Selenium 利用javascript 控制滚动条

　　以下备注所用test.html 的代码（我也是在网上找的，简单的修改显示文字而已），供大家使用：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd>
<html xmlns=http://www.w3.org/1999/xhtml>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Selenium Study</title>
<script language="JavaScript">
function check(){
var clientHeight = document.getElementById('text').clientHeight;
var scrollTop = document.getElementById('text').scrollTop;
var scrollHeight = document.getElementById('text').scrollHeight;
if(clientHeight + scrollTop < scrollHeight){
alert("Please view top news terms !"); return false;
}else{
alert("Thanks !");
}
}
function set()
{
document.getElementById('text').scrollTop=10000;
}
</script>
</head>
<body>
<form id="form1" method="post" onsubmit="return check();">
<textarea id="text" name="text" cols="70" rows="14">
Selenium IDE is the a Firefox plugin that does record-and-playback of interactions with the browser. Use this to either create simple scripts, assist in exploratory testing. It can also export Remote Control or WebDriver scripts, though they tend to be somewhat brittle and should be overhauled into some sort of Page Object-y structure for any kind of resiliency.
Selenium IDE is the a Firefox plugin that does record-and-playback of interactions with the browser. Use this to either create simple scripts, assist in exploratory testing. It can also export Remote Control or WebDriver scripts, though they tend to be somewhat brittle and should be overhauled into some sort of Page Object-y structure for any kind of resiliency.
Selenium IDE is the a Firefox plugin that does record-and-playback of interactions with the browser. Use this to either create simple scripts, assist in exploratory testing. It can also export Remote Control or WebDriver scripts, though they tend to be somewhat brittle and should be overhauled into some sort of Page Object-y structure for any kind of resiliency.
Selenium IDE is the a Firefox plugin that does record-and-playback of interactions with the browser. Use this to either create simple scripts, assist in exploratory testing. It can also export Remote Control or WebDriver scripts, though they tend to be somewhat brittle and should be overhauled into some sort of Page Object-y structure for any kind of resiliency.
</textarea><br /><br />
<input type="submit" id="submit" name="submit" value="Submit" />
</form>
</body>
</html>