Get array values in pairs javascript

Question

so I have an array in which I store values in pairs. I can't use an object because keys may repeat so I use an array instead.

This is how the array may look:

array = ['id1', 'id5', 'id9', 'id12', 'id2', 'id9', 'id1', 'id4'];

So I want to iterate through it and get all the pairs, so I can use them for another function:

var a = 'id1';
var b = 'id5';    
doStuffWithThePair(a, b);

var a = 'id9';
var b = 'id12';    
doStuffWithThePair(a, b);

var a = 'id2';
var b = 'id9';    
doStuffWithThePair(a, b);

var a = 'id1';
var b = 'id4';    
doStuffWithThePair(a, b);

I tried with for loops, using if(i%2 == 0) but it doesn't work. How can I make this? Thanks in advance!

What about that: for (var i = 0; i < array.length - 1; i=i+2) { doStuffWithThePair(array[i], array[i+1]) } ? — feeeper
– feeeper, Commented Jul 15, 2016 at 6:39
Realized that right after I submitted the question, if you want feel free answer it to I can mark it as correct for other to see it in the future! — ALSD Minecraft
– ALSD Minecraft, Commented Jul 15, 2016 at 6:42

feeeper · Accepted Answer · 2016-07-15 06:50:23Z

5

You can iterate through your array like this:

function doStuffWithThePair(a, b) {
    // your code is here.
    console.log(a, b);
}

var array = ['id1', 'id5', 'id9', 'id12', 'id2', 'id9', 'id1', 'id4'];
for (var i = 0; i < array.length - 1; i += 2) { 
    doStuffWithThePair(array[i], array[i + 1]);
}

edited Jul 15, 2016 at 6:50

answered Jul 15, 2016 at 6:43

feeeper

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Comments

gotnull · Accepted Answer · 2016-07-15 06:45:43Z

1

function doStuffWithThePair (x, y) {
  console.log("x: " + x + ", y: " + y);
}

var a = ['id1', 'id5', 'id9', 'id12', 'id2', 'id9', 'id1', 'id4'];
for (var i = 0; i < a.length - 1; i+=2) { 
  doStuffWithThePair(a[i], a[i+1]);
}

answered Jul 15, 2016 at 6:45

gotnull

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