Sign up system with Meteor --> https://github.com/LeCoupa/awesome-cheatsheets

meteor.signup.html

<template name="SignUp">

    <form action="/sign-up" id="signUpForm" method="post">
        <input id="signUpEmail" name="email" placeholder="Email Address" type="text" >
        <input id="signUpPassword" name="password" placeholder="Password" type="password">
        <input id="signUpPasswordConfirm" name="password-confirm" placeholder="Confirm" type="password">
        <input class="btn-submit" type="submit" value="Join Meteorites!">
    </form>
    <!-- end #sign-up-form -->

</template>

meteor.signup.js

Template.SignUp.events({
  'submit #signUpForm': function(e, t) {
    e.preventDefault();

    var signUpForm = $(e.currentTarget),
        email = trimInput(signUpForm.find('#signUpEmail').val().toLowerCase()),
        password = signUpForm.find('#signUpPassword').val(),
        passwordConfirm = signUpForm.find('#signUpPasswordConfirm').val();

    if (isNotEmpty(email) && isNotEmpty(password) && isEmail(email) && areValidPasswords(password, passwordConfirm)) {

      Accounts.createUser({email: email, password: password}, function(err) {
        if (err) {
          if (err.message === 'Email already exists. [403]') {
            console.log('We are sorry but this email is already used.');
          } else {
            console.log('We are sorry but something went wrong.');
          }
        } else {
          console.log('Congrats new Meteorite, you\'re in!');
        }
      });

    }
    return false;
  },
});