Javascript 背景图像样式在HTML标题中不起作用
我试图在按下按钮时更改css类的“背景图像” JQuery:Javascript 背景图像样式在HTML标题中不起作用,javascript,jquery,html,css,Javascript,Jquery,Html,Css,我试图在按下按钮时更改css类的“背景图像” JQuery: $(function() { $('button').on('click', function() { $('.masthead2').css('background-image', 'url("../img/whiteheader.png")'); }); }); CSS: 当我按下按钮时,CSS样式中的“背景图像:”被删除。然后HTML将从以下内容更改: <header class="mas
$(function() {
$('button').on('click', function() {
$('.masthead2').css('background-image', 'url("../img/whiteheader.png")');
});
});
CSS:
当我按下按钮时,CSS样式中的“背景图像:”被删除。然后HTML将从以下内容更改:
<header class="masthead2">
为此:
<header class="masthead2" style='background-image: url("../img/whiteheader.png");'
图像的路径可能错误。如果它在css中,则路径相对于css文件,但在html中并不表示相同的位置。尝试图像的绝对路径。 e、 g
图像的路径可能错误。如果它在css中,则路径相对于css文件,但在html中并不表示相同的位置。尝试图像的绝对路径。 e、 g
我已经检查,完整的代码,它在我的工作结束,请检查您的图像网址,如果图像存在。 代码如下:-
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Animation</title>
<link rel="stylesheet" href="style.css" />
<style>
.masthead2 {
position: relative;
width: 100%;
height: auto;
min-height: 35rem;
padding: 15rem 0;
background-image: url("https://lh3.googleusercontent.com/proxy/ogwfaF0iwa05OnTNQFyD0rZ384sAN74p5xwJE6qfJmrEFcmgxlXo4zg22lrlaLcaS_hp9pFCu8s8QZ-GgDy37DxWVOHpq2B4IV35vb4wgHBWfJiYqI_AVARVMaguPane4Raedg=w530-h212-p-rw");
background-position: center;
background-repeat: no-repeat;
background-attachment: scroll;
background-size: cover;
}
</style>
</head>
<body>
<header class="masthead2"></header>
<button>Submit</button>
</body>
<script
src="https://code.jquery.com/jquery-3.4.1.js"
integrity="sha256-WpOohJOqMqqyKL9FccASB9O0KwACQJpFTUBLTYOVvVU="
crossorigin="anonymous"></script>
<script>
$(function() {
$('button').on('click', function() {
$('.masthead2').css('background-image', 'url("https://upload.wikimedia.org/wikipedia/en/thumb/6/63/IMG_%28business%29.svg/1200px-IMG_%28business%29.svg.png")');
});
});
</script>
</html>
动画
.桅顶2{
位置:相对位置;
宽度:100%;
高度:自动;
最小高度:35雷姆;
填充:150;
背景图像:url(“https://lh3.googleusercontent.com/proxy/ogwfaF0iwa05OnTNQFyD0rZ384sAN74p5xwJE6qfJmrEFcmgxlXo4zg22lrlaLcaS_hp9pFCu8s8QZ-GgDy37DxWVOHpq2B4IV35vb4wgHBWfJiYqI_AVARVMaguPane4Raedg=w530-h212-p-rw”);
背景位置:中心;
背景重复:无重复;
背景附件:滚动条;
背景尺寸:封面;
}
提交
$(函数(){
$('button')。在('click',function()上{
$('.masthead2').css('background-image','url('https://upload.wikimedia.org/wikipedia/en/thumb/6/63/IMG_%28business%29.svg/1200px-IMG_%28business%29.svg.png”);
});
});
我已经检查了,完整的代码,它在我这边工作,请检查您的图像url,如果图像存在。
代码如下:-
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Animation</title>
<link rel="stylesheet" href="style.css" />
<style>
.masthead2 {
position: relative;
width: 100%;
height: auto;
min-height: 35rem;
padding: 15rem 0;
