你如何风格输入类型=“文件”按钮?
<输入类型=“文件” />
当前回答
Jquery版本的teshguru脚本自动检测输入[文件]和样式
<html>
<head>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.7.2.min.js"></script>
<style>
#yourBtn{
position: relative;
top: 150px;
font-family: calibri;
width: 150px;
padding: 10px;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border: 1px dashed #BBB;
text-align: center;
background-color: #DDD;
cursor:pointer;
}
</style>
<script type="text/javascript">
$(document).ready(function()
{
$('input[type=file]').each(function()
{
$(this).attr('onchange',"sub(this)");
$('<div id="yourBtn" onclick="getFile()">click to upload a file</div>').insertBefore(this);
$(this).wrapAll('<div style="height: 0px;width: 0px; overflow:hidden;"></div>');
});
});
function getFile(){
$('input[type=file]').click();
}
function sub(obj){
var file = obj.value;
var fileName = file.split("\\");
document.getElementById("yourBtn").innerHTML = fileName[fileName.length-1];
}
</script>
</head>
<body>
<?php
var_dump($_FILES);
?>
<center>
<form action="" method="post" enctype="multipart/form-data" name="myForm">
<input id="upfile" name="file" type="file" value="upload"/>
<input type="submit" value='submit' >
</form>
</center>
</body>
</html>
其他回答
转换文件名的多个文件解决方案
自举例子
HTML:
<div>
<label class="btn btn-primary search-file-btn">
<input name="file1" type="file" style="display:None;"> <span>Choose file</span>
</label>
<span>No file selected</span>
</div>
<div>
<label class="btn btn-primary search-file-btn">
<input name="file2" type="file" style="display:None;"> <span>Choose file</span>
</label>
<span>No file selected</span>
</div>
1. jQuery JS:
$().ready(function($){
$('.search-file-btn').children("input").bind('change', function() {
var fileName = '';
fileName = $(this).val().split("\\").slice(-1)[0];
$(this).parent().next("span").html(fileName);
})
});
2. JS没有jQuery
Array.prototype.forEach.call(document.getElementsByTagName('input'), function(item) {
item.addEventListener("change", function() {
var fileName = '';
fileName = this.value.split("\\").slice(-1)[0];
this.parentNode.nextElementSibling.innerHTML = fileName;
});
});
我发现插件解决方案太笨重了，所以我制作了自己的jQuery插件Drolex FileStyle。
This plug-in allows you to style file input fields however you want. Actually, you style div elements to look like a tricked out file input, and the actual file input is automatically overlaid with 0% opacity. No additional HTML is required. Just include the css and js files in the page you want Drolex FileStyle and that's it! Edit the css file to your liking. Don't forget the jQuery library if your page doesn't already have it. If the client does not run JavaScript, then the file input will not be modified by js or css.
测试工作在Chrome 24, Firefox 18, Internet Explorer 9。 预计可以在之前的版本中使用。
下载:http://web.drolex.net/Drolex-FileStyle.zip。
这是一个纯CSS，无javascript，无bootstrap, 100%跨浏览器的解决方案!只需剪切粘贴一个样式块，然后测试您的文件上传控制。
这个解决方案不像其他文章那样试图隐藏然后重新创建原始HTML元素。它使用纯CSS，没有任何马戏团技巧或第三方工具，为所有主要浏览器设置原始文件上传表单控件的样式。你甚至不需要改变你的HTML代码!只需剪切并粘贴下面的代码到你的网页来测试它…
<style>
/* Note: This CSS will style all instances of
<input type=file /> controls in your website. */
input[type="file"],
input[type="file"]:visited,
input[type="file"]:hover,
input[type="file"]:focus,
input[type="file"]:active {
margin:0;
padding: 0em 0em;/* fallback: older browsers like IE 1-8 need "em" */
padding: 0rem 0rem;/* older browsers dont know what "rem" is */
overflow: hidden; /* long file names overflow so just hide the end */
background: #fff;
border-radius: .2em;
border-radius: .2rem;
outline: none;
border: 2px solid #bbb;
cursor: pointer;
-webkit-appearance: textfield;
-moz-appearance: textfield;
}
input[type="file"]:hover {
background: #f9f9ff; /* Optional rollover color: I am using a light blue to indicate an interaction */
border: 2px solid #999;
}
input[type="file"]:visited,
input[type="file"]:focus,
input[type="file"]:active {
background: #fff; /* Default back to white when focused. */
border: 2px solid #999;
}
/* Note: These "disabled" selectors blow up in IE so have to be separated from the same styles above. */
input[type="file"]:disabled {
margin: 0;
padding: 0em 0em;
padding: 0rem 0rem;
overflow: hidden; /* long file names overflow so just hide the end */
background: #ddd;
border-radius: .2em;
border-radius: .2rem;
outline: none;
border: 2px solid #bbb;
cursor: pointer;
-webkit-appearance: textfield;
-moz-appearance: textfield;
}
input[type="file"]:disabled:hover {
background: #ddd; /* disabled-readonly buttons should be grey */
border: 2px solid #999;
}
input[type="file"]:disabled:visited,
