg" style="width:128px;height:128px;">
<button type="button" onclick="changetrafficlights()">Change Traffic Lights</button>
<script>
var position = 0;
var list = ["Redlight.jpeg","RedAmberlight.jpeg","Greenlight.jpeg", "Amberlight.jpeg"];
function changetrafficlights()
{position = position + 1;
if(position == list.length){
position = 0;
}
var image = document.getElementById('trafficlights');
image.src=list[position];}
</script>
</body>
</html>
我試圖做一個JavaScript代碼將使用while循環或for循環中,將經過變量「列表」自動
什麼對您當前的代碼不起作用?什麼是問題? –
Java!= JavaScript – shmosel
[循環和迭代文檔](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Loops_and_iteration) –