有一道题要实现输入rgb数值，实现更换页面背景色的功能，如下图所示：文章来源地址:https://www.yii666.com/article/756098.html
文章地址https://www.yii666.com/article/756098.html网址:yii666.com
答案：
<html>
<head>
<script type="text/javascript">
window.onload=function(){
var change = document.getElementById("change");
change.onclick = function(){
var r = document.getElementById("r").value;
var g = document.getElementById("g").value;
var b = document.getElementById("b").value;
document.body.style.backgroundColor = "rgb("+r+","+g+","+b+")";
}
}
</script>
</head>
<body>
r: <input type="text" id="r" value="123"/><br>
g: <input type="text" id="g" value="123"/><br>
b: <input type="text" id="b" value="123"/><br>
<button id="change">change</button
</body>
</html>