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19 - 切换焦点指令 #1760

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<script setup lang='ts'> import { ref } from "vue" const state = ref(false) /** * Implement the custom directive * Make sure the input element focuses/blurs when the 'state' is toggled * */ const VFocus = { updated: (el, binding) => { binding.value ? el.focus() : el.blur() } } setInterval(() => { state.value = !state.value }, 2000) </script>

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