input框限制只能输入中文

const input = document.querySelector('input[type="text"]')
 const clearText = target => {
     const {
         value
     } = target
     target.value = value.replace(/[^\u4e00-\u9fa5]/g, '')
 }
 input.onfocus = ({target}) => {
     clearText(target)
 }
 input.onkeyup = ({target}) => {
     clearText(target)
 }
 input.onblur = ({target}) => {
     clearText(target)
 }
 input.oninput = ({target}) => {
     clearText(target)
 }