I would like to write css or some thing that it will make font-family dynamic like on user side if user has Helvetica text available then font-family will be Helvetica if not then font-family will be Arial, How to do this?
我想编写css或者某些东西，如果用户有Helvetica文本可以使字体系列像用户那样动态，那么font-family将是Helvetica，如果没有那么font-family将是Arial，怎么做？
Thanks in advance
提前致谢
1 个解决方案
#1
3
The typical way is to add them all (most specific to most generic) as a comma delimited list in your style rule. If the first one is unavailable, the second is used, and if not that one, the third, etc.
典型的方法是将它们全部（最特定于大多数通用）添加为样式规则中的逗号分隔列表。如果第一个不可用，则使用第二个，如果不是，则使用第三个，等等。
font-family: Helvetica, Arial, sans-serif;
#1
3
The typical way is to add them all (most specific to most generic) as a comma delimited list in your style rule. If the first one is unavailable, the second is used, and if not that one, the third, etc.
典型的方法是将它们全部（最特定于大多数通用）添加为样式规则中的逗号分隔列表。如果第一个不可用，则使用第二个，如果不是，则使用第三个，等等。
font-family: Helvetica, Arial, sans-serif;