Removing duplicates while loading a combo in HTML using a txt file - html

Question

Below is my code to load the combo using a txt file:
$("#Combo1").change(function() {
$('#Combo2').empty();
$.ajax({
url: 'File.txt',
type: 'get',
success: function(txt){
var value = [];
var txtArray = txt.split('\n');
for (var i = 0; i < txtArray.length; i++)
{
var tmpData = txtArray[i].split(',');
if (!value[tmpData[1]])
{
value.push([tmpData[1]]);
value[tmpData[1]] = true;
}
}
$('#Combo2').empty();
$.each(value, function(i, p) {
$('#Combo2').append($('<option></option>').val(p).html(p));
});
}
})
});
$("#Combo1").trigger("change");
Here on change of Combo1, this will be called. The Ajax is used to read the content of File.txt File.txt has a "," seperated two columns, out of which I am willing to print coulmn2. Given below are the contents of File.TXT.
A,31JAN
B,25JAN
C,31JAN
D,6JAN
E,6JAN
I was to load the above dates in Combo2. With the above code, I am able to ignore 31JAN. But 6JAN is getting repeated. In short, the value which is given at the last row gets repeated. Rest is fine.

Answer 1

Try this:
var txt="A,31JAN\nB,25JAN\nC,31JAN\nD,6JAN\nE,6JAN";
var txtArray = txt.split('\n');
for (var i = 0; i < txtArray.length; i++)
txtArray[i] = txtArray[i].split(",").pop();
var value = txtArray.reduce(function(a,b){if(a.indexOf(b)<0)a.push(b);return a;},[]);
console.log(value); //returns array
Also, give this a read: https://stackoverflow.com/a/9229821/9920079 :)