input[type="file"]:disabled:focus,
input[type="file"]:disabled:active {
background: #ddd; /* disabled-readonly buttons should be grey */
border: 2px solid #999;
}
/* IE UPLOAD BUTTON STYLE: This attempts to alter the file upload button style in IE. Keep in mind IE gives you limited design control but at least you can customize its upload button.*/
::-ms-browse { /* IE */
display: inline-block;
margin: 0;
padding: .2em .5em;
padding: .2rem .5rem;
text-align: center;
outline: none;
border: none;
background: #fff;
white-space: nowrap;
cursor: pointer;
}
/* FIREFOX UPLOAD BUTTON STYLE */
::file-selector-button {/* firefox */
display: inline-block;
margin: 0rem 1rem 0rem 0rem;
padding: .18em .5em;
padding: .18rem .5rem;
-webkit-appearance: button;
text-align: center;
border-radius: .1rem 0rem 0rem .1rem;
outline: none;
border: none;
border-right: 2px solid #bbb;
background: #eee;
white-space: nowrap;
cursor: pointer;
}
/* CHROME AND EDGE UPLOAD BUTTON STYLE */
::-webkit-file-upload-button { /* chrome and edge */
display: inline-block;
margin: 0rem 1rem 0rem 0rem;
padding: .19em .5em;
padding: .19rem .5rem;
-webkit-appearance: button;
text-align: center;
border-radius: .1rem 0rem 0rem .1rem;
outline: none;
border: none;
border-right: 2px solid #bbb;
background: #eee;
white-space: nowrap;
cursor: pointer;
}
</style>
<input type="file" id="fileupload" name="fileupload"
value="" tabindex="0" enctype="multipart/form-data"
accept="image/*" autocomplete="off" multiple="multiple"
aria-multiselectable="true" title="Multiple File Upload"
aria-label="Multiple File Upload" />
<br /><br />
<input disabled="disabled" type="file" id="fileupload"
name="fileupload" value="" tabindex="0"
enctype="multipart/form-data" accept="image/*"
autocomplete="off" multiple="multiple"
aria-multiselectable="true" title="Disabled Multiple File Upload"
aria-label="Disabled Multiple File Upload" />
这是文件上传控件在Firefox、Chrome和Edge中使用下面的CSS的样子。这是一个非常简单干净的设计。你可以把它变成你喜欢的样子:
Internet Explorer为您提供了有限的设计控制，但至少您可以使用CSS操作控件来更改一些东西，包括圆形边框和颜色:
我的解决方案的优点是:
You stick with simple CSS to style the original HTML input control You can see one or more file names in the file input textbox Screen readers and ARIA-friendly devices can interact normally with your file upload control You can set tabindex on your HTML element so its part of the tab order Because you are using plain HTML and CSS, your file input button works perfectly in old and new browsers ZERO JavaScript required! Runs and loads lighting fast in even the oldest of browsers Because your are not using "display:none" to hide the control, its file block stream data is never disabled from reaching the server in any old or new browser version known
你不需要愚蠢的JavaScript技巧，Bootstrap，或尝试隐藏/重新创建你的文件输入控件。这只会破坏所有在线用户的可用性。样式化原始HTML控件意味着你的文件上传控件在25年的新老浏览器中都能很好地工作。
This is why you cannot trust all these scripted hacks here that erase, rewrite, or destroy HTML just to try and recreate some visual experience. That shows that you do not understand how HTML is used or why its been around for 30 years practically unchanged. You should never try and rewrite HTML's native form control functionality. Why? There is more to using natural HTML in websites than just manipulation of markup for some forced visual experience. The trade-offs of limited visual design in these replaced HTML elements was designed that way for a reason.
我的建议是:坚持使用简单的HTML和CSS解决方案，作为web开发人员，你将没有任何问题。
样式化文件输入是出了名的困难，因为大多数浏览器不会改变CSS或javascript的外观。
即使输入的大小也不会对以下内容做出反应:
<input type="file" style="width:200px">
相反，你需要使用size属性:
<input type="file" size="60" />
对于任何比这更复杂的样式(例如改变浏览按钮的外观)，你将需要考虑在本机文件输入上覆盖一个有样式的按钮和输入框的狡猾方法。rm在www.quirksmode.org/dom/inputfile.html上提到的那篇文章是我见过的最好的一篇。
更新
虽然直接对<input>标记设置样式很困难，但在<label>标记的帮助下，这很容易实现。请看下面来自@JoshCrozier的回答:https://stackoverflow.com/a/25825731/10128619
可能会有很多牛角。但我喜欢在纯CSS中使用fa-buttons:
.divs { position: relative; display: inline-block; background-color: #fcc; } .inputs { position:absolute; left: 0px; height: 100%; width: 100%; opacity: 0; background: #00f; z-index:999; } .icons { position:relative; } <div class="divs"> <input type='file' id='image' class="inputs"> <i class="fa fa-image fa-2x icons"></i> </div> <div class="divs"> <input type='file' id='book' class="inputs"> <i class="fa fa-book fa-5x icons"></i> </div> <br><br><br> <div class="divs"> <input type='file' id='data' class="inputs"> <i class="fa fa-id-card fa-3x icons"></i> </div> <link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet"/>
小提琴:https://jsfiddle.net/zoutepopcorn/v2zkbpay/1/
