JSマウスイベント(マウスのクリック/リリースを監督し、マウスの移動/移動など)
3282 ワード
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta http-equiv="Content-Language" content="zh-cn" />
<title>Javascript </title>
<head>
<style type="text/css">
body {background-color:#eeeeee}
div.greenBtn
{
color:white;
background-color:green;
width:200px;
height:20px;
text-align:center;
padding-top:20px;
padding-bottom:20px;
}
button.greenBtn
{
color:white;
background-color:green;
width:200px;
height:50px;
text-align:center;
border:0px;
}
</style>
</head>
<body onload="checkCookies()"> <!-- cookies -->
<h3>（ ） HTML </h3>
<h4>1. </h4>
<p onclick="this.innerHTML = ' '"> </p>
<h4>2. </h4>
<p onclick="changeText(this)"> </p>
<script>
function changeText(ele){
ele.innerHTML = " ";
}
</script>
<script>
function checkCookies(){
if (navigator.cookieEnabled){
// alert(" cookie")
}else{
// alert(" cookie")
}
}
</script>
<h3>（ ）onload onunload </h3>
<p>
onload onunload 。<br>
onload ， 。<br>
onload onunload cookie
</p>
<h3>（ ）onchange </h3>
<p> ：<input type="text" onchange="toUpper(this)">
<p> ， 。</p>
<script>
function toUpper(ele){
ele.value = ele.value.toUpperCase();
}
</script>
<h3>（ ）onmouseover onmouseout </h3>
<div class="greenBtn" onmouseover="mOver(this)" onmouseout="mOut(this)">
</div>
<script>
function mOver(ele){
ele.innerHTML = " "
}
function mOut(ele){
ele.innerHTML = " "
}
</script>
<h3>（ ）onmousedown、onmouseup onclick </h3>
<button class = "greenBtn" onmousedown="mDown(this)" onmouseup="mUp(this)"> </button>
<script>
function mDown(ele){
ele.innerHTML = " "
ele.style.backgroundColor = "blue"
}
function mUp(ele){
ele.innerHTML = " "
ele.style.backgroundColor = "green"
}
</script>
<h3>（ ）onfocus </h3>
<p> ，
<input type="text"
onfocus = "changeBgColor(this,true)"
onblur="changeBgColor(this,false)">
</p>
<script>
function changeBgColor(ele,hasFocus){
if(hasFocus){
ele.style.backgroundColor = "yellow"
}else{
ele.style.backgroundColor = "gray"
}
}
</script>
</body>