bootstrap 4 文件输入不显示文件名 [英] bootstrap 4 file input doesn't show the file name

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本文介绍了bootstrap 4 文件输入不显示文件名的处理方法，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

我在 Bootstrap 4 中的自定义文件输入类有问题.选择要上传的文件后，文件名不显示.

我使用此代码:

<div class="自定义文件"><input type="file" class="custom-file-input" id="inputGroupFile02"><label class="custom-file-label" for="inputGroupFile02">选择文件</label>
<div class="input-group-append"><button class="btn btn-primary">上传</button>

知道如何在不变得太复杂的情况下修复它吗?

解决方案

您需要使用 javascript 来显示所选文件的名称，如文档中所述:https://getbootstrap.com/docs/4.5/components/forms/#file-browser

您可以在这里找到解决方案:Bootstrap 4 文件输入

这是您示例的代码:

<头><link rel="样式表";href=https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css"；完整性=sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ"crossorigin =匿名"><script src="https://code.jquery.com/jquery-3.1.1.slim.min.js";完整性=sha384-A7FZj7v+d/sdmMqp/nOQwliLvUsJfDHW+k9Omg/a/EheAdgtzNs3hpfag6Ed950n"；crossorigin=匿名"></script><script src=https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js"完整性=sha384-DztdAPBWPRXSA/3eYEEUWrWCy7G5KFbe8fFjk5JAIxUYHKkDx6Qin1DkWx51bBrb"crossorigin=匿名"></script><script src=https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js"完整性=sha384-vBWWzlZJ8ea9aCX4pEW3rVHjgjt7zpkNpZk+02D9phzyeVkE+jo0ieGizqPLForn"crossorigin=匿名"></script><身体><div class="input-group mb-3"><div class="custom-file"><输入类型=文件"类=自定义文件输入"id="inputGroupFile02"/><label class="custom-file-label";for="inputGroupFile02">选择文件</label>

<div class="input-group-append"><button class="btn btn-primary">上传</button>

<脚本>$('#inputGroupFile02').on('change',function(){//获取文件名var 文件名 = $(this).val();//替换选择文件"；标签$(this).next('.custom-file-label').html(fileName);})

I have a problem with the custom-file-input class in Bootstrap 4. after I chose which file I want to upload the filename do not show.

I use this code:

<div class="input-group mb-3">
  <div class="custom-file">
    <input type="file" class="custom-file-input" id="inputGroupFile02">
    <label class="custom-file-label" for="inputGroupFile02">Choose file</label>
  </div>
  <div class="input-group-append">
    <button class="btn btn-primary">Upload</button>
  </div>
</div>

Any idea how I can fix it without getting too complicated?

解决方案

You need to use javascript to show the name of the choosed file, as written in the documentation: https://getbootstrap.com/docs/4.5/components/forms/#file-browser

Here you can find the solution: Bootstrap 4 File Input

That's the code for your example:

<html lang="en">
    <head>
        <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous">
        <script src="https://code.jquery.com/jquery-3.1.1.slim.min.js" integrity="sha384-A7FZj7v+d/sdmMqp/nOQwliLvUsJfDHW+k9Omg/a/EheAdgtzNs3hpfag6Ed950n" crossorigin="anonymous"></script>
        <script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js" integrity="sha384-DztdAPBWPRXSA/3eYEEUWrWCy7G5KFbe8fFjk5JAIxUYHKkDx6Qin1DkWx51bBrb" crossorigin="anonymous"></script>
        <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js" integrity="sha384-vBWWzlZJ8ea9aCX4pEW3rVHjgjt7zpkNpZk+02D9phzyeVkE+jo0ieGizqPLForn" crossorigin="anonymous"></script>
    </head>
    <body>
        <div class="input-group mb-3">
            <div class="custom-file">
                <input type="file" class="custom-file-input" id="inputGroupFile02"/>
                <label class="custom-file-label" for="inputGroupFile02">Choose file</label>
            </div>
            <div class="input-group-append">
                <button class="btn btn-primary">Upload</button>
            </div>
        </div>
        <script>
            $('#inputGroupFile02').on('change',function(){
                //get the file name
                var fileName = $(this).val();
                //replace the "Choose a file" label
                $(this).next('.custom-file-label').html(fileName);
            })
        </script>
    </body>
</html>

这篇关于bootstrap 4 文件输入不显示文件名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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