javascript - IE8 - IFRAME 导致整个页面的刷新

Question

我有一个基于 IFRAME 的上传文件。它适用于 Firefox 和 Google Chrome，但适用于 Internet Explorer 8，当您发送文件时，整个页面都会刷新。按照我的代码：

JS：

  function test(){
     iframe = document.createElement("IFRAME");  
     iframe.name = "iframe_upload";
     iframe.id = "iframe_upload"; //some browsers target by id not name
     document.body.appendChild(iframe);
     document.getElementById("test").target = "iframe_upload";
  }

HTML：

<form id="test" method="post" target="iframe_upload" enctype="multipart/form-data" onsubmit="javascript:test()" action="test.php">
  <input name="image" type="file" /> 
  <input type="submit" value="Submit" />
</form>

Answer 1

行动回报onsubmit：

onsubmit="return test();"

并false从函数返回：

function test(){
   iframe = document.createElement("IFRAME");  
   iframe.name = "iframe_upload";
   iframe.id = "iframe_upload"; //some browsers target by id not name
   document.body.appendChild(iframe);
   document.getElementById("test").target = "iframe_upload";
   return false;
}