Shopify Buy Button - Out of Stock wording

[AdageJewelry]

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<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.0/jquery.min.js"></script>

Hello,

I would like to change the wording of "Out of Stock" to "Coming Soon" or even to "Pre-order". 

I would like for the button to open up a link (our contact page on the website), if the items are out of stock. 

I tried to modify the code but I couldn't find where I should change it. 

I've put an example of the code. I only see the lines for "add to cart" and "Subtotal". 

[RococoDigital]

I had this same issue.

the button text section requires an extra value:

"text": {
      "button": "Add to cart",
      "outOfStock": 'Coming Soon'
    }

[thatgriffith]

Wow, this really works. Can't believe there is no doc for this. Or maybe there is, but I haven't found it yet.