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<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>
  <div id="one">
    display
    <p>display</p>
  </div>
  <div id="two">
    子元素visibility
    <a>子元素visibility</a>
  </div>
  <div id="three">
    opacity
    <span>子元素opacity</span>
  </div>
</body>
</html>
 
div {
  border: 1px solid red;
  height: 100px;
}
#one {
  display: none;
}
#two {
  visibility: hidden;
}
#three {
  opacity: 0;
}
a {
  visibility: visible;
}
span {
  opacity: 1;
}
 
let one = document.querySelector("#one")
let two = document.querySelector("#two")
let three = document.querySelector("#three")
one.onclick = function() {
  console.log("one")
}
two.onclick = function() {
  console.log("two")
}
three.onclick = function() {
  console.log("three")
}
Output 300px

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