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JS get picture size and picture size width

Source: Internet
Author: User
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JS get picture size and picture size width
This is a use of JS get picture size and picture size width Oh, the first example can get picture size, the second according to the size of the picture pops up a preview window of the same size.
<script language= Web page Special effects >

function Index_image_valid () {


Document.pho_up.indeximg.src=document.pho_up.pho_index.value;


Imagewidth=document.pho_up.indeximg.width;


Imageheigth=document.pho_up.indeximg.height;


alert ("Wide:" +imagewidth+ "N High:" +imageheigth);


  }  


&lt;/script&gt;


&lt;/head&gt;


&lt;form name= "pho_up" method= "post" enctype= "Multipart/form-data" &gt;


&lt;input type= "File" Name= "Pho_index" size= "Class=input onchange=" Javascript:index_image_valid (); " &gt;


&lt;img name=indeximg&gt;


&lt;/form&gt;



Method Two

  <HTML>
<head>
<title> Show picture dimensions </title>
<script language= "JavaScript"
<!--
Function preview (src)
{
NewWindow =window.open (', ' newwindow ', ' menubar=0,toolbar=0, Location=0,directories=0,status=0,scrollbars=0,resizable=1 ');
Newwindow.document.open ();
Newwindow.document.write (' <html><body bgcolor= ' #cccccc ' > ');
Newwindow.document.write (' <div align= "center" ><img src= "' +src+ '" Name= "img" ></div><br > ');
width = newwindow.document.images[' img '].width;
height = newwindow.document.images[' img '].height;
Newwindow.document.write (' File size; ' +width+ ' * ' +height);
if (width>100 && height>100)
      Newwindow.resizeto (width+100, HEIGHT+100);
Else
      Newwindow.resizeto (300,300);
}
//-->
</script>
</head>

<body>
<p align= "Center" > File location
<input type= "File" Name= "Newsimage" onchange= "Javascript:preview (this.value)" >
</p>
</body>
</html>

PHP Tutorials
?

$arr =getimagesize ("Images/album_01.gif");


echo $arr [3];


$strarr =explode ("" ", $arr [3]);


echo $strarr [1];


?>

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