Applying the same randomized array index value to two different variables

Question

So basically this is what I'm trying to do. My code runs an AJAX get request on some external JSON data that's stored in arrays (as you can see below).

My code works great.

However I want to apply the same random value on the actual entry number that it's retrieving for both variable sa and ss.

var sa = (index.Of['10']['blah:blah'].label + ' ');
var ss = (index.Of['10']['blah:blah'].label);
var sS = (sa +  ss);

So I can do this with one variable with no issue, in the following code by doing it this way.

var sa = (index.Of[Math.floor(Math.random() * 10) + 1]['blah:blah'].label + ' ');
var ss = (index.Of[Math.floor(Math.random() * 10) + 1]['blah:blah'].label);
var sS = (sa +  ss);

BUT the issue is that I don't know of a way to apply the same math.floor randomization array value to both variables.

I'm stumped.

If you want Math.floor(Math.random() * 10) to be the same every time, just use let rand = 1 + Math.random() * 10 | 0 and use the rand variable in place of Math.floor…. — royhowie
– royhowie, Commented Nov 17, 2015 at 6:22

Yeldar Kurmangaliyev · Accepted Answer · 2015-11-17 06:14:47Z

1

You can randomize a value once, save it to a variable and reuse:

var rand = Math.floor(Math.random() * 10) + 1;

var sa = (index.Of[rand]['blah:blah'].label + ' ');
var ss = (index.Of[rand]['blah:blah'].label);
var sS = (sa +  ss);

answered Nov 17, 2015 at 6:14

Yeldar Kurmangaliyev

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jeff carey · Accepted Answer · 2015-11-17 06:14:52Z

0

var r = Math.floor(Math.random() * 10) + 1;
var sa = (index.Of[r]['blah:blah'].label + ' ');
var ss = (index.Of[r]['blah:blah'].label);
var sS = (sa +  ss);

?

answered Nov 17, 2015 at 6:14

jeff carey

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1 Comment

wmk Over a year ago

Can you explain a bit to make your answer more useful for others?

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