Tooltip

index.html

<div rool='tooltip' class='tooltip' id='tooltip'>
  Jing Han
  <div rool='tooltip text' class='tooltip__text' id="tooltipText">
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  </div>
</div>

script.js

function e(id) {return document.getElementById(id);}

const tooltip = e('tooltip');
const tooltipText = e('tooltipText');
const url = 'https://www.googleapis.com/books/v1/volumes?q=flowers';

tooltip.onmouseover = hoverHandler;


function hoverHandler() {
  fetch(url)
  .then(function(res) {
    return res.json();
  })
  .then(function(myJson) {
    console.log(myJson.items[0].volumeInfo);
    
  })
  .catch(function(err) {
    console.log(err);
  })
}

style.css

.tooltip {
  display: inline-block;
  position: relative;
  border: 1px solid red;
  margin: 150px;
}

.tooltip .tooltip__text {
  width: 150px;
  height: 130px;
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translate(-50%, -5px);
  border: 1px solid green;
  visibility: hidden;
  opacity: 0;
  background-color: grey;
  color: white;
  text-align: center;
  transition: opacity 0.5s ease-in-out;
}

.tooltip .tooltip__text::after {
  content: "";
  display: block;
  border-color: grey transparent transparent transparent;
  border-style: solid;
  border-width: 5px;
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
}


.tooltip:hover .tooltip__text {
  visibility: visible;
  opacity: 1;
}

tooltip.markdown

Tooltip

A Pen by Mingkai Cao on CodePen.

License.