2014年6月3日 · The CSS solution is better for 2 reasons: CSS is loaded alongside the HTML, whereas JavaScript is loaded after the page itself has loaded. For things like a hover this isn't a huge issue, but if you're directly setting static styles you'll notice a delay between the content loading and the JavaScript running. It's common for users to disable JavaScript. With JavaScript disabled, your mouseover ...

2019年2月1日 · For example, if I want to update a CSS value at 60fps, would it be faster to do something like setCSS(i * 10 + 'px') in JS or something like in cssproperty: calc(10px * var(--i))?

2013年10月4日 · Your styling should be done using CSS wherever possible. Have different classes setup according to your needs, then add or remove classes when absolutely necessary with JS. One thing to keep in mind is that changing styling via JS is a one-time change. Elements added dynamically VIA Ajax won't inherit the styling changes automatically.

Just use innerWidth instead and you will see they share the same value. As soon as you reach 700px and lower you will see the text 700px using a css media query and a background change with js. Resize the demo in full page view.

To add to Mechlar's (correct) answer: JavaScript is an interpreted language and the JS engine of the browser has to parse and execute every instruction during run-time (I know there exist JS compilers, like V8 (used in Chrome), but the principle remains the same). On the other hand, browsers can implement CSS transitions natively, e.g. in C/C++ or …

There are times when I have a choice between using a CSS element:hover or JavaScript onmouseover to control the appearance of html elements on a page. Consider the following scenario where a div w...

2012年6月25日 · I'm working on a webapp (will only be running in Chrome 19+) that is currently built with CSS3 transitions. More specifically, I'm using Jquery Transit to fire the CSS3 animations with Jquery itsel...

2013年4月14日 · JavaScript is more dynamic than CSS. But how is JavaScript more dynamic than CSS? How does JavaScript coding work in a better way than CSS?

There seems little point of rewriting the same logic in javascript, having a new class for every new size. On top of this, media queries allow you to target CSS as different media types such as print, or if you want to use height-based media queries or target retina displays you can do this without having to add new classes.

2008年12月11日 · In JavaScript, the "===" operator should be used for strict equality comparison, while "==" is used for abstract equality comparison.