jQuery的原因。如果不支持css, css就不会应用属性，如何检查属性?

I'm a bit confused. I expected from $.css() method to dumbly add a css property to an element no matter what. You know, just like in Chrome Dev tools, when you apply any css property to an element and it simply appears in HTML. But apparently it somehow checks if it supported. For example, if you run this command:I'm a bit confused. I expected from $.css() met