http://markusslima.github.io/bootstrap-filestyle/

$(":file").filestyle();

OR

<input type="file" class="filestyle" data-input="false">

关于claviska的答案-如果你想在一个基本的文件上传中显示上传的文件名，你可以在输入的onchange事件中这样做。只需使用以下代码:

 <label class="btn btn-default">
                    Browse...
                    <span id="uploaded-file-name" style="font-style: italic"></span>
                    <input id="file-upload" type="file" name="file"
                           onchange="$('#uploaded-file-name').text($('#file-upload')[0].value);" hidden>
 </label>

这个jquery JS代码负责检索上传的文件名:

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

或者用香草JS:

document.getElementById("file-upload").value

设置上传按钮的样式很麻烦，因为它设置的是输入的样式而不是按钮的样式。

但是你可以用这个技巧:

http://www.quirksmode.org/dom/inputfile.html

简介:

Take a normal <input type="file"> and put it in an element with position: relative. To this same parent element, add a normal <input> and an image, which have the correct styles. Position these elements absolutely, so that they occupy the same place as the <input type="file">. Set the z-index of the <input type="file"> to 2 so that it lies on top of the styled input/image. Finally, set the opacity of the <input type="file"> to 0. The <input type="file"> now becomes effectively invisible, and the styles input/image shines through, but you can still click on the "Browse" button. If the button is positioned on top of the image, the user appears to click on the image and gets the normal file selection window. (Note that you can't use visibility: hidden, because a truly invisible element is unclickable, too, and we need the to remain clickable)

这是珍妮的自举叉里的。

可以使用。创建简单的上传按钮

<span class="btn btn-file">Upload<input type="file" /></span>

使用fileupload插件，您可以创建更高级的小部件。看一看 http://jasny.github.io/bootstrap/javascript/#fileinput

／* *引导3文件样式 * http://dev.tudosobreweb.com.br/bootstrap-filestyle/ ＊ *版权所有(c) 2013 Markus Vinicius da Silva Lima *更新引导3保罗恩里克福克斯 * 2.0.0版本 *根据MIT许可证授权。 ＊ * /

(function ($) {
"use strict";

var Filestyle = function (element, options) {
    this.options = options;
    this.$elementFilestyle = [];
    this.$element = $(element);
};

Filestyle.prototype = {
    clear: function () {
        this.$element.val('');
        this.$elementFilestyle.find(':text').val('');
    },

    destroy: function () {
        this.$element
            .removeAttr('style')
            .removeData('filestyle')
            .val('');
        this.$elementFilestyle.remove();
    },

    icon: function (value) {
        if (value === true) {
            if (!this.options.icon) {
                this.options.icon = true;
                this.$elementFilestyle.find('label').prepend(this.htmlIcon());
            }
        } else if (value === false) {
            if (this.options.icon) {
                this.options.icon = false;
                this.$elementFilestyle.find('i').remove();
            }
        } else {
            return this.options.icon;
        }
    },

    input: function (value) {
        if (value === true) {
            if (!this.options.input) {
                this.options.input = true;
                this.$elementFilestyle.prepend(this.htmlInput());

                var content = '',
                    files = [];
                if (this.$element[0].files === undefined) {
                    files[0] = {'name': this.$element[0].value};
                } else {
                    files = this.$element[0].files;
                }

                for (var i = 0; i < files.length; i++) {
                    content += files[i].name.split("\\").pop() + ', ';
                }
                if (content !== '') {
                    this.$elementFilestyle.find(':text').val(content.replace(/\, $/g, ''));
                }
            }
        } else if (value === false) {
            if (this.options.input) {
                this.options.input = false;
                this.$elementFilestyle.find(':text').remove();
            }
        } else {
            return this.options.input;
        }
    },

    buttonText: function (value) {
        if (value !== undefined) {
            this.options.buttonText = value;
            this.$elementFilestyle.find('label span').html(this.options.buttonText);
        } else {
            return this.options.buttonText;
        }
    },

    classButton: function (value) {
        if (value !== undefined) {
            this.options.classButton = value;
            this.$elementFilestyle.find('label').attr({'class': this.options.classButton});
            if (this.options.classButton.search(/btn-inverse|btn-primary|btn-danger|btn-warning|btn-success/i) !== -1) {
                this.$elementFilestyle.find('label i').addClass('icon-white');
            } else {
                this.$elementFilestyle.find('label i').removeClass('icon-white');
            }
        } else {
            return this.options.classButton;
        }
    },

    classIcon: function (value) {
        if (value !== undefined) {
            this.options.classIcon = value;
            if (this.options.classButton.search(/btn-inverse|btn-primary|btn-danger|btn-warning|btn-success/i) !== -1) {
                this.$elementFilestyle.find('label').find('i').attr({'class': 'icon-white '+this.options.classIcon});
            } else {
                this.$elementFilestyle.find('label').find('i').attr({'class': this.options.classIcon});
            }
        } else {
            return this.options.classIcon;
        }
    },

    classInput: function (value) {
        if (value !== undefined) {
            this.options.classInput = value;
            this.$elementFilestyle.find(':text').addClass(this.options.classInput);
        } else {
            return this.options.classInput;
        }
    },

    htmlIcon: function () {
        if (this.options.icon) {
            var colorIcon = '';
            if (this.options.classButton.search(/btn-inverse|btn-primary|btn-danger|btn-warning|btn-success/i) !== -1) {
                colorIcon = ' icon-white ';
            }

            return '<i class="'+colorIcon+this.options.classIcon+'"></i> ';
        } else {
            return '';
        }
    },

    htmlInput: function () {
        if (this.options.input) {
            return '<input type="text" class="'+this.options.classInput+'" style="width: '+this.options.inputWidthPorcent+'% !important;display: inline !important;" disabled> ';
        } else {
            return '';
        }
    },

    constructor: function () {
        var _self = this,
            html = '',
            id = this.$element.attr('id'),
            files = [];

        if (id === '' || !id) {
            id = 'filestyle-'+$('.bootstrap-filestyle').length;
            this.$element.attr({'id': id});
        }

        html = this.htmlInput()+
             '<label for="'+id+'" class="'+this.options.classButton+'">'+
                this.htmlIcon()+
                '<span>'+this.options.buttonText+'</span>'+
             '</label>';

        this.$elementFilestyle = $('<div class="bootstrap-filestyle" style="display: inline;">'+html+'</div>');

        var $label = this.$elementFilestyle.find('label');
        var $labelFocusableContainer = $label.parent();

