javascript獲得網頁窗口實際大小的示例代碼

2019-11-20 22:17:09

字體：大中小

來源：轉載

供稿：網友

javascript代碼：

 
function get_page_size() 
{ 
var re = {}; 
if (document.documentElement && document.documentElement.clientHeight) 
{ 
var doc = document.documentElement; 
re.width = (doc.clientWidth>doc.scrollWidth)?doc.clientWidth-1:doc.scrollWidth; 
re.height = (doc.clientHeight>doc.scrollHeight)?doc.clientHeight:doc.scrollHeight; 
} 
else 
{ 
var doc = document.body; 
re.width = (window.innerWidth>doc.scrollWidth)?window.innerWidth:doc.scrollWidth; 
re.height = (window.innerHeight>doc.scrollHeight)?window.innerHeight:doc.scrollHeight; 
} 
return re; 
} 
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代碼實例：

復制代碼代碼如下:

 
<!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>獲取窗口大小</title> 
<script type="text/java script"> 
function getPageSize() 
{ 
var re = {}; 
if (document.documentElement && document.documentElement.clientHeight) 
{ 
var doc = document.documentElement; 
re.width = (doc.clientWidth>doc.scrollWidth)?doc.clientWidth-1:doc.scrollWidth; 
re.height = (doc.clientHeight>doc.scrollHeight)?doc.clientHeight:doc.scrollHeight; 
} 
else 
{ 
var doc = document.body; 
re.width = (window.innerWidth>doc.scrollWidth)?window.innerWidth:doc.scrollWidth; 
re.height = (window.innerHeight>doc.scrollHeight)?window.innerHeight:doc.scrollHeight; 
} 
//結果輸出至兩個文本框 
document.form1.availHeight.value= re.width; 
document.form1.availWidth.value= re.height; 
return re; 
} 
</script> 
</head> 
<body> 
<form action="#" method="get" name="form1" id="form1"> 
瀏覽器窗口 的 實際高度: 
<input type="text" name="availHeight" size="4"/> 
<br /> 
瀏覽器窗口 的 實際寬度: 
<input type="text" name="availWidth" size="4"/> 
<br /> 
</form> 
<script type="text/java script"> 
getPageSize(); 
window.onresize=getPageSize; 
</script> 
</body> 
</html> 