search

Home  >  Article  >  Web Front-end  >  JavaScript implements method to control open file save as dialog box_javascript skills

JavaScript implements method to control open file save as dialog box_javascript skills

WBOY
WBOYOriginal
2016-05-16 16:03:222604browse

The example in this article describes how to use JavaScript to control the open file save as dialog box. Share it with everyone for your reference. The details are as follows:

Here, the image save as dialog box is opened through JS, prompting the user to save the file

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<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="js/jquery.min.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"))
jQuery('<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.frames("_SAVEASIMAGE_TEMP_FRAME").document.execCommand("SaveAs");
}
//-->
</script>
</head>
<body>
<input type="button" value="download image" 
onclick="downLoadImage('http://www.jb51.net/images/logo.gif');">
</body>
</html>

I hope this article will be helpful to everyone’s JavaScript programming design.

Statement：
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article：js implements touch mobile touch screen sliding event_javascript skillsNext article：js implements touch mobile touch screen sliding event_javascript skills

Related articles

See more