Question

I am using the jQuery Validation plugin

I want one of my fields to be a number, but it is not a required field.

The thing is, when I set number: true, it makes the field required. Why is that? I tried to add required: false with number: true, but to no avail.

This my code:

name : {
    required:false,
    number:true
}

I am not setting an error message, but it shows the default error message: “please enter a valid number.”

Answer 1

In the source code they are using this regex to validate a number:

/^-?(?:\d+|\d{1,3}(?:,\d{3})+)(?:\.\d+)?$/

When the field is empty( "" ), it does not pass the test:

/^-?(?:\d+|\d{1,3}(?:,\d{3})+)(?:\.\d+)?$/.test("")
//false