Simple knockout application which can read a given Exceel sheet

actually i dont know how to read Excel file usingg java script. here is my plan.
1). i want to get the user selected file path to a observable variable called "selectedPath".
<input type="file" data-bind="selectedPath"></input>

2). <button data-bind="click:read"></button>
i want to have a read method in view model which read the file from given path and push data to an observable array.

eg-
this.read=function(){
//read data from excel which has 2 colums(id,country). while going through each row, need to push to an observable array.
self.countries.push([id:current row's id, country: current row's country]);
}

then i can show it display it using foreach binding.

thank you

actually i dont know how to read Excel file usingg java script. here is my plan.
1). i want to get the user selected file path to a observable variable called "selectedPath".
<input type="file" data-bind="selectedPath"></input>

2). <button data-bind="click:read"></button>
i want to have a read method in view model which read the file from given path and push data to an observable array.

eg-
this.read=function(){
//read data from excel which has 2 colums(id,country). while going through each row, need to push to an observable array.
self.countries.push([id:current row's id, country: current row's country]);
}

then i can show it display it using foreach binding.

thank you