30秒学会 JavaScript 片段 – Set style for element

Sets the value of a CSS rule for the specified HTML element.

• Use HTMLElement.style to set the value of the CSS rule for the specified element to val.

代码实现

const setStyle = (el, rule, val) => (el.style[rule] = val);

setStyle(document.querySelector('p'), 'font-size', '20px');
// The first <p> element on the page will have a font-size of 20px

翻译自：https://www.30secondsofcode.org/js/s/set-style-for-html-element