Greeting with Habdlebars - js

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examples/handlebars/handlebars_greeting.js

function say_hi() {
    var fname = document.getElementById('first_name').value;
    var lname = document.getElementById('last_name').value;

    var source   = document.getElementById('text-template').innerHTML;
    var template = Handlebars.compile(source);
    var context = {first_name: fname, last_name: lname};
    var html    = template(context);

    document.getElementById('result').innerHTML = html;
}

document.getElementById('say').addEventListener('click', say_hi);