2
我目前正在记事本上工作,但错误不断发生。我的代码有什么问题?我正在尝试使用对象数组打开交通灯。这是一个通过数组来完成的义务。交通灯onload功能
<html>
<body onload="loop()">
<div style="background:black;width:75px;height:140px;margin:auto;">
<div id ="red" style="background:red;width:40px;height:40px;border-radius:40px;margin:auto;"></div>
<div id = "yellow" style="background:#3F4A00;width:40px;height:40px;border-radius:40px;margin:auto"></div>
<div id = "green" style="background:#044A00;width:40px;height:40px;border-radius:40px;margin:auto"></div>
<!--The style refers to css, the background -->
</div>
<script>
var redlight = document.getElementById('redlight');
var yellowlight = document.getElementById('yellowlight');
var greenlight = document.getElementById('greenlight');
var colors = ["rgb(255, 0, 0)",'rgb(82, 2, 2)','rgb(255, 255, 0)','rgb(63, 74, 0)','rgb(0, 128, 0)','rgb(4, 74, 0)'];
function loop() {
if (redlight.style.backgroundColor == colors[0]){
redlight.style.backgroundColor = colors[1]; //switch off red
yellowlight.style.backgroundColor = colors[2]; //switch on yellow
}
else if (yellowlight.style.backgroundColor == colors[2]) {
yellowlight.style.backgroundColor = colors[3]; //switch off yellow
greenlight.style.backgroundColor = colors[4]; //switch on green
}
else if (greenlight.style.backgroundColor == colors[4]) {
greenlight.style.backgroundColor = colors[5]; //switch off green
redlight.style.backgroundColor = colors[0]; //switch on red
}
setInterval(function() {
},3000); //this sets the intervals for each traffic light to change colors
}
</script>
</body>
</html>
Thak你我改变了,但它仍然不起作用? – Abass
确定一秒。我会设置一个JS小提琴。 – kemiller2002
oops红色不起作用。多一秒。 – kemiller2002