Javascript 删除已在js中上载的文件
我有一个.js文件,你可以上传一个或多个文件。我还需要能够删除文件后,它已经上传。我还不太熟悉这个代码 以下是上传的代码:Javascript 删除已在js中上载的文件,javascript,extjs,extjs4,Javascript,Extjs,Extjs4,我有一个.js文件,你可以上传一个或多个文件。我还需要能够删除文件后,它已经上传。我还不太熟悉这个代码 以下是上传的代码: onChooseStepImageClicked: function(btn, e){ var form = btn.up('form'), grid = this.getGridProcess(), selectedRecord = grid.getSelectionModel().getLastSelected(), processid = se
onChooseStepImageClicked: function(btn, e){
var form = btn.up('form'),
grid = this.getGridProcess(),
selectedRecord = grid.getSelectionModel().getLastSelected(),
processid = selectedRecord.get('processid'),
win = Ext.create('Ext.window.Window',{
title:'Image',
modal:true, constrain:true, stateful:true,
width:600, height:400,
layout:'fit',
items:[
{
border:false,
xtype:'plupload',
_url : 'data/upload.processimagemap.php',
_resize : {width : 600, height : 600, quality : 90},
_unique_names : false,
_multi_selection : false,
_filters : [{title : "Image files", extensions : "jpg,jpeg,gif,png"}]
}
],
buttons:[
{text:'Upload', handler:function(btn){
var win = btn.up('window'),
uploader = win.down('plupload').uploader;
if (uploader.files && uploader.files.length > 0) {
uploader.settings.multipart_params = {processid:processid};
uploader.processid = processid;
uploader.form = form;
uploader.win = win;
uploader.bind('UploadComplete', function(up, files) {
up.form.doLoad(processid);
uploader.destroy();
up.win.close();
});
uploader.start();
}else{
Ext.Msg.alert('','Please select a file to upload.');
}
}},
{text:'Close', handler:function(){ win.close(); }}
],
listeners:{
beforeclose:function(win){
win.down('plupload').uploader.destroy();
}
}
});
win.show();
},
{
title:'Image',
layout: 'fit',
border: false,
items: {
disabled: (canEditProcess) ? false : true,
xtype:'form',
formId:'form_step_image',
tbar:[{iconCls:'image_add', text:'Choose Image', name:'choose_step_image'}, {iconCls:'image_add', text:'Remove Image', name:'remove_step_image'}],
border:false,
autoScroll:true,
bodyPadding:20,
items:[{xtype:'image', src:'', name:'step_image'}],
doLoad:function(processid){
var f = this, formImg = f.down('image');
f.getForm().load({
url:'data/load.processimage.php',
params:{processid: processid},
success:function(f,a){
var data = Ext.JSON.decode(a.response.responseText);
formImg.setSrc(data.data.image);
}
});
}
}
},
并已:
'button[name=choose_step_image]': {
click: this.onChooseStepImageClicked
},
'button[name=remove_step_image]': {
click: this.onRemoveStepImageClicked
},
我该如何删除刚上传的文件?
我还不太熟悉js,这有点高级:
谢谢看来你是在处理Ext.JS而不是Ember.JS?您是否有成功上传后可以返回的ID或文件名?如果您可以提供一个获取此参数集并调用后端以删除该文件(由其文件名/id标识)的方法…我还有按钮所在的代码,请参见OPI。我建议您更改标记并用extjs或extjs4替换ember.js。我猜您使用Ext.js 4,对吗?只是为了把你的问题标记正确。至于从何处获取文件名/id:后端被要求将图像存储在您发布的未命名对象的doLoad函数中。因此,如果您在成功操作时从后端返回上载图像的文件名/id,您可以在成功回调中访问它。。。