如何使用 jquery 显示自定义样式输入文件的文件名？

Question

我使用 CSS 设置了文件输入的样式：

.custom-file-upload {
  border: 1px solid #ccc;
  display: inline-block;
  padding: 6px 12px;
  cursor: pointer; 
}

<form>
  <label for="file-upload" class="custom-file-upload">
    <i class="fa fa-cloud-upload"></i> Upload Image
  </label>
  <input id="file-upload" name='upload_cont_img' type="file" style="display:none;">
</form>

一切正常，但我想显示选定的文件名。这怎么可能使用 CSS 或 jQuery?

Answer 1

文件名可以这样取

$('#file-upload')[0].files[0].name

Answer 2

上传按钮样式

input[type="file"] {
    display: none;
}
.custom-file-upload {
    border: 1px solid #ccc;
    display: inline-block;
    padding: 6px 12px;
    cursor: pointer;
}

<label for="file-upload" class="custom-file-upload">
    <i class="fa fa-cloud-upload"></i> Custom Upload
</label>
<input id="file-upload" type="file"/>

Answer 3

您也可以使用它来上传多个文件

updateList = function() {
  var input = document.getElementById('file');
  var output = document.getElementById('fileList');

  output.innerHTML = '<ul>';
  for (var i = 0; i < input.files.length; ++i) {
    output.innerHTML += '<li>' + input.files.item(i).name + '</li>';
  }
  output.innerHTML += '</ul>';
}

<input type="file" name="file" id="file" multiple 
       onchange="javascript:updateList()" />
<br/>Selected files:
<div id="fileList"></div>

Answer 4

您必须在 [type=file] 元素上绑定并触发更改事件，并将文件名读取为：

$('#file-upload').change(function() {
  var i = $(this).prev('label').clone();
  var file = $('#file-upload')[0].files[0].name;
  $(this).prev('label').text(file);
});

.custom-file-upload {
  border: 1px solid #ccc;
  display: inline-block;
  padding: 6px 12px;
  cursor: pointer;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form>
  <label for="file-upload" class="custom-file-upload">
    <i class="fa fa-cloud-upload"></i> Upload Image
  </label>
  <input id="file-upload" name='upload_cont_img' type="file" style="display:none;">
</form>

Answer 5

您需要在输入更改时获取文件名并将其插入html。在代码中 this.files[0].name 获取所选文件的名称。

$("#file-upload").change(function(){
  $("#file-name").text(this.files[0].name);
});

$("#file-upload").change(function(){
  $("#file-name").text(this.files[0].name);
});

.custom-file-upload {
    border: 1px solid #ccc;
    display: inline-block;
    padding: 6px 12px;
    cursor: pointer; 
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form>
    <label for="file-upload" class="custom-file-upload">
        <i class="fa fa-cloud-upload"></i> Upload Image
    </label>
    <input id="file-upload" name='upload_cont_img' type="file" style="display:none;">
    <label id="file-name"></label>
</form>

您也可以使用 pure javascript

完成这项工作

document.querySelector("#file-upload").onchange = function(){
  document.querySelector("#file-name").textContent = this.files[0].name;
}

document.querySelector("#file-upload").onchange = function(){
  document.querySelector("#file-name").textContent = this.files[0].name;
}

.custom-file-upload {
  border: 1px solid #ccc;
  display: inline-block;
  padding: 6px 12px;
  cursor: pointer; 
}

<form>
  <label for="file-upload" class="custom-file-upload">
    <i class="fa fa-cloud-upload"></i> Upload Image
  </label>
  <input id="file-upload" name='upload_cont_img' type="file" style="display:none;">
  <label id="file-name"></label>
</form>

Answer 6

我已经破解了很长时间，希望对您有所帮助，您可能需要根据自己的喜好调整样式

HTML

<form>
  <label for="file-upload" class="custom-file-upload">
    <i class="fa fa-cloud-upload"></i> Upload Image
  </label>
  <input id="file-upload" name='upload_cont_img' type="file"     style="display:none;">
  <input id="uploadFile" placeholder="No File" disabled="disabled" />
</form>

