spee.ch/views/partials/publishForm-Channel.handlebars

<!-- select whether to publish anonymously or in a channel -->
<div class="row row--padded row--short row--wide">
    <div class="column column--10">
        <form>
            <div class="column column--3 column--med-10">
                <input type="radio" name="anonymous-or-channel" id="anonymous-radio" class="input-radio" value="anonymous" {{#unless user}}checked {{/unless}} onchange="toggleChannel(event.target.value)"/>
                <label class="label label--pointer" for="anonymous-radio">Anonymous</label>
            </div><div class="column column--7 column--med-10">
                <input type="radio" name="anonymous-or-channel" id="channel-radio" class="input-radio" value="in a channel" {{#if user}}checked {{/if}} onchange="toggleChannel(event.target.value)"/>
                <label class="label label--pointer" for="channel-radio">In a channel</label>
            </div>
        </form>
    </div>
</div>

<div id="channel-select-options" {{#unless user}}hidden="true"{{/unless}}>
    <div class="row row--padded row--no-top row--no-bottom row--wide">
        <!--error display-->
        <p id="input-error-channel-select" class="info-message-placeholder info-message--failure"></p>
        <!--channel login/create select-->
        <div class="column column--3">
            <label class="label" for="channel-name-select">Channel:</label>
        </div><div class="column column--7">
            <select type="text" id="channel-name-select" class="select select--arrow" onchange="toggleSelectedChannel(event.target.selectedOptions[0].value)">
            {{#if user}}
                <option value="{{user.channelName}}" id="publish-channel-select-channel-option">{{user.channelName}}</option>
            {{/if}}
                <option value="login">Existing</option>
                <option value="new" >New</option>
            </select>
        </div>
    </div>
    <!-- log into an existing channel -->
    <div id="channel-login-details" class="row row--padded row--short row--wide" {{#if user}}hidden="true"{{/if}}>
        {{> channelLoginForm}}
    </div>
    <!-- create a channel -->
    <div  id="channel-create-details" class="row row--padded row--short row--wide" hidden="true">
        {{> channelCreationForm}}
    </div>
</div>

<script type="text/javascript">
    // show or hide the channel selection tools
    function toggleChannel (selectedOption) {
        const channelSelectOptions = document.getElementById('channel-select-options');
        // show/hide the login and new channel forms
        if (selectedOption === 'anonymous') {
            channelSelectOptions.hidden = true;
            channelSelectOptions.hidden = true;
            // update url
            updateUrl(selectedOption);
        } else if (selectedOption === 'in a channel') {
            channelSelectOptions.hidden = false;
            // update url
            let selectedChannel = document.getElementById('channel-name-select').selectedOptions[0].value
            toggleSelectedChannel(selectedChannel);
        } else {
            console.log('selected option was not recognized');
        }

    }
    // show or hide the channel create/login tool
    function toggleSelectedChannel (selectedChannel) {
         const createChannelTool = document.getElementById('channel-create-details');
         const loginToChannelTool = document.getElementById('channel-login-details');
         // show/hide the login and new channel forms
         if (selectedChannel === 'new') {
             createChannelTool.hidden = false;
             loginToChannelTool.hidden = true;
         } else if (selectedChannel === 'login') {
             loginToChannelTool.hidden = false;
             createChannelTool.hidden = true;
         } else {
             // hide the login and new channel forms
             loginToChannelTool.hidden = true;
             createChannelTool.hidden = true;
             validationFunctions.hideError(document.getElementById('input-error-channel-select'));
         }
        // update url
        updateUrl(selectedChannel);
    }
    function updateUrl (selectedOption) {
        const urlChannel = document.getElementById('url-channel');
        const urlNoChannelPlaceholder = document.getElementById('url-no-channel-placeholder');
        const urlChannelPlaceholder = document.getElementById('url-channel-placeholder');
        if (selectedOption === 'new' || selectedOption === 'login' || selectedOption === ''){
            urlChannel.hidden = true;
            urlNoChannelPlaceholder.hidden = true;
            urlChannelPlaceholder.hidden = false;
        } else if (selectedOption === 'anonymous'){
            urlChannel.hidden = true;
            urlNoChannelPlaceholder.hidden = false;
            urlChannelPlaceholder.hidden = true;
        } else {
            urlChannel.hidden = false;
            // show channel and short id
            const selectedChannel = getCookie('channel_name');
            const shortChannelId = getCookie('short_channel_id');
            urlChannel.innerText = `${selectedChannel}:${shortChannelId}`;
            urlNoChannelPlaceholder.hidden = true;
            urlChannelPlaceholder.hidden = true;
        }
    }
</script>