javascript实现另存为对话框
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2022-06-04 07:56:12
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<html>
<head>
<title> New Document </title>
<meta name="Generator" content="EditPlus">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
<script src="jquery-1.3.js" type="text/javascript"></script>
<script language="JavaScript">
<!--
function downLoadImage(imagePathURL){
//如果中间IFRAME不存在，则添加
if(!document.getElementById("_SAVEASIMAGE_TEMP_FRAME"))
$('<iframe style="display:none;" id="_SAVEASIMAGE_TEMP_FRAME" name="_SAVEASIMAGE_TEMP_FRAME" onload="_doSaveAsImage();" width="0" height="0" src="about:blank"></iframe>').appendTo("body");
if(document.all._SAVEASIMAGE_TEMP_FRAME.src!=imagePathURL){
//图片地址发生变化，加载图片
document.all._SAVEASIMAGE_TEMP_FRAME.src = imagePathURL;
}else{
//图片地址没有变化，直接另存为
_doSaveAsImage();
}
}
function _doSaveAsImage(){
if(document.all._SAVEASIMAGE_TEMP_FRAME.src!="about:blank")
document.getElementById('_SAVEASIMAGE_TEMP_FRAME').document.execCommand("SaveAs");
}
//-->
</script>
</head>
<body>
<input type="button" value="download image" onclick="downLoadImage('r_beyond1991.jpg');">
</body>
</html>
<input type="button" value="保存" onclick="document.execCommand('SaveAs')">
<input type="button" value="另存为" onclick="document.execCommand('SaveAs',false,'c:\\oak.htm')">
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