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How to implement asynchronous file upload in Yuansheng JS

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php中世界最好的语言Original
2018-04-16 17:32:231983browse

This time I will show you how to implement asynchronous file upload in Yuansheng JSUpload, what are the precautions for Yuansheng JS to implement asynchronous file upload, the following is a practical case, let’s take a look one time. 

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
 <title></title>
</head>
<body>
<label for="text">名称</label>
<input type="text" id="text" name="name"/>
<label for="file">文件</label>
<input type="file" id="file" name="file"/>
<button type="button" onclick="ajaxUploadFile()">确定</button>
</body>
<script type="text/javascript">
 function ajaxUploadFile() {
  var formData = new FormData();
  var xmlhttp;
  if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari
   xmlhttp = new XMLHttpRequest();
  }else {// code for IE6, IE5
   xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
  }
  xmlhttp.open("POST","/data",true);
  xmlhttp.setRequestHeader("X-Requested-With", "XMLHttpRequest");
  formData.append("name",document.getElementById("text").value);
  formData.append("file",document.getElementById("file").files[0]);
  xmlhttp.send(formData);
  xmlhttp.onreadystatechange=function() {
   if (xmlhttp.readyState==4) {
    if (xmlhttp.status==200) {
     console.log("上传成功"+xmlhttp.responseText);
    }else {
     console.log("上传失败"+xmlhttp.responseText);
    }
   }
  }
 }
</script>
</html>

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

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