如何将CSS类添加到页面< head>与jQuery的? [英] How can I add a CSS class to a page <head> with jquery?
问题描述
我想使用jquery将新的CSS类附加到文档的头脚本中，以更改该页面上的元素.
I want to use jquery to append a new CSS class to the head script of a document to change an element on that page.
使用类似这样的东西应该很简单:
It should be simple by using something like this:
var myhex = #e6399b;
$("<style type='text/css'> #someid { color:myhex; } </style>").appendTo("head");
我已经创建了一个 FIDDLE 进行测试，但无法使其正常工作.我认为在HTML代码中间使用JS变量的语法确实非常简单-我尝试了'+myhex+'和+myhex+，但老实说我在这一点上是在猜测.
I've created a FIDDLE to test with, but I can't get it to work. I think it's something really simple with the syntax of having a JS variable in the middle of HTML code - I tried '+myhex+' and +myhex+ but to be honest I was guessing at this point.
注释:
- 我需要通过变量来执行此操作，因为变量的内容经常更改.
- 我意识到直接的答案是使用.css()"，但是在这种情况下我无法使用它，因为我正在向jquery对话框中的元素添加样式.唯一的方法是通过jquery的
dialogClass命令(即，您必须通过类"而不是通过.css()来设置样式.
- I need to do it via a variable because the contents of the variable changes often.
- I realise the immediate answer is "use .css()" but in this scenario I can't use it because I'm adding a style to an element inside a jquery dialog. The only way of doing so is via jquery's
dialogClasscommand (i.e. you have to set up the style via a 'class', rather than via.css().
感谢您提供的任何帮助.
Thanks for any help you can give.
推荐答案
您需要用引号引起来，并将变量添加到包含(+)的字符串中:
You need to quote strings, and add variables to strings with concentanation (+ sign) :
var myhex = '#e6399b';
$("<style type='text/css'> #someid { color:"+myhex+"; } </style>").appendTo("head");
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