Mozilla Developerhttps://developer.mozilla.org//setPropertyCSSStyleDeclaration: setProperty() method The CSSStyleDeclaration.setProperty() method interface sets a new value for a property on a CSS style declaration object. A string representing the CSS property name 标记:CSSStyleDeclaration.setPropertyCascading Style SheetsCssstyledeclaration Mdn更多内容请查看https://developer.mozilla.org/en-US/docs/Web/API/CSSStyleDeclaration/setProperty