title: How to automatically calculate the value of a text field in Adobe Acrobat with javascript based on the contents of another text field?
body: <p>I've got a fillable PDF form my client is using for taking orders. It includes a chart with various fields and multiple rows that all end in a "Subtotal" field. I want to automatically calculate this subtotal field so that the user does not have to punch in the currency themselves.</p>
  
  <p>The value of that field needs to be based off of another field. The user fills in this other field with the total quantity they want. I need to automatically take the quantity they enter and multiply it by a price that I set myself.</p>
  
  <p>How can I do this using javascript in Adobe Acrobat?</p>