Javascript 带有变量和多个值的 jQuery .css() 函数
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jQuery .css() function with variables and multiple values
提问by technopeasant
Weird little snafu. I'm using jQuery's .css()
method to change the size of text (long story; no, I can't use media queries) using a variable and I need to add em
to it. I'm not sure what the syntax is because there are multiple values for the CSS change.
奇怪的小混混。我正在使用 jQuery 的.css()
方法来使用变量更改文本的大小(长话短说;不,我不能使用媒体查询),我需要添加em
到它。我不确定语法是什么,因为 CSS 更改有多个值。
To illustrate:
为了显示:
This works perfectly. It adds em
to the calculated value of victore
:
这完美地工作。它增加em
了 的计算值victore
:
$('h1').css('font-size', victore + 'em');
This doesn't:
这不会:
$('h1').css({
'font-size':victore + 'em',
'line-height':vignelli + 'em';
});
The em
needs quotes... but so does the value. Wrapping it in parens didn't work
在em
需要引号...但这样做的价值。将它包装在括号中不起作用
回答by James Montagne
You shouldn't have the quotes around the whole thing:
你不应该在整件事上加引号:
$('h1').css({
'font-size': victore + "em",
'color':'red'
});
回答by Phil Klein
The font-size value is required to be a string, but that string can be the result of an expression, in your case victore + 'em'
should result in the appropriate string.
font-size 值必须是一个字符串,但该字符串可以是表达式的结果,在您的情况下victore + 'em'
应该产生适当的字符串。
$('h1').css({
'font-size': victore + 'em',
'color': 'red'
});