Question

this might be a stupid question, but it’s got me stumped

I have a varying number of text input forms on a webpage named user1, user2, user3, etc. I want to access the values of these forms in a javascript function to check the form input. Normally I’d do that via:

document.submitForm.user1.value

However, since I have the total number of fields stored in a variable, I’d like to go through all of the forms in a for loop.

for(i=1;i<=numFields;i++)
{
  var firstUser = document.submitForm.user[i].value
}

However I’m not sure how to substitute the value of i into the statement where I put the [i]. How would I go about doing that/is there a better way to do this?

Thanks

Answer 1

The user1 property of submitForm can also be accessed with submitForm['user1'], which allows you to do this:

for (var i = 1; i <= numFields; i++) {
  var firstUser = document.submitForm['user' + i].value;
  // ...
}