extjs 限制上传文件类型_如何让extjg 支持选择多文件上传

2、添加渲染完组件后事件；

,supportMultFn: function($this){

//2.1 为input添加支持多文件选择属性

var typeArray = ["application/x-shockwave- flash","audio/MP3","image/*","flv-application/octet-stream"];

var fileDom = $this.getEl().down('input[type=file]');

fileDom.dom.setAttribute("multiple","multiple");

fileDom.dom.setAttribute("accept",typeArray.join(","));

}

,listeners: {

afterrender: function(){

//2.2 渲染后重写

this.supportMultFn(this);

},

change: function(){

//2.3 获取文件列表

var fileDom = this.getEl().down('input[type=file]');

var files = fileDom.dom.files;

var fileArr = [];

for(var i = 0; i

fileArr.push((i+1)+"、文件名："+files[i].name+",类型:"+files[i].type+",大小:"+files[i].size/1024+"KB");

}

alert(fileArr.join("\n\n"));

//files[0].name / files[0].type / files[0].size

//2.4 选择完后input会还原美迪网，所以还需要再次重写

this.supportMultFn(this);

}

}