[Beschreibung]
Dieses Script ermöglicht eine Voransicht eines hochzuladenden Bildes...
[Kompatibilität]
[Code]
<script type="text/javascript"> <!-- Begin /* This script and many more are available free online at The JavaScript Source!! http://www.nightfire.ch/java/ Created by: Abraham Joffe :: http://www.abrahamjoffe.com.au/ */ /***** CUSTOMIZE THESE VARIABLES *****/ // width to resize large images to var maxWidth=100; // height to resize large images to var maxHeight=100; // valid file types var fileTypes=["bmp","gif","png","jpg","jpeg"]; // the id of the preview image tag var outImage="previewField"; // what to display when the image is not valid var defaultPic="blank.gif"; /***** DO NOT EDIT BELOW *****/ function preview(what){ var source=what.value; var ext=source.substring(source.lastIndexOf(".")+1,source.length).toLowerCase(); for (var i=0; i<fileTypes.length; i++) if (fileTypes[i]==ext) break; globalPic=new Image(); if (i<fileTypes.length) globalPic.src=source; else { globalPic.src=defaultPic; alert("THAT IS NOT A VALID IMAGE\nPlease load an image with an extention of one of the following:\n\n"+fileTypes.join(", ")); } setTimeout("applyChanges()",200); } var globalPic; function applyChanges(){ var field=document.getElementById(outImage); var x=parseInt(globalPic.width); var y=parseInt(globalPic.height); if (x>maxWidth) { y*=maxWidth/x; x=maxWidth; } if (y>maxHeight) { x*=maxHeight/y; y=maxHeight; } field.style.display=(x<1 || y<1)?"none":""; field.src=globalPic.src; field.width=x; field.height=y; } // End --> </script>
<div align="center" style="line-height: 1.9em;"> Test it by locating a valid file on your hard drive: <br> <input type="file" id="picField" onchange="preview(this)"> <br> <img alt="Graphic will preview here" id="previewField" src="spacer.gif"> <br> <div style="font-size: 7pt;"> Script submitted by: <a href="http://www.abrahamjoffe.com.au/">Sydney Wedding Video / DVD</a></div> </div>
Abraham Joffe
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