Resource Hover Tooltip

Displaying information in a tooltip can come in handy when space is tight but information matters. When hovering over a resource cell, the onResourceHoverIn and onResourceHoverOut lifecycle events are triggered, which can be used to show/hide rich tooltips. Information and actions shown here won't clutter the main view, keep the timeline clean while still giving quick access to content that helps.

Do you want to learn more about customizing the resource header?  Take a look at this example →
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Demo

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Hover over a resource row in the Timeline to open a tooltip popup with scheduled hours — keeps the timeline view clean.

Code

mobiscroll.setOptions({
  locale:  ,
  theme: ' ',
  themeVariant: ' '
});

var tooltipElm = document.getElementById('demo-resource-info-popup');
var resourceAvatar = document.getElementById('demo-resource-info-avatar');
var resourceName = document.getElementById('demo-resource-info-name');
var resourceCost = document.getElementById('demo-resource-info-cost');
var resourceDate = document.getElementById('demo-resource-info-date');
var resourceTotal = document.getElementById('demo-resource-info-total');
var payButtonElm = document.getElementById('demo-resource-info-pay');

var hoveredResourceElm = null;
var currentResource = null;
var selectedDate = new Date();
var openTimer;
var closeTimer;

function getTotalHoursForResource(events, resourceId) {
  return events
    .filter(function (e) {
      return e.resource === resourceId;
    })
    .reduce(function (sum, e) {
      var start = new Date(e.start);
      var end = new Date(e.end);
      var hours = (end - start) / (1000 * 60 * 60);
      return sum + hours;
    }, 0);
}

function openTooltip(resource, target) {
  clearTimeout(closeTimer);
  clearTimeout(openTimer);

  // Delay opening the tooltip to avoid flickering
  openTimer = setTimeout(function () {
    var events = calendar.getEvents();
    var totalHours = getTotalHoursForResource(events, resource.id);

    currentResource = resource;
    hoveredResourceElm = target;

    resourceAvatar.src = resource.avatar;
    resourceName.textContent = resource.name;
    resourceCost.textContent = '$' + resource.cost;
    resourceDate.textContent = mobiscroll.formatDate('D DDD MMM YYYY', selectedDate);
    resourceTotal.textContent = totalHours + 'h, $' + totalHours * resource.cost;
    target.classList.add('mds-resource-info-hover');

    tooltip.position();
    tooltip.open();

    openTimer = null;
  }, 100);
}

// Close the tooltip with a delay to allow for hover interactions
function closeTooltip() {
  clearTimeout(openTimer);
  clearTimeout(closeTimer);
  closeTimer = setTimeout(function () {
    tooltip.close();
    closeTimer = null;
  }, 200);
}

