Javascript 交通灯空载功能
我目前正在记事本中处理此问题，但错误不断发生。我的代码怎么了？我正在尝试用一个对象数组制作一个重载交通灯。通过数组来实现这一点是一种义务Javascript 交通灯空载功能,javascript,html,css,Javascript,Html,Css,我目前正在记事本中处理此问题，但错误不断发生。我的代码怎么了？我正在尝试用一个对象数组制作一个重载交通灯。通过数组来实现这一点是一种义务 <html> <body onload="loop()"> <div style="background:black;width:75px;height:140px;margin:auto;"> <div id ="red" style="background:red;width:40px;height:40px;
<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>
var redlight=document.getElementById（'redlight'）；
var yellowlight=document.getElementById（'yellowlight'）；
var greenlight=document.getElementById（'greenlight'）；
变量颜色=[“rgb（255,0,0）”，“rgb（82,2,2）”，“rgb（255,255,0）”，“rgb（63,74,0）”，“rgb（0,128,0）”，“rgb（4,74,0）”；
函数循环（）{
if（redlight.style.backgroundColor==颜色[0]）{
redlight.style.backgroundColor=颜色[1]；//关闭红色
yellowlight.style.backgroundColor=颜色[2]；//打开黄色
}
else if（yellowlight.style.backgroundColor==颜色[2]）{
yellowlight.style.backgroundColor=颜色[3]；//关闭黄色
greenlight.style.backgroundColor=颜色[4]；//打开绿色
}
else if（greenlight.style.backgroundColor==颜色[4]）{
greenlight.style.backgroundColor=颜色[5]；//关闭绿色
redlight.style.backgroundColor=颜色[0]；//打开红色
}
setInterval（函数（）{
}，3000）；//设置每个交通灯改变颜色的间隔
}
var redlight = document.getElementById('redlight');
var yellowlight = document.getElementById('yellowlight');
var greenlight = document.getElementById('greenlight');
<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>
<div id ="redlight" style="background:red;width:40px;height:40px;border-radius:40px;margin:auto;"></div>
<div id = "yellowlight" style="background:#3F4A00;width:40px;height:40px;border-radius:40px;margin:auto"></div>
<div id = "greenlight" style="background:#044A00;width:40px;height:40px;border-radius:40px;margin:auto"></div>