#62 - Upvote Button v0.2

Add upvote functionality to the Webflow CMS.

View demo project
View demo

<!-- 💙 MEMBERSCRIPT #62 v0.2 💙 UPVOTE FORM -->
<script> 
  document.addEventListener('DOMContentLoaded', function() {
    const memberstack = window.$memberstackDom;
    const upvoteButtons = document.querySelectorAll('[ms-code="upvote-button"]');
    const upvoteForms = document.querySelectorAll('[ms-code="upvote-form"]');
    const upvotedValues = document.querySelectorAll('[ms-code="upvoted-value"]');
    const upvoteCounts = document.querySelectorAll('[ms-code="upvote-count"]');
    let clickTimeout; // Variable to store the timer
    let lastClickedButton = null; // Variable to store the last clicked button

    // Function to handle upvote button click
    function handleUpvoteButtonClick(event) {
      event.preventDefault();
      const button = event.currentTarget;

      // Clear the timer if the same button is clicked
      if (button === lastClickedButton) {
        clearTimeout(clickTimeout);
      }
      
      lastClickedButton = button; // Store the reference to the currently clicked button

      // Set a new timer
      clickTimeout = setTimeout(function() {
        const form = button.closest('form');
        const cmsId = button.getAttribute('data-cms-id');
        const upvotedValue = form.querySelector('[ms-code="upvoted-value"]');
        const upvoteCount = form.querySelector('[ms-code="upvote-count"]');

        if (button.classList.contains('is-true')) {
          // Remove upvote
          button.classList.remove('is-true');
          upvotedValue.value = 'false';
          upvoteCount.textContent = parseInt(upvoteCount.textContent) - 1;

          memberstack.getMemberJSON()
            .then(function(memberData) {
              if (memberData.data && memberData.data.upvotes) {
                const upvotes = memberData.data.upvotes;
                const index = upvotes.indexOf(cmsId);
                if (index !== -1) {
                  upvotes.splice(index, 1);
                  memberstack.updateMemberJSON({ json: memberData.data });
                }
              }
            })
            .catch(function(error) {
              console.error('Error retrieving/updating member data:', error);
            });
        } else {
          // Add upvote
          button.classList.add('is-true');
          upvotedValue.value = 'true';
          upvoteCount.textContent = parseInt(upvoteCount.textContent) + 1;

          memberstack.getMemberJSON()
            .then(function(memberData) {
              memberData.data = memberData.data || {};
              memberData.data.upvotes = memberData.data.upvotes || [];
              memberData.data.upvotes.push(cmsId);
              memberstack.updateMemberJSON({ json: memberData.data });
            })
            .catch(function(error) {
              console.error('Error retrieving/updating member data:', error);
            });
        }

        // Make the API call
        fetch(form.action, {
          method: form.method,
          headers: {
            'Content-Type': 'application/x-www-form-urlencoded'
          },
          body: new URLSearchParams(new FormData(form))
        })
          .then(function(response) {
            if (response.ok) {
              // Handle successful API response
              return response.json();
            } else {
              // Handle API error
              throw new Error('API Error');
            }
          })
          .then(function(data) {
            // Handle API response to update vote count
            upvoteCount.textContent = data.upvoteCount; // Replace with the actual property holding the updated vote count
          })
          .catch(function(error) {
            console.error('API Error:', error);
          });
      }, 200); // 0.2 seconds
    }

    // Attach event listeners to upvote buttons
    upvoteButtons.forEach(function(button) {
      button.addEventListener('click', handleUpvoteButtonClick);
    });

    // Check if member has upvotes on page load
    memberstack.getMemberJSON()
      .then(function(memberData) {
        if (memberData.data && memberData.data.upvotes) {
          const upvotes = memberData.data.upvotes;
          upvoteButtons.forEach(function(button) {
            const cmsId = button.getAttribute('data-cms-id');
            if (upvotes.includes(cmsId)) {
              button.classList.add('is-true');
              const form = button.closest('form');
              const upvotedValue = form.querySelector('[ms-code="upvoted-value"]');
              upvotedValue.value = 'true';
            }
          });
        }
      })
      .catch(function(error) {
        console.error('Error retrieving member data:', error);
      });
  });
</script>

Creating the Make.com Scenario

1. Download the JSON blueprint below to get stated.

2. Navigate to Make.com and Create a New Scenario...

3. Click the small box with 3 dots and then Import Blueprint...

4. Upload your file and voila! You're ready to link your own accounts.

Need help with this MemberScript?

All Memberstack customers can ask for assistance in the 2.0 Slack. Please note that these are not official features and support cannot be guaranteed.

Join the 2.0 Slack
Version notes

v0.2 - Prevent Rage Clicking

I've updated the script to only send the upvote click event after 0.2 seconds. You can adjust the time if needed, but I find this is enough time to prevent spamming the button while still feeling responsive.

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