Detailed explanation of JS/jquery upload file format filtering steps
这次给大家带来JS/jquery上传文件格式过滤步骤详解，JS/jquery上传文件格式过滤的注意事项有哪些，下面就是实战案例，一起来看一下。
注：在head中加入jquery的引入语句，博客还是会过滤掉引入的js文件。
javascript中对上传文件格式过滤的方法：
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd"> <html>
<head>
<style><!--
.errorInfo{
color:red;
padding-left:5px;
}
--></style><style bogus="1"> .errorInfo{
color:red;
padding-left:5px;
}</style>
<script type="text/javascript"><!--
function validateFile(){
var flag=true;
var fileObject=document.getElementById("file");
var errorObject=document.getElementById("error");
var filepath=fileObject.value;
if(filepath==undefined||filepath==""){
fileObject.focus();
errorObject.innerText="请选择上传文件！";
flag=false;
}else{
var fileArr=filepath.split("\\");
var fileTArr=fileArr[fileArr.length-1].toLowerCase().split(".");
var filetype=fileTArr[fileTArr.length-1];
if(filetype!="xls"&&filetype!="xlsx"){
fileObject.focus();
errorObject.innerText="上传文件必须为Excel文件！";
flag=false;
}else{
errorObject.innerText="";
}
}
//进行其他相关校验
if(flag){
alert("文件上传成功");
}
}
// --></script>
</head>
<body>
<form action="#" method="POST" enctype="multipart/form-data">
<p><input type="file" id="file"><span id="error" class='errorInfo'></span></p>
<p><input type="button" value="上传" id="DataReport" onclick="validateFile()"></p>
</form>
</body>
</html>相信看了本文案例你已经掌握了方法，更多精彩请关注php中文网其它相关文章！
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