<html>
<head>
<meta http-equiv="Content-Type" content="text/htmlcharset=gbk" />
<title>JS实现下载文件</title>
<script language=JavaScript>
function download(obj){
if(document.all.ifrm==null){
objIframe=document.createElement("IFRAME")
document.body.insertBefore(objIframe)
objIframe.outerHTML="<iframe name=ifrm style='width:0hieght:0' src="+obj.href+"></iframe>"
re=setTimeout("download()",1)
}
else{
clearTimeout(re)
files=window.open(obj.href,"ifrm")
files.document.execCommand("SaveAs")
document.all.ifrm.removeNode(true)
}}
</script>
</head>
<body >
文档列表：请点出下载<br/>
<a href="file01.doc" id="filelist" onclick="download()return false" style="cursor:hand">文件1</a> <br/>
<a href="file02.pdf" id="filelist" onclick="download()return false" style="cursor:hand">文件2</a>
</body>
</html>
<script type="text/javascript">
$("a").click(function () {
var href = this
var url = href.href
var name = href.innerHTML
if (url.indexOf("kindeditor") >= 0) {
download(url, name)
return false
}
})
/**
* 下载
* @param {String} url 目标文件地址
* @param {String} filename 想要保存的文件名称
*/
function download(url, filename) {
getBlob(url, function (blob) {
saveAs(blob, filename)
})
}
/**
* 获取 blob
* @param {String} url 目标文件地址
* @return {cb}
*/
function getBlob(url, cb) {
var xhr = new XMLHttpRequest()
xhr.open('GET', url, true)
xhr.responseType = 'blob'
xhr.onload = function () {
if (xhr.status === 200) {
cb(xhr.response)
}
}
xhr.send()
}
/**
* 保存
* @param {Blob} blob
* @param {String} filename 想要保存的文件名称
*/
function saveAs(blob, filename) {
if (window.navigator.msSaveOrOpenBlob) {
navigator.msSaveBlob(blob, filename)
} else {
var link = document.createElement('a')
var body = document.querySelector('body')
link.href = window.URL.createObjectURL(blob)
link.download = filename
// fix Firefox
link.style.display = 'none'
body.appendChild(link)
link.click()
body.removeChild(link)
window.URL.revokeObjectURL(link.href)
}
}
</script>
