vue 点击弹窗以外的其他区域可以关闭弹窗 ​

mounted () {
    let _this = this
    document.addEventListener('mouseup', (e) => {
        let tree = this.$refs.treeWrap
        if (tree) {
          if (!tree.contains(e.target)) {
            this.isShowTree = false
          }
        }
    })      
}

import Clickoutside from 'element-ui/src/utils/clickoutside'

export default {
    directives: { Clickoutside },
    methods: { 
        handleClose() {
            ...
        },
    }
}