Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

JavaScript DOM Scripting By Example Improving the Application Code Refactor 1: Create List Items

Brian Johnson
.a{fill-rule:evenodd;}techdegree seal-36
Brian Johnson
Front End Web Development Techdegree Graduate 20,806 Points

Please help me see what i am doing wrong here! my code seems to match his.

//Please check this out and let me know what i missed thanks

document.addEventListener('DOMContentLoaded', () => { //Use this EVERYTIME YOU START JAVASCRIPT CODING
    const form = document.getElementById('registrar');
    const input = form.querySelector('input');

    const mainDiv = document.querySelector('.main');
    const ul = document.getElementById('invitedList');

    const div = document.createElement('div');
    const filterLabel = document.createElement('label');
    const filterCheckbox = document.createElement('input');

    filterLabel.textContent = "Hide those who haven't responded";
    filterCheckbox.type = 'checkbox';
    mainDiv.insertBefore(div, ul);
    filterCheckbox.addEventListener('change', (e) =>{
        const isChecked = e.target.checked;
        const lis = ul.children;
            for(let i = 0; i < lis.length; i += 1){
                let li = lis[i];
                if(li.className === 'responded'){
                    li.style.display = '';
                    li.style.display = 'none';
            for(let i = 0; i < lis.length; i += 1){
                let li = lis[i];
                li.style.display = '';

    function createLi(text) {
        function createElement(elementName, property, value) {
            const element = document.createElement(elementName);
            element[property] = value; 
            return element;

    function appendToLi(elementName, property, value){
            const element = createElement(elementName, property, value);
            return element;

        const li = document.createElement('li');
        appendToLi('span', 'textContext', text);
        appendToLi('label', 'textContent', 'Confirmed')
         .appendToLi(createElement('input', 'type', 'checkbox'));
        appendToLi('button', 'textContent', 'edit');//created a edit button to edit an invitee
        appendToLi('button', 'textContent', 'remove');//created a remove button to remove an invitee
        return li;

    form.addEventListener('submit', (e) => {
        e.preventDefault(); // call the prevent default method on the event object referred to by the (e) parameter 
        const text = input.value; //assign the input value into a variable called text
        input.value = ''; // clears the input field back after you user clicks or enters the input value 
        const li = createLi(text);

    //adding a delegated handler that marks guest off when they responded to our user's RSVPs
    ul.addEventListener('change', (e)=>{
    const checkbox = event.target;
    const checked = checkbox.checked;
    //change the class of the list item when the checkbox is checked
    //first grab a reference tp the list item ** its the checkbox's grandparent because the label is a child of the list item
    const listItem = checkbox.parentNode.parentNode;
        listItem.className = 'responded'
    } else{
        listItem.className = '';

    // user can edit, save & remove names once a particular button is clicked
    ul.addEventListener('click', (e)=>{
        if (e.target.tagName === 'BUTTON'){
            const button = e.target;   
            const li = button.parentNode;
            const ul = li.parentNode;
            if(button.textContent === 'remove'){
            } else if (button.textContent === 'edit'){
                const span = li.firstElementChild;
                const input = document.createElement('input');
                input.type = 'text';
                input.value = span.textContent;
                li.insertBefore(input, span);
                button.textContent = 'save';
            } else if (button.textContent === 'save'){
                const input = li.firstElementChild;
                const span = document.createElement('span');
                span.textContent = input.value;
                li.insertBefore(span, input);
                button.textContent = 'edit';
Steven Parker
Steven Parker
208,478 Points

To facilitate a complete replication of your issue, make a snapshot of your workspace and post the link to it here.

It would also help if you describe what the issue is you are experiencing.