background-image: url("https://lh3.googleusercontent.com/proxy/ogwfaF0iwa05OnTNQFyD0rZ384sAN74p5xwJE6qfJmrEFcmgxlXo4zg22lrlaLcaS_hp9pFCu8s8QZ-GgDy37DxWVOHpq2B4IV35vb4wgHBWfJiYqI_AVARVMaguPane4Raedg=w530-h212-p-rw");
background-position: center;
background-repeat: no-repeat;
background-attachment: scroll;
background-size: cover;
}
</style>
</head>
<body>
<header class="masthead2"></header>
<button>Submit</button>
</body>
<script
src="https://code.jquery.com/jquery-3.4.1.js"
integrity="sha256-WpOohJOqMqqyKL9FccASB9O0KwACQJpFTUBLTYOVvVU="
crossorigin="anonymous"></script>
<script>
$(function() {
$('button').on('click', function() {
$('.masthead2').css('background-image', 'url("https://upload.wikimedia.org/wikipedia/en/thumb/6/63/IMG_%28business%29.svg/1200px-IMG_%28business%29.svg.png")');
});
});
</script>
</html>
动画
.桅顶2{
位置:相对位置;
宽度:100%;
高度:自动;
最小高度:35雷姆;
填充:150;
背景图像:url(“https://lh3.googleusercontent.com/proxy/ogwfaF0iwa05OnTNQFyD0rZ384sAN74p5xwJE6qfJmrEFcmgxlXo4zg22lrlaLcaS_hp9pFCu8s8QZ-GgDy37DxWVOHpq2B4IV35vb4wgHBWfJiYqI_AVARVMaguPane4Raedg=w530-h212-p-rw”);
背景位置:中心;
背景重复:无重复;
背景附件:滚动条;
背景尺寸:封面;
}
提交
$(函数(){
$('button')。在('click',function()上{
$('.masthead2').css('background-image','url('https://upload.wikimedia.org/wikipedia/en/thumb/6/63/IMG_%28business%29.svg/1200px-IMG_%28business%29.svg.png”);
});
});
你检查控制台了吗?@Adrift是的,没有显示任何东西:/n你检查控制台了吗?@Adrift是的,没有显示任何东西:/n是的,你是对的。更改为url(“image/whiteheader.png”)。非常感谢。或者试试这个$('.masthead2').css('background-image','url(“img/whiteheader.png”);是的,你说得对。更改为url(“image/whiteheader.png”)。非常感谢。或者试试这个$('.masthead2').css('background-image','url(“img/whiteheader.png”);是的,这是图像url。我只需要删除url中的“.”。谢谢你的帮助非常感谢。是的,这是图片的网址。我只需要删除url中的“.”。谢谢你的帮助,非常感谢。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Animation</title>
<link rel="stylesheet" href="style.css" />
<style>
.masthead2 {
position: relative;
width: 100%;
height: auto;
min-height: 35rem;
padding: 15rem 0;
background-image: url("https://lh3.googleusercontent.com/proxy/ogwfaF0iwa05OnTNQFyD0rZ384sAN74p5xwJE6qfJmrEFcmgxlXo4zg22lrlaLcaS_hp9pFCu8s8QZ-GgDy37DxWVOHpq2B4IV35vb4wgHBWfJiYqI_AVARVMaguPane4Raedg=w530-h212-p-rw");
background-position: center;
background-repeat: no-repeat;
background-attachment: scroll;
background-size: cover;
}
</style>
</head>
<body>
<header class="masthead2"></header>
<button>Submit</button>
</body>
<script
src="https://code.jquery.com/jquery-3.4.1.js"
integrity="sha256-WpOohJOqMqqyKL9FccASB9O0KwACQJpFTUBLTYOVvVU="
crossorigin="anonymous"></script>
<script>
$(function() {
$('button').on('click', function() {
$('.masthead2').css('background-image', 'url("https://upload.wikimedia.org/wikipedia/en/thumb/6/63/IMG_%28business%29.svg/1200px-IMG_%28business%29.svg.png")');
});
});
</script>
</html>