vue 点击某个div以外的区域，将这个div隐藏

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<template>   <div class="header_sty" id="header_sty">     <div v-if="mobilMenu">test</div>   </div> </template>   <script>  data(){   return{     mobilMenu :false,   }  },  created () {    window.addEventListener('click', this.handleClickOutside, true)  },    destroyed () {      if (process.browser) {        window.removeEventListener('click', this.handleClickOutside, true)      }   },    methods: {    handleClickOutside (event) {       const divToHide = document.getElementById('header_sty')       if (divToHide && !divToHide.contains(event.target)) {         this.mobilMenu = false       }     },  } </script>