element-ui中dialog弹窗关闭按钮失效的解决

<el-dialog title="修改库存" :visible.sync="kcDialog" @close="kcDialog = false">
...
</el-dialog>

<script
 src="https://code.jquery./jquery-3.1.0.js"
 integrity="sha256-slogkvB1K3VOkzAI8QITxV3VzpOnkeNVsKvtkYLMjfk="
 crossorigin="anonymous">
</script>

module.exports = {
 entry: [],
 externals: {
   jquery: 'jQuery'
  },
  output: {...}
}