var calendar = mobiscroll.eventcalendar('#demo-display-resource-information-on-hover', {
  clickToCreate:  ,
  dragToCreate:  ,
  dragToMove:  ,
  dragToResize:  ,
  eventDelete:  
  view: {
    timeline: {
      type: 'day',
      startTime: '07:00',
      endTime: '22:00',
    },
  },
  data: [
    {
      start: '2026-10-22T12:00',
      end: '2026-10-22T15:00',
      title: 'Repoint Brick Facade',
      resource: 'res1',
    },
    {
      start: '2026-10-22T09:00',
      end: '2026-10-22T12:00',
      title: 'Install Custom Wood Trim',
      resource: 'res3',
    },
    {
      start: '2026-10-22T14:00',
      end: '2026-10-22T18:00',
      title: 'Repair Steel Stair Treads',
      resource: 'res4',
    },
    {
      start: '2026-10-22T10:00',
      end: '2026-10-22T13:00',
      title: 'Pour and Finish Driveway Slab',
      resource: 'res6',
    },
    {
      start: '2026-10-22T11:00',
      end: '2026-10-22T16:00',
      title: 'Paint Interior Drywall',
      resource: 'res8',
    },
    {
      start: '2026-10-23T08:00',
      end: '2026-10-23T11:00',
      title: 'Block Wall Construction',
      resource: 'res1',
    },
    {
      start: '2026-10-23T14:00',
      end: '2026-10-23T16:00',
      title: 'Task 2',
      resource: 'Paver Installation',
    },
    {
      start: '2026-10-23T12:00',
      end: '2026-10-23T17:00',
      title: 'Install ceiling fan',
      resource: 'res2',
    },
    {
      start: '2026-10-23T10:00',
      end: '2026-10-23T14:00',
      title: 'Roof Beam Replacement',
      resource: 'res3',
    },
    {
      start: '2026-10-23T07:00',
      end: '2026-10-23T12:00',
      title: 'Custom Metalworks Creation',
      resource: 'res4',
    },
    {
      start: '2026-10-23T14:00',
      end: '2026-10-23T17:00',
      title: 'Pipe Welding',
      resource: 'res4',
    },
    {
      start: '2026-10-10T08:00',
      end: '2026-10-11T20:00',
      title: 'Leak Detection & Repair',
      resource: 'res5',
    },
    {
      start: '2026-10-23T13:00',
      end: '2026-10-23T17:00',
      title: 'Faucet & Sink Fitting',
      resource: 'res5',
    },
    {
      start: '2026-10-23T18:00',
      end: '2026-10-23T20:00',
      title: 'Drainage System Setup',
      resource: 'res5',
    },
    {
      start: '2026-10-23T09:00',
      end: '2026-10-23T13:00',
      title: 'Surface Polishing',
      resource: 'res6',
    },
    {
      start: '2026-10-23T08:00',
      end: '2026-10-23T10:00',
      title: 'Structural Steel Inspections',
      resource: 'res7',
    },
    {
      start: '2026-10-23T13:00',
      end: '2026-10-23T16:00',
      title: 'Metal Structure Assembly',
      resource: 'res7',
    },
    {
      start: '2026-10-23T17:00',
      end: '2026-10-23T19:00',
      title: 'Heavy Steel Beam Placement',
      resource: 'res7',
    },
    {
      start: '2026-10-23T09:00',
      end: '2026-10-23T12:00',
      title: 'Exterior House Painting',
      resource: 'res8',
    },
    {
      start: '2026-10-23T15:00',
      end: '2026-10-23T18:00',
      title: 'Deck Staining & Sealing',
      resource: 'res8',
    },
    {
      start: '2026-10-24T12:00',
      end: '2026-10-24T15:00',
      title: 'Troubleshoot Faulty Breaker',
      resource: 'res2',
    },
    {
      start: '2026-10-24T10:00',
      end: '2026-10-24T13:00',
      title: 'Frame Interior Partitions',
      resource: 'res3',
    },
    {
      start: '2026-10-24T16:00',
      end: '2026-10-24T20:00',
      title: 'Weld Structural Beam Connections',
      resource: 'res4',
    },
    {
      start: '2026-10-24T12:00',
      end: '2026-10-24T16:00',
      title: 'Apply Smooth Trowel Finish to Basement Floor',
      resource: 'res6',
    },
  ],
  resources: [
    {
      id: 'res1',
      name: 'Adam Miller',
      color: '#F39C12',
      profession: 'Mason',
      avatar: 'https://img.mobiscroll.com/demos/m1.png',
      cost: '15',
    },
    {
      id: 'res2',
      name: 'Emily Carter',
      color: '#76e083',
      profession: 'Electrician',
      avatar: 'https://img.mobiscroll.com/demos/f1.png',
      cost: '20',
    },
    {
      id: 'res3',
      name: 'James Brown',
      color: '#b13f49',
      profession: 'Carpenter',
      avatar: 'https://img.mobiscroll.com/demos/m2.png',
      cost: '18',
    },
    {
      id: 'res4',
      name: 'Daniel Wilson',
      color: '#e25dd2',
      profession: 'Welder',
      avatar: 'https://img.mobiscroll.com/demos/m3.png',
      cost: '22',
    },
    {
      id: 'res5',
      name: 'Benjamin Harris',
      color: '#7056ff',
      profession: 'Plumber',
      avatar: 'https://img.mobiscroll.com/demos/m4.png',
      cost: '20',
    },
    {
      id: 'res6',
      name: 'Olivia Anderson',
      color: '#56aaff',
      profession: 'Concrete Finisher',
      avatar: 'https://img.mobiscroll.com/demos/f2.png',
      cost: '15',
    },
    {
      id: 'res7',
      name: 'Emma Thompson',
      color: '#84852f',
      profession: 'Steelworker',
      avatar: 'https://img.mobiscroll.com/demos/f3.png',
      cost: '18',
    },
    {
      id: 'res8',
      name: 'Natalie Roberts',
      color: '#ff6e56',
      profession: 'Painter',
      avatar: 'https://img.mobiscroll.com/demos/f4.png',
      cost: '25',
    },
  ],
  renderResource: function (res) {
    return (
      '<div class="mbsc-flex">' +
      '<img class="mds-resource-info-avatar" src="' +
      res.avatar +
      '"/>' +
      '<div class="mds-resource-info-details">' +
      '<div class="mds-resource-info-title">' +
      res.name +
      '</div>' +
      '<div class="mds-resource-info-profession">' +
      res.profession +
      '</div>' +
      '</div>' +
      '</div>'
    );
  },
  onResourceHoverIn: function (args) {
    openTooltip(args.resource, args.target);
  },
  onResourceHoverOut: function (args) {
    args.target.classList.remove('mds-resource-info-hover');
    closeTooltip();
  },
  onPageChange: function (args) {
    selectedDate = args.firstDay;
  },
});

var tooltip = mobiscroll.popup('#demo-resource-info-popup', {
  display: 'anchored',
  showOverlay: false,
  touchUi: false,
  width: 280,
  onPosition: function (args, inst) {
    var popupElm = args.target.querySelector('.mbsc-popup');
    var rect = hoveredResourceElm.getBoundingClientRect();

    popupElm.style.top = rect.top - 10 + 'px';

    if (inst.s.rtl) {
      popupElm.style.right = window.innerWidth - rect.left + 10 + 'px';
    } else {
      popupElm.style.left = rect.right + 10 + 'px';
    }
    return false; // Prevent default positioning
  },
});

tooltipElm.addEventListener('mouseenter', function () {
  clearTimeout(closeTimer);
});

tooltipElm.addEventListener('mouseleave', function () {
  closeTooltip();
});

payButtonElm.addEventListener('click', function () {
  tooltip.close();
  mobiscroll.toast({
    message: currentResource.name + ' paid',
  });
});
  

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