如何在警报框中获取文件类型控件的值? [英] How to get value of file type control on alert box?

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本文介绍了如何在警报框中获取文件类型控件的值?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

Hii,

我正在使用这个脚本..当我将文件控件更改为其他内容并添加任何文件时,我想在我的警告框中输入路径名和文件





Hii,
I am using this script .. i want path name and file on my alert box when i change my file control to somthing else and add any file


$(document).ready(function () {
    debugger;
    $('#file').change(function () {
        var value = $(this).attr('value');
        alert(value);
    });
});









i我正在使用这个



但它在警报框中给我未定义的价值







i am using this

but its giving me undefined value on alert box

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="EnableSubmit_29.aspx.cs" Inherits="ContainSelector.EnableSubmit_29" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Enable Submit</title>
</head>
<script src="Js/ProductionFile.js" type="text/javascript"></script>
<script src="Js/EnableSubmit.js" type="text/javascript"></script>

<body>
    <form action="#" method="post" enctype="multipart/form-data">
  <input id="file" type="file" />
    <input id="btnUpload" type="submit" value="Upload" disabled="disabled" />
        </form>
</body>
</html>

推荐答案

(document).ready(function(){
debugger;
(document).ready(function () { debugger;


' #file')。change(function(){
var value =
('#file').change(function () { var value =


t他的)。attr(' value');
alert( value );
});
});
(this).attr('value'); alert(value); }); });









i我正在使用此



但它在警报框中给我未定义的值







i am using this

but its giving me undefined value on alert box

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="EnableSubmit_29.aspx.cs" Inherits="ContainSelector.EnableSubmit_29" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Enable Submit</title>
</head>
<script src="Js/ProductionFile.js" type="text/javascript"></script>
<script src="Js/EnableSubmit.js" type="text/javascript"></script>

<body>
    <form action="#" method="post" enctype="multipart/form-data">
  <input id="file" type="file" />
    <input id="btnUpload" type="submit" value="Upload" disabled="disabled" />
        </form>
</body>
</html>


这篇关于如何在警报框中获取文件类型控件的值?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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