将元素在页面中隐藏的四种方法和区别
- display: none;
- display属性,规定了元素在页面上的显示方式
- display: none;时,对应元素从页面消失(不在占据位置)。
- visibility: hidden;
- visibility属性,指定一个元素的可见性
- visibility: hidden; 时,对应元素看不见摸不着(不能作为target触发事件),但是占据位置。
- 子元素会根据自己的visibility属性值来显示隐藏
- opciyt: 0;
- position: absolute; top=-9999px; left=-9999px
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
.box {
width: 100px;
height: 100px;
border: 1px solid #333;
visibility: hidden;
}
.box1 {
width: 100px;
height: 100px;
background-color: #333;
opacity: 0;
}
p {
visibility: visible;
opacity: 1;
}
</style>
</head>
<body>
<div class="box">
box
<p>子元素</p>
</div>
<div class="box1">
box1
<p>111</p>
</div>
<script>
const box = document.querySelector('.box')
box.addEventListener('mouseover', () => {
box.style.color = "red"
console.log('触发')
})
</script>
</body>
</html>