CSS

.custom-file-upload {
  border: 1px solid #ccc;
  display: inline-block;
  padding: 6px 12px;
  cursor: pointer;
}

#uploadFile {
  text-align: center;
  border: none;
  background-color: white;
  color: black;
}

JavaScript

document.getElementById("file-upload").onchange = function() {
  document.getElementById("uploadFile").value = this.value;
};

JSFiddle link:https://jsfiddle.net/kd1brhny/

Answer 7

由于浏览器不断更新 CSS 修复并非对所有浏览器都有效，请使用 JavaScript 版本解决上述问题。

解决方案 1

CSS 片段

.wrap-file_upload{position:relative; display:inline-block;}
.wrap-file_upload .btn_colorlayer,.wrap-file_upload:hover .btn_colorlayer{position: absolute; left: 102%; padding-left: 8px; max-width: 120px; white-space: nowrap;text-overflow: ellipsis; overflow: hidden; color:#d7263d;top: 50%; margin-top: -8px; text-transform: none; pointer-events:none; }
.wrap-file_upload input[type="file"]{opacity: 0; height:40px; display: inline; position: absolute; left: 0; top: 0; width: 230px; bottom: 0;}
.wrap-file_upload .btn_lbl{pointer-events: none;}

JavaScript 片段

function _updatename(obj){
    var _parentObj = $(obj).parents("[data-uploadfield]");
    _parentObj.addClass("wrap-file_upload");
    if(!_parentObj.find(".btn_colorlayer").length){
        _parentObj.append("<span class='btn_colorlayer'></span>")
    }
    var _tempname = "";
    if( $(obj).val() != "" && typeof( $(obj).val())!='undefined'){
        _tempname =  $(obj).val().split('\');
        _tempname = _tempname[_tempname.length-1];
    }

    var _name = _tempname ||  $(obj).parents("[data-uploadfield]").attr("data-uploadfield") || "No file chosen";
    _parentObj.find(".btn_colorlayer").attr("title",_name).text(_name);
}

if($("[data-uploadfield]").length){
    $("[data-uploadfield]").each(function(i){
        _updatename($(this).find("input[type='file']"));
    });
}

$(document).on("click","[data-uploadfield] input[type='file']",function(){
    _updatename($(this));
});

$(document).on("change","[data-uploadfield] input[type='file']",function(){
    _updatename($(this));
});

//  Enable Custom Control for Ajax called pages
$( document ).ajaxComplete(function(event,request,settings){
    if($("[data-uploadfield]").length){
        _updatename("[data-uploadfield] input[type='file']");
    }
});

解决方案 2

对于CSS唯一的解决方案

.file_upload {
  position: relative;
  min-width: 90px;
  text-align: center;
  color: #ee3333;
  line-height: 25px;
  background: #fff;
  border: solid 2px #ee3333;
  font-weight: 600;
}

a.file_upload {
  display: inline-block;
}

.file_upload .btn_lbl {
  position: relative;
  z-index: 2;
  pointer-events: none;
}

.file_upload .btn_colorlayer {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: #fff;
  z-index: 1;
  pointer-events: none;
}

.file_upload input[type="file"] {
  position: absolute;
  top: 3px;
  left: -86px;
  font-weight: 600;
  margin-left: 100%;
  color: #ee3333;
  outline: none;
}

<button class="file_upload" type="button">
      <span class="btn_lbl">Browse</span>
      <span class="btn_colorlayer"></span>
      <input type="file" name="fileupload" id="file_upload" />
    </button>

如何使用 jquery 显示自定义样式输入文件的文件名？

How to display file name for custom styled input file using jquery?

html

javascript

css

jquery

input-field

解决方案 1

解决方案 2