image saved on local storage pass to input file

Question

I have successfully stored a base64 image to the local storage.

I have tried and failed in adding the stored value to an input file field.

document.getElementsByName("inputfieldname")[0].setAttribute("value", getSavedValue("thesavedkey"));

<input type="file" name="inputfieldname">

Answer 1

由于存在旧版安全漏洞，因此无法以这种方式为file类型输入设置值。

Answer 2

document.getElementById('mytext').value =  = window.sessionStorage.getItem('user')

尝试以上之一。