How can I display the checkbox over the images for selection?

Question

I want to display a checkbox for selection on the right bottom of every image..

How can i do something like this?

Please remember that clicking on image has a unique event(that i'll manage to do!) , but clicking on that check box should select/deselect that one?

Answer 1

You can use a "label" tag that contains an "img" tag inside.

Here's an example of using an image as a checkbox and radio.

* {
  font-family: Lato;
  margin: 0;
  padding: 0;
  --transition: 0.15s;
  --border-radius: 0.5rem;
  --background: #ffc107;
  --box-shadow: #ffc107;
}

.cont-bg {
  min-height: 100vh;
  background-image: radial-gradient(
    circle farthest-corner at 7.2% 13.6%,
    rgba(37, 249, 245, 1) 0%,
    rgba(8, 70, 218, 1) 90%
  );
  padding: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.cont-title {
  color: white;
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.cont-main {
  display: flex;
  flex-wrap: wrap;
  align-content: center;
  justify-content: center;
}

.cont-checkbox {
  width: 150px;
  height: 100px;
  border-radius: var(--border-radius);
  box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
  background: white;
  transition: transform var(--transition);
}

.cont-checkbox:first-of-type {
  margin-bottom: 0.75rem;
  margin-right: 0.75rem;
}

.cont-checkbox:active {
  transform: scale(0.9);
}

input {
  display: none;
}

input:checked + label {
  opacity: 1;
  box-shadow: 0 0 0 3px var(--background);
}

input:checked + label img {
  -webkit-filter: none; /* Safari 6.0 - 9.0 */
  filter: none;
}

input:checked + label .cover-checkbox {
  opacity: 1;
  transform: scale(1);
}

input:checked + label .cover-checkbox svg {
  stroke-dashoffset: 0;
}

label {
  display: inline-block;
  cursor: pointer;
  border-radius: var(--border-radius);
  overflow: hidden;
  width: 100%;
  height: 100%;
  position: relative;
  opacity: 0.6;
}

label img {
  width: 100%;
  height: 70%;
  object-fit: cover;
  clip-path: polygon(0% 0%, 100% 0, 100% 81%, 50% 100%, 0 81%);
  -webkit-filter: grayscale(100%); /* Safari 6.0 - 9.0 */
  filter: grayscale(100%);
}

label .cover-checkbox {
  position: absolute;
  right: 5px;
  top: 3px;
  z-index: 1;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--box-shadow);
  border: 2px solid #fff;
  transition: transform var(--transition),
    opacity calc(var(--transition) * 1.2) linear;
  opacity: 0;
  transform: scale(0);
}

label .cover-checkbox svg {
  width: 13px;
  height: 11px;
  display: inline-block;
  vertical-align: top;
  fill: none;
  margin: 5px 0 0 3px;
  stroke: #fff;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 16px;
  transition: stroke-dashoffset 0.4s ease var(--transition);
  stroke-dashoffset: 16px;
}

label .info {
  text-align: center;
  margin-top: 0.2rem;
  font-weight: 600;
  font-size: 0.8rem;
}

<div class="cont-bg">
  <div class="cont-title">Checkbox</div>
  <div class="cont-main">
    <div class="cont-checkbox">
      <input type="checkbox" id="myCheckbox-1" />
      <label for="myCheckbox-1">
        <img
          src="https://hips.hearstapps.com/hmg-prod.s3.amazonaws.com/images/2021-mazda-mx-5-miata-mmp-1-1593459650.jpg?crop=0.781xw:0.739xh;0.109xw,0.0968xh&resize=480:*"
        />
        <span class="cover-checkbox">
          <svg viewBox="0 0 12 10">
            <polyline points="1.5 6 4.5 9 10.5 1"></polyline>
          </svg>
        </span>
        <div class="info">Mazda MX-5 Miata</div>
      </label>
    </div>
    <div class="cont-checkbox">
      <input type="checkbox" id="myCheckbox-2" />
      <label for="myCheckbox-2">
        <img
          src="https://hips.hearstapps.com/hmg-prod.s3.amazonaws.com/images/2020-chevrolet-corvette-c8-102-1571146873.jpg?crop=0.548xw:0.411xh;0.255xw,0.321xh&resize=980:*"
        />
        <span class="cover-checkbox">
          <svg viewBox="0 0 12 10">
            <polyline points="1.5 6 4.5 9 10.5 1"></polyline>
          </svg>
        </span>
        <div class="info">Toyota Supra</div>
      </label>
    </div>
  </div>
  <div class="cont-title">Radio</div>
  <div class="cont-main">
    <div class="cont-checkbox">
      <input type="radio" name="myRadio" id="myRadio-1" />
      <label for="myRadio-1">
        <img
          src="https://hips.hearstapps.com/hmg-prod.s3.amazonaws.com/images/2021-mazda-mx-5-miata-mmp-1-1593459650.jpg?crop=0.781xw:0.739xh;0.109xw,0.0968xh&resize=480:*"
        />
        <span class="cover-checkbox">
          <svg viewBox="0 0 12 10">
            <polyline points="1.5 6 4.5 9 10.5 1"></polyline>
          </svg>
        </span>
        <div class="info">Mazda MX-5 Miata</div>
      </label>
    </div>
    <div class="cont-checkbox">
      <input type="radio" name="myRadio" id="myRadio-2" />
      <label for="myRadio-2">
        <img
          src="https://hips.hearstapps.com/hmg-prod.s3.amazonaws.com/images/2020-chevrolet-corvette-c8-102-1571146873.jpg?crop=0.548xw:0.411xh;0.255xw,0.321xh&resize=980:*"
        />
        <span class="cover-checkbox">
          <svg viewBox="0 0 12 10">
            <polyline points="1.5 6 4.5 9 10.5 1"></polyline>
          </svg>
        </span>
        <div class="info">Toyota Supra</div>
      </label>
    </div>
  </div>
</div>

Answer 2

This can be done with pure CSS, assuming you have fixed width and height for all images. The trick is setting absolute position for the checkbox then assign bottom and right to zero.

HTML sample:

<div class="container">
    <img src="image1.jpg" /> 
    <input type="checkbox" class="checkbox" id="check1" />
</div>
<div class="container">
    <img src="image2.jpg" />
    <input type="checkbox"  class="checkbox" id="check2" />
</div>

CSS:

.container { position: relative; width: 100px; height: 100px; float: left; margin-left: 10px; }
.checkbox { position: absolute; bottom: 0px; right: 0px; }

Live test case.

As for click events, just apply click handler to each checkbox and it will work just fine.. see in this updated fiddle.