What is the best way to preserve the allocated space in the DOM while utilizing CSS display:none?

Question

What is the best way to preserve the allocated space in the DOM while utilizing CSS display:none?

I have explored the functionalities of display:none and visibility:hidden. However, I need to utilize display:none for a specific reason while still preserving the element's allocated space in the DOM to prevent any impact on adjacent elements. Is this achievable?

This question follows up on the issue identified with the display:none property. You can refer to the original question HERE

UPDATE: As per T.J. Crowder's request, all relevant details from my initial query are provided here.

How can I incorporate a smooth fade effect into my function for more seamless animation instead of toggling visibility hidden / visible at regular intervals?

I am not interested in using plugins or adding the jQuery UI library.

My JS :

setBlinkingInterval: function(elem, event) {
    if (intervalIdForBlinking != 0) 
        window.clearInterval(intervalIdForBlinking);

    $(elem).show();
    intervalIdForBlinking = setInterval(function() {
       if (eventsObj.eventIsFinished(event)) {
          timer.setClosedStatus(elem, event);
       }
       else {
          if (elem.css('visibility') == 'hidden') 
             elem.css('visibility', 'visible');
         else 
             elem.css('visibility', 'hidden');
       }
   }, 500);
}

Update 1: HTML markup included for better understanding of one answer.

$('<span/>')
            .append('<div id="closing_blink" class="yellowText" style="display:none;">' + closing + '&nbsp;</div>')
            .append(date.formatFullDate(new Date(event.timeUtc)) + timezone)
            .append('<br/>')
            .append((weatherInfo != '' && trackInfo != '') ? '<div class="whiteText">' + weather + '</div>' + '<div class="orangeText">' + weatherInfo + '</div>' + '&nbsp;' + '<div class="whiteText">' + track + '</div>' + '<div class="orangeText">' + trackInfo + '</div>' : '')
            .appendTo(rightTd);

Upon implementing solutions based on the given answers, I encountered display issues when viewed on the page.

Case 1: Using the original solution (works fine)

Screen recording link HERE

Case 2: Utilizing the fade in/out method (Display issue)

Screen recording link HERE

Case 3: Employing the toggle method (Display issue)

Screen recording link HERE

Is there a quick fix available to resolve the display issue?

Here is the complete HTML generated by a JS function drawRaceHead: function(event) {

// Setting all race numbers back to default values
styling.makeAllRaceNumbersUnselected();

// Making the current race number active (including Racing Specials)
styling.makeCurrentEventNumberSelected(event)

// Race information
$("#raceInfo").html('');
$("#raceInfo").append($('<table/>').append($('<tr/>')))
var leftTd = $('<td style="width: 295px"/>')
        .appendTo($('#raceInfo')),
    rightTd = $('<td/>')
        .appendTo($('#raceInfo'));
// If not under Racing Specials category
if (event.parentCategoryId != 2863) leftTd.html(raceFullName + '&nbsp;' + event.name)
else leftTd.html(event.name);

$('<div id="closing_time" style="display:none"/>')
    .appendTo(leftTd)

// Date, time, weather, track
var weatherInfo = '', trackInfo = '';
if (event.markets.length > 0) {
    weatherInfo = (event.markets[0].weather == null) ? '-' : event.markets[0].weather;
    trackInfo = (event.markets[0].track == null) ? '-' : event.markets[0].track;
}

var isMSIE = /*@cc_on!@*/false;
var ieVersion = (function(reg) { return isMSIE && navigator.userAgent.match(reg) ? RegExp.$1 * 1 : null; })(/MSIE\s([0-9]+[\.0-9]*)/);

if (isMSIE && ieVersion < 11) {
    timezone = '';
}
else {
    var regExp = /\(([^)]+)\)/, timezone = (regExp.exec(new Date)[1]).split(' ')[0];
    timezone = ' (' + timezone + ')';
}

$('<span/>')
    .append('<div id="closing_blink" class="yellowText" style="display:none;">' + closing + '&nbsp;</div>')
    .append(date.formatFullDate(new Date(event.timeUtc)) + timezone)
    .append('<br/>')
    .append((weatherInfo != '' && trackInfo != '') ? '<div class="whiteText">' + weather + '</div>' + '<div class="orangeText">' + weatherInfo + '</div>' + '&nbsp;' + '<div class="whiteText">' + track + '</div>' + '<div class="orangeText">' + trackInfo + '</div>' : '')
    .appendTo(rightTd);

},

javascript jquery css

Answer 1

Answer №1

Please note: This answer includes various sections derived from the original post updates.

When hiding elements in your code, consider using visibility: hidden instead of display: none. By doing this, the element remains hidden but still occupies space within the layout.

To see the distinction, compare the jsbins here with this link, showcasing the use of display: none and visibility: hidden respectively.

