Compare 3 JavaScript variables

Question

I only want to show unique variables. Is there an easier or cleaner way to compare three js variables?

if (a==b) {
  if (a==c) {
   //show only a
  } else {
    //show a and c
  }
} else {
  if (a==c) {
    //show a and b
  } else {
    //show a and b and c
  }
}

T.J. Crowder · Accepted Answer · 2016-10-21 10:29:54Z

1

Not really, no:

if (a == b && a == c) {
    // show a
} else if (a == b) {
    // show a and c
} else if (a == c) {
    // show a and b
} else {
    // show a, b, and c
}

answered Oct 21, 2016 at 10:29

T.J. Crowder

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1 Comment

Brad Over a year ago

At least this is a bit cleaner than mine! Thanks!

gkb · Accepted Answer · 2016-10-21 10:34:09Z

0

I know you have not specified to use jQuery, but this is another way you could do it (should you choose to use Jquery)

var array1 = [];
var a = 2, b = 3, c= 2;
array1.push(a);
array1.push(b);
array1.push(c);

console.log(array1);

var unique = $.unique(array1);

console.log(unique);

P.S. - I have considered the variables to be numbers.

answered Oct 21, 2016 at 10:34

gkb

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4 Comments

Brad Over a year ago

Thanks, I am using jQuery, but the variables are strings. Does $.unique() work on strings too?

gkb Over a year ago

As per the documentation - api.jquery.com/jQuery.unique, it does not, but as per this post - stackoverflow.com/questions/10191941/…, it might work..

T.J. Crowder Over a year ago

It isn't documented to support either strings or numbers. In fact, it's documented not to: "Sorts an array of DOM elements, in place, with the duplicates removed. Note that this only works on arrays of DOM elements, not strings or numbers."

gkb Over a year ago

You are right @T.J.Crowder. Came to know about it later when I went through the doc again. Thanks..

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