Userscripts.org

I am new to JavaScript. I have a Description field on a form. I need some GreaseMonkey code to check if the field is empty, and if so, insert a template into the field. If it's not empty, I want to leave it alone. Is there code available to do this? Thank you.

Generally speaking, you should be able to do this. Note that you need a way to identify the particular form field, which depends on your particular page.

if (myFormField.value.length == 0){
  myFormField.value = "some big long chunk of text";
}

Thanks for your help. What I really want to do is -- See if this field is empty:

If it is, I want to insert some text in it:

I think part of it got cut off. It should be:

"

Does this work?

if (myTextarea.textLength == 0){
 myTextarea.textContent = "some big long chunk of text";
}

Note: there isn't enough information in your posts to set myTextarea.