vue Element 修改 tree 选中样式并设置默认选中值

<template>
	<el-tree 
	  ref="Tree"
	  :data="taskTree"
	  node-key="id"
	 />
</template>
<script>
export default {
  data() {
    return {
      taskTree:[],
    };
  },
  methods: {
  	//设置默认选中值
    setDefault(item) {
      this.$nextTick(() => {
      		//item.id绑定的node-key值
          this.$refs.Tree.setCurrentKey(item.id);
        });
 
    },
  }
};
</script>

<style lang="scss">
 //使用的地方  不要加scoped  
 .el-tree-node.is-current > .el-tree-node__content {
    color: #21bb9e !important;
  }
</style>