<input id="uploadFile" placeholder="Choose File" disabled="disabled" />
<div class="fileUpload btn btn-primary">
    <span>Your name</span>
    <input id="uploadBtn" type="file" class="upload" />
</div>

JS

document.getElementById("uploadBtn").onchange = function () {
    document.getElementById("uploadFile").value = this.value;
 };

更多的http://geniuscarrier.com/how-to-style-a-html-file-upload-button-in-pure-css/

使用<label>作为标题

<form enctype='multipart/form-data' action='/uploads.php' method=post>
<label for=b1>
    <u>Your</u> caption here
<input style='width:0px' type=file name=upfile id=b1
 onchange='optionalExtraProcessing(b1.files[0])'
 accept='image/png'>
</label>
</form>

这种工作不需要任何javascript。你可以随心所欲地把标签装饰成任何复杂程度。当您单击标签时，单击会自动重定向到文件输入。任何方法都可以使文件输入本身不可见。如果你想让标签看起来像一个按钮，有很多解决方案，例如:

label u {
    -webkit-appearance: button;
    -moz-appearance: button;
    appearance: button;

    text-decoration: none;
    color: initial;
}

在所有浏览器上都能完美工作，希望它也能为你工作。

HTML: <input type="file" class="custom-file-input">

CSS:

 .custom-file-input::-webkit-file-upload-button {
  visibility: hidden;
}
.custom-file-input::before {
  content: 'Select some files';
  display: inline-block;
  background: -webkit-linear-gradient(top, #f9f9f9, #e3e3e3);
  border: 1px solid #999;
  border-radius: 3px;
  padding: 5px 8px;
  outline: none;
  white-space: nowrap;
  -webkit-user-select: none;
  cursor: pointer;
  text-shadow: 1px 1px #fff;
  font-weight: 700;
  font-size: 10pt;
}
.custom-file-input:hover::before {
  border-color: black;
}
.custom-file-input:active::before {
  background: -webkit-linear-gradient(top, #e3e3e3, #f9f9f9);
}

更改内容:“选择一些文件”;里面有你想要的文本

如果不与firefox工作，然后使用这个而不是输入:

<label class="custom-file-input" for="Upload" >
</label>

<input id="Upload" type="file" multiple="multiple" name="_photos" accept="image/*" style="visibility: hidden">

<input id="uploadFile" placeholder="Choose File" disabled="disabled" />
<div class="fileUpload btn btn-primary">
    <span>Your name</span>
    <input id="uploadBtn" type="file" class="upload" />
</div>

JS

document.getElementById("uploadBtn").onchange = function () {
    document.getElementById("uploadFile").value = this.value;
 };

更多的http://geniuscarrier.com/how-to-style-a-html-file-upload-button-in-pure-css/

简单的

<label class="btn btn-primary">
  <i class="fa fa-image"></i> Your text here<input type="file" style="display: none;"  name="image">
</label>

[编辑片段]

<link href=“https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css” rel=“stylesheet”/> <link href=“https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css” rel=“stylesheet”/> <label class=“btn btn-primary”> <i class=“fa fa-image</i>”> 你的文本在这里<输入类型=“文件” 样式=“显示：无;” 名称=“图像”> </label>

只有CSS和bootstrap类

< =铁路”链接stylesheet " href = " https://cdn.jsdelivr.net/npm/bootstrap@4 6。0 /区/ css / min bootstrap。css”诚信=“sha384-B0vP5xmATw1 K9KRQjQERJvTumQW0nPEzvF6L - Z6nronJ3oUOFUFpCjEUQouq2 + l”crossorigin =“匿名”> <div class="col-md-4 inputting -group"> <输入类别=“form控制”类型=“文本”/> < div级= input-group-btn”> <标签for=“文件” <输入id=“文件”类型=“文件”/> < / div > < / div >