问题 While using Tailwind with utility-first approach to css, I often find the need to bind multiple classes to a single variable. For instance, to style an input form, I need to add border-red , color-red , etc if there is an error. Is there a nice and elegant way to express this in Vue instead of writing v-bind:class="{ 'border-red': error, 'text-red': error } ? 回答1: You can combine both classes into the same property: :class="{ 'border-red text-red': error }" 来源: https://stackoverflow.com