Question

我有一个直到昨天都运转良好的项目。我的Chrome已更新为最新版本。问题是我无法下载和上传文件。但是，当我将Chrome版本降级时，它似乎可以正常工作。我可以知道这种现象的原因。

先谢谢了。

以下是我的代码：

<form action="" method="post" name="worklist_upload_form" onsubmit="return worklist_upload(this);" enctype="multipart/form-data">
<input type="file" name="upload_worklist" id="upload_worklist" style="width:200px;" accept=".csv" />
</form>

以下是我的js代码：

function worklist_upload(){
    if(document.getElementById("upload_worklist").value == ""){
        //document.getElementById("error_upload_worklist").style.display = "block";
     dispmsg("error","Warning","Please upload the worklist");
    //  document.getElementById("error_upload_worklist").innerHTML = "<img src='images/red_wrong.png' width='12' alt='wrong' /> Please upload the worklist";
        document.getElementById("upload_worklist").focus();
        return false;
    }

    if(document.getElementById("upload_worklist").value != ""){  
        var fileName = document.getElementById("upload_worklist").value;
        var ext = fileName.substring(fileName.lastIndexOf('.') + 1);
        if( ext == "xls" || ext == "xlsx") {
            //return true;
        }else{
      dispmsg("error","Warning","Please select .xls or .xlsx format");
        /*  document.getElementById("error_upload_worklist").innerHTML = "<img src='images/red_wrong.png' width='12' alt='wrong' /> Please select .csv or xls format";
            document.getElementById("upload_worklist").focus();*/
        return false;
        }
    }
}

Answer 1

在您的JavaScript代码上，最好检查ext 不是否等于.xls或.xlsx并显示错误（如果不相等）。

因此您的JavaScript代码应如下：

function worklist_upload(){
    if(document.getElementById("upload_worklist").value == ""){
        //document.getElementById("error_upload_worklist").style.display = "block";
     dispmsg("error","Warning","Please upload the worklist");
    //  document.getElementById("error_upload_worklist").innerHTML = "<img src='images/red_wrong.png' width='12' alt='wrong' /> Please upload the worklist";
        document.getElementById("upload_worklist").focus();
        return false;
    }

    if(document.getElementById("upload_worklist").value != ""){  
        var fileName = document.getElementById("upload_worklist").value;
        var ext = fileName.substring(fileName.lastIndexOf('.') + 1);
        if( ext !== "xls" && ext !== "xlsx") {
            dispmsg("error","Warning","Please select .xls or .xlsx format");
        /*  document.getElementById("error_upload_worklist").innerHTML = "<img src='images/red_wrong.png' width='12' alt='wrong' /> Please select .csv or xls format";
            document.getElementById("upload_worklist").focus();*/
            return false;
        }else{
            return true;
        }
    }
}

此外，您的HTML表单接受.csv，而JavaScript代码检查.xls或.xlsx

编辑：您还可以通过其他方式（不是.xls来检查扩展名不是.xlsx还是if( ext !== "xls" && ext !== "xlsx")，

if(["xls","xlsx"].indexOf(ext) == -1) {
    // Display error messages
    return false;
}

用PHP下载和上传文件在更新的Chrome中不起作用

1 个答案: