JavaScript obtain the sample code of the table unit element in Form

// Get Form object

var Form = DOCUMENT.GetelementByid ('My_form');

// Username Input object user_name is the name property of the object

var username = form.user_name;

// Username is empty

username.value = '';

// User password Input object Password is the name attribute of the object

var password = form.password;

// User password is empty

password.value = ";