
正文
JS——控制标记的样式
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1.定义一个div,宽度为100px,高度为100px,背景色为粉色。
定义一个事件,鼠标移入时背景色变为蓝色,宽度变为200px.
定义一个事件,鼠标移出时背景色变为红色。
html文件:
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
<link href="StyleSheet.css" rel="stylesheet" />
</head>
<body>
<div class="div1" id="dd1"></div> </body>
</html>
<script type="text/javascript">
var obt = document.getElementById('dd1');
//鼠标移入事件
obt.onmouseover = function ()
{
obt.style.backgroundColor = "blue";
obt.style.width="200px";
} //鼠标移除事件
obt.onmouseout = function () {
obt.style.backgroundColor = "red";
} </script>
CSS文件:
.div1 {
width:100px;
height:100px;
background-color:pink;
}
1.定义5个div,宽度为100px,高度为100px,背景色为粉色。
定义一个事件,鼠标移入时背景色变为蓝色,宽度变为200px.
定义一个事件,鼠标移出时背景色变为红色,宽度变为100px.
HTML文件:
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<link href="StyleSheet.css" rel="stylesheet" />
</head>
<body>
<div class="div1" id="dd1"></div>
<div class="div1" id="Div11"></div>
<div class="div1" id="Div2"></div>
<div class="div1" id="Div3"></div>
<div class="div1" id="Div4"></div> </body>
</html>
<script type="text/javascript">
var obt = document.getElementsByClassName('div1');
//鼠标移入事件
for (var i = ; i < obt.length; i++) {
obt[i].onmouseover = function () {
this.style.backgroundColor = "blue";
this.style.width = "150px";
}
}
//鼠标移除事件
for (var i = ; i < obt.length; i++) {
obt[i].onmouseout = function () { this.style.backgroundColor = "red";
this.style.width = "100px";
}
}
</script>
CSS文件:
.div1 {
width:100px;
height:100px;
background-color:pink;
float:left;
margin-right:10px;
}
1.定义5个div,宽度为100px,高度为100px,背景色为粉色。
定义一个事件,鼠标移入时背景色变为蓝色,宽度变为200px.
定义一个事件,鼠标移出时背景色变为红色,宽度变为100px.
点击变为黑色,且同一时间只能有一个div是黑色。
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
<link href="StyleSheet.css" rel="stylesheet" />
</head>
<body>
<div class="div1">
<div class="div111"></div>
</div>
<div class="div1">
<div class="div111"></div>
</div>
<div class="div1">
<div class="div111"></div>
</div>
<div class="div1">
<div class="div111"></div>
</div>
<div class="div1">
<div class="div111"></div>
</div>
<div class="div1">
<div class="div111"></div>
</div>
<div class="div222"></div>
<div class="div222"></div>
<div class="div222"></div>
<div class="div222"></div>
<div class="div222"></div>
<div class="div222"></div>
</body>
</html>
<script type="text/javascript">
var obt = document.getElementsByClassName("div1");
var obt1 = document.getElementsByClassName("div111");
for (var i = ; i < obt.length; i++) { //点击事件
obt[i].onclick = function () {
//
for (var j = ; j < obt.length; j++) {
obt[j].style.backgroundColor = "pink";
}
this.style.backgroundColor = "black";
}
//鼠标移入事件
obt[i].onmouseover = function () {
//如果移入的div背景颜色不是黑色,则变成灰色
if( this.style.backgroundColor != "black")
this.style.backgroundColor = "gray";
} //鼠标移除事件
obt[i].onmouseout = function () {
//如果移除的div背景颜色为灰色,则变成粉色
if (this.style.backgroundColor=="gray")
this.style.backgroundColor = "pink";
}
}
</script>







