摘要：<!DOCTYPE html> <html> <head> <title>dom_demo7zuoye</title> </head> <body> <p>text01</p> <p>text02</p> <p id="tt
<!DOCTYPE html>
<html>
<head>
<title>dom_demo7zuoye</title>
</head>
<body>
<p>text01</p>
<p>text02</p>
<p id="tt">text03</p>
<p>text4</p>
<p>text5</p>
<input type="button" value="test1" onclick="doit()">
<body>
<script type="text/javascript">
//var vt1;
//
function doit()
{
var vt2,vt3,vt4;
var vt1 = document.querySelectorAll("p");
console.log(vt1);
vt1[0].style.backgroundColor="red";
console.log(vt1.item(1));
vt1.item(1).style.color="blue";
vt2 = document.querySelector("#tt");
console.log(vt2);
vt2.style.fontSize = "30px";
// vt2 =
//alert("hello");
}
</script>
</html>css选择器 选择标签 改变样式
批改老师：灭绝师太批改时间：2019-01-24 14:54:22
老师总结：完成的不错，作业可以尝试案例哦，用到实际中去
