相关疑难解决方法(0)

我通过chrome扩展程序上传文件作为表单数据,我的代码如下所示.这里的问题是文件浏览窗口打开一秒钟然后消失.
该问题仅出现在Mac OS中.

manifest.json的:

"background": {
  "scripts": ["jszip.js", "background.js"]
},

background.js:

chrome.runtime.onMessage.addListener(function (msg) {
  if (msg.action === 'browse')
  {
    var myForm=document.createElement("FORM");
    var myFile=document.createElement("INPUT");
    myFile.type="file";
    myFile.id="selectFile";
    //myFile.onclick="openDialog()";
    myForm.appendChild(myFile);
    var myButton=document.createElement("INPUT");
    myButton.name="submit";
    myButton.type="submit";
    myButton.value="Submit";
    myForm.appendChild(myButton);
    document.body.appendChild(myForm);
  }
});

popup.js:

window.onload = function () {
  chrome.runtime.sendMessage({
    action: 'browse'
  });
}