Implementation ideas for taking local paths under js Firefox_javascript skills

Copy code The code is as follows:

/* Get the full local path under Firefox*/
function getFullPath (obj)
{
if(obj)
{
//ie
if (window.navigator.userAgent.indexOf("MSIE")>=1)
{
obj.select();
return document.selection.createRange().text;
}
//firefox
else if(window.navigator.userAgent.indexOf("Firefox" )>=1)
{
if(obj.files)
{
//return obj.files.item(0).getAsDataURL();
return window.URL. createObjectURL(obj.files[0]);
}
return obj.value;
}
return obj.value;
}
}