JS实现保存当前网页HTML到本地(Chrom Firefox)

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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>网页HTML存本地</title>
<script src="http://libs.baidu.com/jquery/1.9.0/jquery.js"></script>
</head>
<body>
<a href="#">保存文件</a>
<script>
function fake_click(obj) {
    var ev = document.createEvent("MouseEvents");
    ev.initMouseEvent(
        "click", true, false, window, 0, 0, 0, 0, 0
        , false, false, false, false, 0, null
        );
    obj.dispatchEvent(ev);
}
 
function export_raw(name, data) {
   var urlObject = window.URL || window.webkitURL || window;
 
   var export_blob = new Blob([data]);
 
   var save_link = document.createElementNS("http://www.w3.org/1999/xhtml", "a")
   save_link.href = urlObject.createObjectURL(export_blob);
   save_link.download = name;
   fake_click(save_link);
}
var test=document.getElementsByTagName('html')[0].outerHTML;
console.log(test);
$('a').click(function() {
export_raw('test.html', test);
});
</script>
</body>
</html>