问题描述
是否可以使用Javascript或jQuery即时创建完整的媒体查询规则?
我使用了大量媒体查询来定位广义视口使用内联CSS,导入和链接文件的特定设备/屏幕:
@media屏幕和(min-width:400px){。 ..}
@import url(foo.css)(min-width:400px);
< link rel =stylesheettype =text / cssmedia =screen and(min-width:400px)href =foo.css/>
我可以使用jQuery添加/删除类:
$(foobar)click(function(){
$(h1,h2,h3)。addClass(blue);
$(div)。addClass(important);
$('#snafu')。removeClass('highlight');
}
我也看看 document.stylesheets
和看似古老和浏览器特定:
document.styleSheets [0] .insertRule(p {font-size:但是我找不到任何程序生成的引用:
p>
@media screen and(min-width:400px)
您可以直接更新现有< style>
元素(或创建一个) textContent
以包含规则,
document.querySelector('style').textContent + =
@media screen and -width:400px){div {color:red;}}
Is it possible to create full media query rules on the fly using Javascript or jQuery?
I've used numerous media queries to target generalised viewports and specific devices/screens using inline CSS, imports and linked files:
@media screen and (min-width:400px) { ... }
@import url(foo.css) (min-width:400px);
<link rel="stylesheet" type="text/css" media="screen and (min-width: 400px)" href="foo.css" />
I can add/remove classes using jQuery:
$("foobar").click(function(){
$("h1,h2,h3").addClass("blue");
$("div").addClass("important");
$('#snafu').removeClass('highlight');
});
I've also look at document.stylesheets
and the seemingly archaic and browser-specific:
document.styleSheets[0].insertRule("p{font-size: 20px;}", 0)
But I can't find any reference to programatically generating:
@media screen and (min-width:400px)
from javascript directly or in any form.
You can just update an existing <style>
element (or create one) textContent
to contain the rule, which will make it effective in the given context.
document.querySelector('style').textContent +=
"@media screen and (min-width:400px) { div { color: red; }}"
这篇关于使用javascript或jQuery生成CSS媒体查询的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!