Character Count from Fillable PDF?

[suzmosb]

I'm trying to make a smart order form and I'm stuck on a field. I'm pretty sure the answer is "Javascript" but I'm hilariously out of practice with that so I'm hoping you can help!

I need to calculate cost for a personalized item. The cost is based off the number of characters in a string.

So basically it looks like:

Personalization: [fillable text field here]

Character Count: [number of characters in Personalization field]

Total Cost: [$0.50*character count]

I can get the total cost (a simplified field notation) but is there a way to automatically generate the character count?

[try67 · Accepted solution]

Sure. Use this code as the custom calculation script of the Character Count field:

event.value = this.getField("Personalization").valueAsString.length;