Both examples utilize the following HTML structure:

<div>This is above</div>
<div id="toggleme">This is the toggleable element</div>
<div>This is below</div>

The first snippet employs:

(function() {
  "use strict";
  var toggleme = document.getElementById("toggleme");
  setInterval(function() {
    if (toggleme.style.visibility === "hidden") {
      toggleme.style.visibility = "";
    } else {
      toggleme.style.visibility = "hidden";
    }
  }, 400);
});

whereas the second uses:

(function() {
  "use strict";
  var toggleme = document.getElementById("toggleme");
  setInterval(function() {
    if (toggleme.style.display === "none") {
      toggleme.style.display = "block";
    } else {
      toggleme.style.display = "none";
    }
  }, 400);
});

In a comment, you mentioned using fadeOut to hide an element. This sets display: none when completed. To achieve a similar effect as visibility: hidden, consider using fadeTo which animates the opacity down to 0: View Example

<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>
<meta charset=utf-8 />
<title>fadeTo</title>
</head>
<body>
<div>This is above</div>
<div id="hideme">This is the toggleable element</div>
<div>This is below</div>
  <script>
    $("#hideme").fadeTo("slow", 0);
  </script>
</body>
</html>

Alternatively, you can use the "complete" callback on fadeOut to adjust both display and visibility: View Live Demo

$("#hideme").fadeOut(function() {
  $(this).css({
    display: "",
    visibility: "hidden"
  });
});

If you are looking to integrate these techniques into your own code, consider simplifying it by adapting the following snippet: Live Sample

<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>
<meta charset=utf-8 />
<title>Faded Blinking Effect</title>
</head>
<body>
<div>This is above</div>
<div id="toggleme">This is the toggleable element</div>
<div>This is below</div>
<input type="button" id="btnStartStop" value="Start">
  <script>
    (function() {
      var obj = {
        startBlinking: function($elem) {
          if ($elem.data("blinking")) {
            return;
          }
          $elem.data("blinking", true);
          fadeToZero();

          function fadeToZero() {
            if ($elem.data("blinking")) {
              $elem.fadeTo("slow", 0, fadeToFull);
            }
          }
          function fadeToFull() {
            if ($elem.data("blinking")) {
              $elem.fadeTo("slow", 1, fadeToZero);
            }
          }
        },
        stopBlinking: function($elem) {
          $elem.data("blinking", false);
        }
      };

      $("#btnStartStop").click(function() {
        if (this.value === "Start") {
          obj.startBlinking($("#toggleme"));
          this.value = "Stop";
        } else {
          obj.stopBlinking($("#toggleme"));
          this.value = "Start";
        }
      })
    })();
  </script>
</body>
</html>

Answer 2

Please note: This answer includes various sections derived from the original post updates.

When hiding elements in your code, consider using visibility: hidden instead of display: none. By doing this, the element remains hidden but still occupies space within the layout.

To see the distinction, compare the jsbins here with this link, showcasing the use of display: none and visibility: hidden respectively.

Both examples utilize the following HTML structure:

<div>This is above</div>
<div id="toggleme">This is the toggleable element</div>
<div>This is below</div>

The first snippet employs:

(function() {
  "use strict";
  var toggleme = document.getElementById("toggleme");
  setInterval(function() {
    if (toggleme.style.visibility === "hidden") {
      toggleme.style.visibility = "";
    } else {
      toggleme.style.visibility = "hidden";
    }
  }, 400);
});

whereas the second uses:

(function() {
  "use strict";
  var toggleme = document.getElementById("toggleme");
  setInterval(function() {
    if (toggleme.style.display === "none") {
      toggleme.style.display = "block";
    } else {
      toggleme.style.display = "none";
    }
  }, 400);
});

In a comment, you mentioned using fadeOut to hide an element. This sets display: none when completed. To achieve a similar effect as visibility: hidden, consider using fadeTo which animates the opacity down to 0: View Example

<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>
<meta charset=utf-8 />
<title>fadeTo</title>
</head>
<body>
<div>This is above</div>
<div id="hideme">This is the toggleable element</div>
<div>This is below</div>
  <script>
    $("#hideme").fadeTo("slow", 0);
  </script>
</body>
</html>

Alternatively, you can use the "complete" callback on fadeOut to adjust both display and visibility: View Live Demo

$("#hideme").fadeOut(function() {
  $(this).css({
    display: "",
    visibility: "hidden"
  });
});

If you are looking to integrate these techniques into your own code, consider simplifying it by adapting the following snippet: Live Sample

<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>
<meta charset=utf-8 />
<title>Faded Blinking Effect</title>
</head>
<body>
<div>This is above</div>
<div id="toggleme">This is the toggleable element</div>
<div>This is below</div>
<input type="button" id="btnStartStop" value="Start">
  <script>
    (function() {
      var obj = {
        startBlinking: function($elem) {
          if ($elem.data("blinking")) {
            return;
          }
          $elem.data("blinking", true);
          fadeToZero();

          function fadeToZero() {
            if ($elem.data("blinking")) {
              $elem.fadeTo("slow", 0, fadeToFull);
            }
          }
          function fadeToFull() {
            if ($elem.data("blinking")) {
              $elem.fadeTo("slow", 1, fadeToZero);
            }
          }
        },
        stopBlinking: function($elem) {
          $elem.data("blinking", false);
        }
      };

      $("#btnStartStop").click(function() {
        if (this.value === "Start") {
          obj.startBlinking($("#toggleme"));
          this.value = "Stop";
        } else {
          obj.stopBlinking($("#toggleme"));
          this.value = "Start";
        }
      })
    })();
  </script>
</body>
</html>

Answer 3

Answer №2

To achieve the desired outcome, implement the following CSS:

.hidemeplease {
    display:none;
}

Answer 4

To achieve the desired outcome, implement the following CSS:

.hidemeplease {
    display:none;
}

What is the best way to preserve the allocated space in the DOM while utilizing CSS display:none?

Answer №1

Answer №2

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