如何在Vue JS和Tailwind CSS中单击按钮

Question

我试图做一个黑暗模式按钮切换，我想要做的第一步是一个图标，当我点击按钮，但我的代码没有运行。这是我的密码：

<button href="" class="px-2 mb-1" @click="isDark = !isDark">
        <img src="../Assets/Icons/moon.svg" alt="" class="w-6 h-5 hidden lg:flex md:flex" v-if="isDark = true">
        <img src="../Assets/Icons/sun.svg" alt="" class="w-6 h-5 hidden lg:flex md:flex" v-if="isDark = false">
        </button>
<script>
export default {
  setup(){
    const showSidebar = ref(false)
    const stayInDropdown = ref(true)
    const isDark = ref(true)
    return{
      showSidebar,
      stayInDropdown,
      isDark,
    }
  },
</script>

Answer 1

v-if="isDark = true"意味着将true分配给isDark而不是比较它们，比较应该类似于v-if="isDark === true"，但是您可以只做v-if='isDark'

 <img v-if='isDark' src="../Assets/Icons/moon.svg" alt="" class="w-6 h-5 hidden lg:flex md:flex" >
 <img v-else src="../Assets/Icons/sun.svg" alt="" class="w-6 h-5 hidden lg:flex md:flex" >