javascript + nodejs login not working

I'm trying to make a login page that takes the username and password entered and uses them in windows command line. When I test it in its current state, I get "Uncaught ReferenceError: login is not defined" in console.

Here is the code that I am using

<script>
// create the object that will hold the input values
    var formValues = {};
    function inputObj(formNR, defaultValues) {
      var inputs = formNR.getElementsByTagName('input');
      for ( var i = 0; i < inputs.length; i++) {
        formValues[inputs[i].name] = defaultValues[i];
        if(inputs[i].type === 'text' || inputs[i].type === 'password') {
          inputs[i].value = defaultValues[i];
          document.getElementById(inputs[i].name).innerHTML = defaultValues[i];
        }
        inputs[i].addEventListener('keyup', function() {
          formValues[this.name] = this.value;
          document.getElementById(this.name).innerHTML = this.value;
        }, false);
      }
    }
    // build a little array with the defaultValues for each input
    var defValues =['',''];
    // this will push all inputs from the given form in the formValues object.
    inputObj(document.forms[0], defValues);
    //now lets test the input against cli
    function login()
    {
    var adminname = "-adminname" + " " + formValues.user; //the username 
    var password  = "-password" + " " + formValues.pass;  //the password
    var testlogin = "-c" + " " + "testlogin";        //the action/command to be performed (see below)
    var exec = require('child_process').exec, child; 
    
    child = exec('adminname + password + testlogin',
    function (error, stdout, stderr) {
        console.log('stdout: ' + stdout);
        console.log('stderr: ' + stderr);
        if (error !== null) {
             console.log('exec error: ' + error);
        }
    });
 child();
      }
    }
</script>

      <div class="single-widget-container">
            <section class="widget login-widget">
                <header class="text-align-center">
                    <h4>Login to your account</h4>
                </header>
                <div class="body">
                    <form class="no-margin"
                          action="" onsubmit="login()" method="get">
                        <fieldset>
                            <div class="form-group">
                                <div class="input-group">
                                    <span class="input-group-addon">
                                        <i class="fa fa-user"></i>
                                    </span>
                                    <input name="user" type="text" class="form-control input-lg"
                                           placeholder="Username">
                                </div>
                            </div>
                            <div class="form-group">
                                <div class="input-group input-group-lg">
                                    <span class="input-group-addon">
                                        <i class="fa fa-lock"></i>
                                    </span>
                                    <input name="pass" type="password" class="form-control input-lg"
                                           placeholder="Password">
                                </div>
                            </div>
                        </fieldset>
                        <div class="form-actions">
                            <button type="submit" class="btn btn-block btn-lg btn-danger">
                                <span class="small-circle"><i class="fa fa-caret-right"></i></span>
                                <small>Sign In</small>
                            </button>
                            <a class="forgot" href="#">Forgot Username or Password?</a>
                        </div>
                    </form>
                </div>
                <footer>
                    <div class="facebook-login">
                        <a href="#"><span><i class="fa fa-copyright"></i> 2015</span></a>
                    </div>
                </footer>
            </section>
        </div>
        <h3>Results</h3>

formValues.user = <span id="user"></span><br>

formValues.pass = <span id="pass"></span><br>

Not totally sure what I'm doing wrong here. Any help is appreciated.