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javascript - 在下面的所有 div 上使用 css 模糊效果

转载 作者:行者123 更新时间:2023-11-28 14:09:56 25 4
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我有一系列的 div,我想模糊所有底层的 div;不幸的是,我唯一得到的是模糊其类具有模糊效果的第一个 div

我希望 hello world 在我按下按钮时变得模糊;这不会发生,事实上当我按下按钮时,hello world 这个词保持不变

function on() {
var x = document.getElementsByClassName("overlay");
var y = document.getElementsByClassName("blur");
if ((x[0].style.display === "none") && (y[0].style.display === "none")) {
x[0].style.display = "block";
y[0].style.display = "block";
} else {
x[0].style.display = "none";
y[0].style.display = "none";
}
}
body {
background-color: white;
text-align: center;
color: black;
font-family: Arial, Helvetica, sans-serif;
width: 800px;
height: 600px;
}

.blur {
display: none;
position: absolute;
width: 800px;
height: 600px;
background-color: rgba(44, 44, 27, 0.527);
filter: blur(8px);
z-index: 1;
}

.testo {
position: absolute;
top: 82%;
left: 25%;
right: 25%;
z-index: 1;
}

.overlay {
position: absolute;
display: none;
width: 35%;
height: 42%;
top: 28%;
left: 25%;
right: 25%;
bottom: 20%;
background-color: #ffb87d;
z-index: 2;
cursor: pointer;
}

.button {
background-color: rgb(255, 127, 80);
padding: 24px;
color: rgb(255, 255, 255);
border-radius: 15px 15px;
}

.tocco {
display: block;
border: solid 4px;
position: absolute;
width: 800px;
height: 600px;
z-index: 2;
}
<!DOCTYPE html>
<html>

<head>

<title>Page Title</title>

</head>

<body>

<div class="tocco">
<div class="testo">
<H1> Hello world! </H1>
</div>
<!-- testo -->
<H3> tocco </H3>
<div>
<button class='button' onclick='on()'> Lancia </button>
</div>
<div class="overlay">
<p> Numero primo </p>
</div>
<!-- overlay -->
</div>
<!-- tocco -->
<div class="blur">
</div>

</body>

</html>

最佳答案

所以我所做的是给“Hello World”一个 id,当你点击按钮时它会模糊。如果您点击第二次,它将恢复正常。

function on() {
var x = document.getElementsByClassName("overlay");
var y = document.getElementsByClassName("blur");
if ((x[0].style.display === "none") && (y[0].style.display === "none")) {
x[0].style.display = "block";
y[0].style.display = "block";
document.getElementById("test").style.filter= "blur(8px)";

} else {
x[0].style.display = "none";
y[0].style.display = "none";
document.getElementById("test").style.filter= "blur(0px)";
}
}
body {
background-color: white;
text-align: center;
color: black;
font-family: Arial, Helvetica, sans-serif;
width: 800px;
height: 600px;
}

.blur {
display: none;
position: absolute;
width: 800px;
height: 600px;
background-color: rgba(44, 44, 27, 0.527);
filter: blur(8px);
z-index: 1;
}

.testo {
position: absolute;
top: 82%;
left: 25%;
right: 25%;
z-index: 1;
}

.overlay {
position: absolute;
display: none;
width: 35%;
height: 42%;
top: 28%;
left: 25%;
right: 25%;
bottom: 20%;
background-color: #ffb87d;
z-index: 2;
cursor: pointer;
}

.button {
background-color: rgb(255, 127, 80);
padding: 24px;
color: rgb(255, 255, 255);
border-radius: 15px 15px;
}

.tocco {
display: block;
border: solid 4px;
position: absolute;
width: 800px;
height: 600px;
z-index: 2;
}
<!DOCTYPE html>
<html>

<head>

<title>Page Title</title>

</head>

<body>

<div class="tocco">
<div class="testo">
<H1 id="test"> Hello world! </H1>
</div>
<!-- testo -->
<H3> tocco </H3>
<div>
<button class='button' onclick='on()'> Lancia </button>
</div>
<div class="overlay">
<p> Numero primo </p>
</div>
<!-- overlay -->
</div>
<!-- tocco -->
<div class="blur">
</div>

</body>

</html>

关于javascript - 在下面的所有 div 上使用 css 模糊效果,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/56662275/

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