Ext JS 3：从文件上传字段获取数据

Question

我在 Ext JS 3.3.1 中使用 Ext.ux.FileUploadField。我需要从表单中获取文件数据。有谁知道在不提交表格的情况下是否可以这样做？我可以看到文件名，但看不到文件数据...

谢谢。

Answer 1

// get a handle to the FileUploadField component (e.g. by ID)
var fp = Ext.getCmp('fileUploadField');

//add a handler to FileUploadField's fileselected event
fp.on('fileselected', this.onFileUploadFieldFileSelected, this);



// 'fileselected' event handler
onFileUploadFieldFileSelected : function(fp, fileName) {
    // get a handle to the selected file
    var selectedFile = fp.fileInput.dom.files[0];

    // read the contents of the file using FileReader and display content here
}