        $labelFocusableContainer
            .attr('tabindex', "0")
            .keypress(function(e) {
                if (e.keyCode === 13 || e.charCode === 32) {
                    $label.click();
                }
            });

        // hidding input file and add filestyle
        this.$element
            .css({'position':'absolute','left':'-9999px'})
            .attr('tabindex', "-1")
            .after(this.$elementFilestyle);

        // Getting input file value
        this.$element.change(function () {
            var content = '';
            if (this.files === undefined) {
                files[0] = {'name': this.value};
            } else {
                files = this.files;
            }

            for (var i = 0; i < files.length; i++) {
                content += files[i].name.split("\\").pop() + ', ';
            }

            if (content !== '') {
                _self.$elementFilestyle.find(':text').val(content.replace(/\, $/g, ''));
            }
        });

        // Check if browser is Firefox
        if (window.navigator.userAgent.search(/firefox/i) > -1) {
            // Simulating choose file for firefox
            this.$elementFilestyle.find('label').click(function () {
                _self.$element.click();
                return false;
            });
        }
    }
};

var old = $.fn.filestyle;

$.fn.filestyle = function (option, value) {
    var get = '',
        element = this.each(function () {
            if ($(this).attr('type') === 'file') {
                var $this = $(this),
                    data = $this.data('filestyle'),
                    options = $.extend({}, $.fn.filestyle.defaults, option, typeof option === 'object' && option);

                if (!data) {
                    $this.data('filestyle', (data = new Filestyle(this, options)));
                    data.constructor();
                }

                if (typeof option === 'string') {
                    get = data[option](value);
                }
            }
        });

    if (typeof get !== undefined) {
        return get;
    } else {
        return element;
    }
};

$.fn.filestyle.defaults = {
    'buttonText': 'Escolher arquivo',
    'input': true,
    'icon': true,
    'inputWidthPorcent': 65,
    'classButton': 'btn btn-primary',
    'classInput': 'form-control file-input-button',
    'classIcon': 'icon-folder-open'
};

$.fn.filestyle.noConflict = function () {
    $.fn.filestyle = old;
    return this;
};

// Data attributes register
$('.filestyle').each(function () {
    var $this = $(this),
        options = {
            'buttonText': $this.attr('data-buttonText'),
            'input': $this.attr('data-input') === 'false' ? false : true,
            'icon': $this.attr('data-icon') === 'false' ? false : true,
            'classButton': $this.attr('data-classButton'),
            'classInput': $this.attr('data-classInput'),
            'classIcon': $this.attr('data-classIcon')
        };

    $this.filestyle(options);
});
})(window.jQuery);

我已经创建了一个自定义上传按钮，只接受图像，这可以根据您的要求修改。

希望这能有所帮助!!：）

(已使用的Bootstrap框架)

代码笔链接

HTML

<center>
 <br />
 <br />
 <span class="head">Upload Button Re-Imagined</span>
 <br />
 <br />
 <div class="fileUpload blue-btn btn width100">
   <span>Upload your Organizations logo</span>
   <input type="file" class="uploadlogo" />
 </div>
</center>

CSS

 .head {
   font-size: 25px;
   font-weight: 200;
 }

 .blue-btn:hover,
 .blue-btn:active,
 .blue-btn:focus,
 .blue-btn {
   background: transparent;
   border: solid 1px #27a9e0;
   border-radius: 3px;
   color: #27a9e0;
   font-size: 16px;
   margin-bottom: 20px;
   outline: none !important;
   padding: 10px 20px;
 }

 .fileUpload {
   position: relative;
   overflow: hidden;
   height: 43px;
   margin-top: 0;
 }

 .fileUpload input.uploadlogo {
   position: absolute;
   top: 0;
   right: 0;
   margin: 0;
   padding: 0;
   font-size: 20px;
   cursor: pointer;
   opacity: 0;
   filter: alpha(opacity=0);
   width: 100%;
   height: 42px;
 }


 /*Chrome fix*/

 input::-webkit-file-upload-button {
   cursor: pointer !important;
 }

JS

// You can modify the upload files to pdf's, docs etc
//Currently it will upload only images
$(document).ready(function($) {

  // Upload btn
  $(".uploadlogo").change(function() {
    readURL(this);
  });

  function readURL(input) {
    var url = input.value;
    var ext = url.substring(url.lastIndexOf('.') + 1).toLowerCase();
    if (input.files && input.files[0] && (ext == "png" || ext == "jpeg" || ext == "jpg" || ext == "gif" || ext == "svg")) {
      var path = $('.uploadlogo').val();
      var filename = path.replace(/^.*\\/, "");
      $('.fileUpload span').html('Uploaded logo : ' + filename);
      // console.log(filename);
    } else {
      $(".uploadlogo").val("");
      $('.fileUpload span').html('Only Images Are Allowed!');
    }
  }
});