JavaScript Remove duplicates from text/array

Question

I want to remove lines in text based on duplicate keywords. The text goes something like this.

text1,abc,text2
text3,cde,text4
text5,abc,text6
text7,gfh,text8
text9,cde,text10

I want to make it into.

text1,abc,text2
text3,cde,text4
text7,gfh,text8

The idea is to take the text, split it based on lines and put it through 2 loops. Then comparing the two arrays it would remove duplicates from it. How can I do this?

Answer 1

Here's a jsFiddle that will remove duplicates in the middle column of your data array: http://jsfiddle.net/bonneville/xv90ypgf/

var sortedAr = ar.sort(sortOnMiddleText);
var noDupsAr = removeDups(sortedAr);

Firstly is sorts on the middle column, and then it removes the duplicates. The code is pure javascript but uses jQuery to display the results. (I would prefer to use javaScript forEach instead of the for loop but it is not supported on all browsers so you would need a polyfill.)