Question

I have some input HTML elements which I want to validate whether they are filled up or not. Basically, they are mandatory. I am doing something like this:

    var displayNames new Array();
    displayNames[0] = "Name";
    displayNames[1] = "Address";
    displayNames[2] = "Age";

function validForm() {
    var Name = document.getElementById(txtName).value;
    if(!Name) {
      alert(displayName[0] is required);
    }}

How should I make the validations easy in JS?

Answer 1

How should I make the validations easy in JS?

It depends. Are they all strings? Or can some be numbers? Or some in need of a regex (like an email address)? Heck, can some even be an empty string or blank?

If we are talking about less than 12 fields, then I would consider rolling my own validation. However, if we are talking a lot of fields spread across multiple pages and projects then I would consider using the a validation plugin such as http://bassistance.de/jquery-plugins/jquery-plugin-validation/