官方文档   http://plugins.krajee.com/

demo      http://plugins.krajee.com/file-input-ajax-demo/3

github资源   https://github.com/kartik-v/bootstrap-fileinput

html  

<input id="input-700" name="kartik-input-700[]" type="file" multiple class="file-loading">  <!-- 必须的 -->
<div id="kv-error-1" style="margin-top:10px;display:none"></div>
<div id="kv-success-1" class="alert alert-success fade in" style="margin-top:10px;display:none"></div>

js

<link rel="stylesheet" href="http://www.mamicode.com/libs/bootstrap-fileinput-4.4.3/css/fileinput.min.css">

<script src="http://www.mamicode.com/libs/bootstrap-fileinput-4.4.3/js/fileinput.min.js"></script>
<script src="http://www.mamicode.com/libs/bootstrap-fileinput-4.4.3/js/locales/zh.js"></script>

<script>

$("#input-700").fileinput({
uploadUrl: rootPath+‘  ‘, // server upload action
language:‘zh‘,
minFileCount: 0,
uploadAsync: true,
maxFileCount: 10,
enctype: ‘multipart/form-data‘,
maxFileSize:5120,//限制上传大小KB
// overwriteInitial: false,//不覆盖已上传的图片
allowedPreviewTypes:[‘image‘, ‘html‘, ‘text‘, ‘video‘, ‘audio‘, ‘flash‘,‘object‘],
// allowedFileExtensions: [‘jpg‘, ‘png‘, ‘gif‘],//可以可选择的违建格式
// elErrorContainer: ‘#kv-error-1‘,//错误显示的文本continner
showBrowse: true,
browseOnZoneClick: true,
ajaxSettings:{
contentType:false
}
}).on("filepredelete", function(jqXHR) {
var abort = true;
if (confirm("Are you sure you want to delete this image?")) {
abort = false;
}
return abort; // you can also send any data/object that you can receive on `filecustomerror` event
}).on(‘filebatchpreupload‘, function(event, data) {
var n = data.files.length, files = n > 1 ? n + ‘ files‘ : ‘one file‘;
if (!window.confirm("确定上传选择的文件吗 ?")) {
return {
message: "上传失败!", // upload error message
data:{} // any other data to send that can be referred in `filecustomerror`
};
}
}).on(‘fileuploaded‘, function(event, data, id, index) {//上传成功之后的处理
console.log(data)
inputFiles.push(data.response.data.id[0]);
var fname = data.files[index].name,
out = ‘<li>‘ + ‘文件 # ‘ + (index + 1) + ‘ - ‘ +
fname + ‘ 上传成功！‘ + ‘</li>‘;
$(‘#kv-success-1 ul‘).append(out);
$(‘#kv-success-1‘).fadeIn(‘slow‘);
}).on(‘filebatchpreupload‘, function(event, data, id, index) {
$(‘#kv-success-1‘).html(‘<h4>上传状态</h4><ul></ul>‘).hide();
})

</script>

 　　　　赋值html js 引入css 、js  即可见效果

bootstrap file input 实现多图上传功能